subject:(Sugarcane bagasse)

Addis Ababa University

1. HAILU, BIRUK. Bagasse ash as a cement replacing material .

Degree: 2012, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/4356

► Sugarcane bagasse ash is a byproduct of the sugar factories found after burning sugarcane bagasse which itself is found after the extraction of all economical… (more)

▼ Sugarcane bagasse ash is a byproduct of the sugar factories found after burning sugarcane bagasse which itself is found after the extraction of all economical sugar from sugarcane. The disposal of this material is already causing environmental problems around the sugar factories. Due to the boost of the construction activity in the country, a huge shortage is created in most of the construction materials especially cement, resulting in steady increase of price. This research was therefore, conducted to examine the potential of bagasse ash as a cement replacing material. Initially, bagasse ash samples were collected from Wonji sugar factory and its chemical properties were investigated. The bagasse ash were then ground until the particles passing the 63 μm reaches about 85%, which is similar to that of ordinary Portland cement. Ordinary Portland cement and Portland pozzolana cement were replaced by ground bagasse ash. Normal consistency and setting time of the pastes containing ordinary Portland cement and bagasse ash from 5% to 30% replacement were investigated. The compressive strength of mortars containing ordinary Portland cement and Portland pozzolana cement with bagasse ash from 5% to 30% replacements were also investigated. Four different concrete mixes with the bagasse ash replacing 0%, 5%, 15% and 25% of the ordinary Portland cement were prepared for 35MPa concrete with water to cement ratio of 0.55 and 350kg/m3cement content. The properties of these mixes have then been assessed both at the fresh and hardened state. The results of the mortar work have shown that, up to 10% replacement of the ordinary Portland cement by bagasse ash achieved a higher compressive strength at all test ages i.e. 3, 7 and 28 days, whereas the 15% replacement of the cement by bagasse ash in the concrete have shown a slightly lower compressive strength at 56 days. The water penetration depth was found to increase as the bagasse ash content increases and all the blended concretes showed a higher maximum penetration depth than the control concrete. It can therefore be concluded that 10% replacement of cement by bagasse ash results in a similar concrete properties and higher replacement could also be used with a slight reduction in the performance of the concrete. Advisors/Committee Members: PROF. DR. - ING. ABEBE DINKU (advisor).

Subjects/Keywords: Sugarcane bagasse ash; cement replacing material

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

HAILU, B. (2012). Bagasse ash as a cement replacing material . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/4356

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

HAILU, BIRUK. “Bagasse ash as a cement replacing material .” 2012. Thesis, Addis Ababa University. Accessed January 26, 2021. http://etd.aau.edu.et/dspace/handle/123456789/4356.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

HAILU, BIRUK. “Bagasse ash as a cement replacing material .” 2012. Web. 26 Jan 2021.

Vancouver:

HAILU B. Bagasse ash as a cement replacing material . [Internet] [Thesis]. Addis Ababa University; 2012. [cited 2021 Jan 26]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/4356.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

HAILU B. Bagasse ash as a cement replacing material . [Thesis]. Addis Ababa University; 2012. Available from: http://etd.aau.edu.et/dspace/handle/123456789/4356

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Addis Ababa University

2. Degefu, Natanim. Physico-chemical Characterization of Native and Microcrystalline Cellulose from Sugarcane Bagasse and Evaluation of the Microcrystalline Cellulose as Directly Compressible Tablet Excipient .

Degree: 2019, Addis Ababa University

URL: http://etd.aau.edu.et/handle/123456789/21145

► Sugarcane bagasse (SCB) is an abundant agricultural lignocellulose byproduct. In this study, cellulose was extracted from SCB by two methods, by acid treatment with or… (more)

▼ Sugarcane bagasse (SCB) is an abundant agricultural lignocellulose byproduct. In this study, cellulose was extracted from SCB by two methods, by acid treatment with or without dewaxing. Microcrystalline cellulose (MCC) was prepared from extracted cellulose by HCl hydrolysis with or without mechanical shearing either by oven or spray drying. Physico-chemical characteristics of cellulose and MCC were assessed. Mechanical properties of plain MCC tablets and dilution capacities of MCC, using paracetamol as a model drug, were also investigated. Cellulose yields on the dry weight basis were found to be 42.8% ± 1.10 and 43.5% ± 0.5 from non-dewaxed and dewaxed SCB, respectively. Whereas, dewaxed SCB cellulose (DSCBC) provided better yield of MCC (DSCB-MCCI) (81.0% ± 0.57) than non-dewaxed SCB cellulose (SCBC) yield of MCC (SCB-MCCI) (70.0% ± 0.90). The degree of polymerization (DP) of SCBC and DSCBC were 580.56 and 592.75, respectively, while DP of MCC preparations ranged from 230.10 - 256.14. Scanning electron microscopy of DSCBC showed characteristic morphology that was fibrous while SEM of DSCB-MCCI revealed it was rod in shape. Both dewaxed cellulose and MCC exhibited better heat stability than non-dewaxed products. The degree of crystallinity values of dewaxed cellulose (77.34%) and MCC (79.56 - 83.00%) were higher than non-dewaxed cellulose (74.50%) and MCC (78.11 - 81.93%). In contrast to non-dewaxed MCC preparation, ether-soluble substances of dewaxed MCC preparations were within the acceptable range. Except MCC prepared without mechanical shearing, all exhibited a monomodal normal particle size distribution. Mechanically sheared dewaxed MCC and Avicel PH-101 had comparable density and flow property. Both plain and paracetamol loaded tablets of spray dried MCC preparations showed significantly higher crushing and tensile strength than respective oven dried MCC preparations. All MCC preparations from SCB showed lower crushing and tensile strengths than Avicel PH-101. The disintegration times and dissolution profiles of all paracetamol loaded tablets prepared from dewaxed SCB-MCC and Avicel PH-101 were comparable and within the acceptable range. However, tablets of non-dewaxed SCB-MCC preparations had prolonged disintegration times and retarded in-vitro dissolution. Therefore, dewaxed SCB could be a promising locally available potential source of cellulose and MCC. Advisors/Committee Members: Prof.Gebre-Mariam, Tsige (advisor), Dr.Belete, Anteneh (advisor).

Subjects/Keywords: Cellulose; Dilution capacity; Microcrystalline Cellulose; Sugarcane Bagasse

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APA (6^th Edition):

Degefu, N. (2019). Physico-chemical Characterization of Native and Microcrystalline Cellulose from Sugarcane Bagasse and Evaluation of the Microcrystalline Cellulose as Directly Compressible Tablet Excipient . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/handle/123456789/21145

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Degefu, Natanim. “Physico-chemical Characterization of Native and Microcrystalline Cellulose from Sugarcane Bagasse and Evaluation of the Microcrystalline Cellulose as Directly Compressible Tablet Excipient .” 2019. Thesis, Addis Ababa University. Accessed January 26, 2021. http://etd.aau.edu.et/handle/123456789/21145.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Degefu, Natanim. “Physico-chemical Characterization of Native and Microcrystalline Cellulose from Sugarcane Bagasse and Evaluation of the Microcrystalline Cellulose as Directly Compressible Tablet Excipient .” 2019. Web. 26 Jan 2021.

Vancouver:

Degefu N. Physico-chemical Characterization of Native and Microcrystalline Cellulose from Sugarcane Bagasse and Evaluation of the Microcrystalline Cellulose as Directly Compressible Tablet Excipient . [Internet] [Thesis]. Addis Ababa University; 2019. [cited 2021 Jan 26]. Available from: http://etd.aau.edu.et/handle/123456789/21145.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Degefu N. Physico-chemical Characterization of Native and Microcrystalline Cellulose from Sugarcane Bagasse and Evaluation of the Microcrystalline Cellulose as Directly Compressible Tablet Excipient . [Thesis]. Addis Ababa University; 2019. Available from: http://etd.aau.edu.et/handle/123456789/21145

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Bernardino, Marcia Andrade. Caracterização e aplicação da farinha do bagaço da cana-de-açúcar em bolo.

Degree: Mestrado, Ciências da Engenharia de Alimentos, 2011, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-104853/ ;

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O objetivo deste trabalho foi caracterizar a farinha do bagaço da cana-de-açúcar (FBCA) e avaliar o efeito de sua aplicação, como fonte de fibra insolúvel,… (more)

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O objetivo deste trabalho foi caracterizar a farinha do bagaço da cana-de-açúcar (FBCA) e avaliar o efeito de sua aplicação, como fonte de fibra insolúvel, em bolo. A FBCA foi caracterizada com relação a sua composição química (teor de umidade, cinzas, proteínas, carboidratos, fibras solúveis, fibras em detergente ácido e neutro e lipídeos), atividade de água (Aw), composição de minerais pela técnica de Espectrometria de Fluorescência de Raios-X (TXRF), determinação do tamanho e distribuição das partículas, avaliação da cor instrumental e contagem de bolores e leveduras e de coliformes totais. A FBCA foi aplicada em bolo tipo cupcake nas proporções de 3 e 6%. Os bolos recém-preparados foram avaliados com relação à umidade, atividade de água (Aw), densidade, cor instrumental e pH. Os bolos foram estocados durante 42 dias e em 5 pontos deste período foram avaliados com relação a umidade, Aw, perfil de textura (parâmetros dureza, elasticidade e coesão), contagem de bolores e leveduras e aceitação sensorial (atributos aparência, sabor, aroma, textura e aceitação global). Todas as análises foram realizadas também em uma amostra controle, preparada sem a adição de FBCA, para efeito de comparação. A FBCA demonstrou ser excelente fonte de fibra insolúvel, com 81,92% entre celulose, lignina e hemicelulose, bem como de minerais como o ferro, manganês e cromo. Todavia é uma fonte pobre de fibra solúvel, proteína, carboidratos e lipídeos. Em torno de 60% das partículas da FBCA possuem tamanho inferior a 80µm. A FBCA apresentou contagem alta de bolores e leveduras e cor tendendo para o amarelo e vermelho. Os bolos apresentaram em torno de 15% de umidade e Aw na faixa intermediária. Bolos com FBCA foram ligeiramente mais úmidos, escuros e densos que o controle. Porém, foram menos elásticos e tão coesos e duros quanto. Os bolos adicionados de 3% de FBCA apresentaram a mesma aceitação que o produto tradicional, com a vantagem do maior valor nutricional em função da presença das fibras e dos minerais oriundos da FBCA.

The aim of this study was to characterize the flour from sugarcane bagasse (FSB) and to evaluate the effect of its application as a source of insoluble fiber in cake. The FSB was characterized in respect to the chemical composition (moisture content, ash, proteins, carbohydrates, soluble fiber, fiber in acid and neutral detergent, cellulose, hemicellulose, lignin and lipids), water activity (Aw), mineral composition by Fluorescence spectrometry technique X-ray (TXRF), size and distribution of particles, evaluation of the instrumental color and counts of molds and total coliforms. The FSB was applied in cupcakes, in proportions of 3% and 6%. The freshly prepared cakes were evaluated in respect to moisture content, water activity (Aw), density, pH and instrumental color. The cakes were stored for 42 days and during this period were evaluated for moisture content, Aw, instrumental texture (hardness, elasticity and cohesion), counts of molds and sensory acceptance (appearance, taste, flavor, texture and overall…

Advisors/Committee Members: Fávaro-Trindade, Carmen Silvia.

Subjects/Keywords: Bagaço da cana-de-açúcar; Bolo; Cake; Fiber; Fibra; Sugarcane bagasse

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bernardino, M. A. (2011). Caracterização e aplicação da farinha do bagaço da cana-de-açúcar em bolo. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-104853/ ;

Chicago Manual of Style (16^th Edition):

Bernardino, Marcia Andrade. “Caracterização e aplicação da farinha do bagaço da cana-de-açúcar em bolo.” 2011. Masters Thesis, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-104853/ ;.

MLA Handbook (7^th Edition):

Bernardino, Marcia Andrade. “Caracterização e aplicação da farinha do bagaço da cana-de-açúcar em bolo.” 2011. Web. 26 Jan 2021.

Vancouver:

Bernardino MA. Caracterização e aplicação da farinha do bagaço da cana-de-açúcar em bolo. [Internet] [Masters thesis]. University of São Paulo; 2011. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-104853/ ;.

Council of Science Editors:

Bernardino MA. Caracterização e aplicação da farinha do bagaço da cana-de-açúcar em bolo. [Masters Thesis]. University of São Paulo; 2011. Available from: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-104853/ ;

4. Ferraz, Flavio de Oliveira. Influência de diferentes métodos de destoxificação sobre a composição e fermentabilidade do hidrolisado de bagaço de cana-de-açucar à xilitol e etanol.

Degree: Mestrado, Microbiologia Aplicada, 2010, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/97/97132/tde-27092012-112943/ ;

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A fermentação de hidrolisados hemicelulósicos tem como principal dificuldade a presença de compostos inibidores ao metabolismo microbiano, derivados da degradação parcial da lignina, degradação dos… (more)

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A fermentação de hidrolisados hemicelulósicos tem como principal dificuldade a presença de compostos inibidores ao metabolismo microbiano, derivados da degradação parcial da lignina, degradação dos açúcares e liberação de radicais acetil durante a etapa de hidrólise dos materiais lignocelulósicos. O presente trabalho teve por objetivo avaliar a influência de diferentes tratamentos de destoxificação sobre a composição e fermentabilidade do hidrolisado hemicelulósico de bagaço de cana-de-açúcar na produção de etanol e xilitol. Foram avaliados os seguintes tratamentos: a) alteração de pH com óxido de cálcio e ácido fosfórico seguido de adsorção com carvão ativo; b) utilização de resinas de troca iônica (A-860, A-500PS e C-150 - Amberlite); e c) extração líquido-líquido com interface imobilizada em membrana de fibra oca (Membrana, Charlote, NC - USA), na qual a fase orgânica foi uma mistura de octanol e Alamina 336 e a fase aquosa foi o próprio hidrolisado. De acordo com os resultados, os tratamentos aplicados (a, b e c) promoveram uma redução na concentração de ácido acético de 46,74%, 64,15% e 44,71% e uma redução na absorbância relativa (A.R.) de 82,0%, 94,59% e 46,07%, respectivamente. Na fermentação dos hidrolisados tratados, pela levedura Candida guilliermondii FTI 20037, após 48h de fermentação, os resultados para o fator de rendimento foram de 0,57g/g, 0,42g/g e 0,33 g/g após os tratamentos a, b e c, respectivamente. Quanto à produtividade volumétrica, na mesma ordem dos tratamentos foram obtidos os seguintes resultados: 0,39 g.L-1.h-1, 0,20 g.L-1.h-1 e 0,16 g.L-1.h-1. Nas fermentações dos hidrolisados tratados (a) e (b) pela levedura Pichia stipitis IMH 43.2, visando a produção de etanol, após 48h os resultados do fator de rendimento foram 0,38 g/g e 0,23 g/g, respectivamente, enquanto a produtividade volumétrica foi de 0,09 g.L-1.h-1 para o tratamento (a) e para o tratamento (b). Para o tratamento (c) não se observou a produção de etanol nas condições de fermentação utilizadas. Considerando os resultados obtidos, sugere-se que, para as condições experimentais empregadas, o hidrolisado seja tratado por alteração de pH seguido de tratamento com carvão ativado, uma vez que este tratamento resultou nos melhores resultados para o fator de rendimento tanto na produção de xilitol quanto na produção de etanol.

The fermentation of hemicellulosic hydrolysates has as main difficult the presence of compounds derived from partial degradation of lignin, sugars and release of acetyl groups, which are inhibitors of microbial metabolism, during the hydrolysis process of lignocellulosic materials. This study aimed to evaluate the influence of different detoxification treatments on the composition and fermentability of the sugarcane bagasse hemicellulosic hydrolyzate in the production of xylitol and ethanol. The following treatments were evaluated: a) change of pH with calcium oxide and phosphoric acid followed by adsorption with activated charcoal, b) use of ion exchange resins (A-860, A-500 PS and C-150 - Amberlite) and c)…

Advisors/Committee Members: Silva, Silvio Silverio da.

Subjects/Keywords: Bagaço de cana-de-açúcar; Destoxificação; Detoxification; Hidrolisado; Hydrolyzate; Sugarcane bagasse

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ferraz, F. d. O. (2010). Influência de diferentes métodos de destoxificação sobre a composição e fermentabilidade do hidrolisado de bagaço de cana-de-açucar à xilitol e etanol. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/97/97132/tde-27092012-112943/ ;

Chicago Manual of Style (16^th Edition):

Ferraz, Flavio de Oliveira. “Influência de diferentes métodos de destoxificação sobre a composição e fermentabilidade do hidrolisado de bagaço de cana-de-açucar à xilitol e etanol.” 2010. Masters Thesis, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/97/97132/tde-27092012-112943/ ;.

MLA Handbook (7^th Edition):

Ferraz, Flavio de Oliveira. “Influência de diferentes métodos de destoxificação sobre a composição e fermentabilidade do hidrolisado de bagaço de cana-de-açucar à xilitol e etanol.” 2010. Web. 26 Jan 2021.

Vancouver:

Ferraz FdO. Influência de diferentes métodos de destoxificação sobre a composição e fermentabilidade do hidrolisado de bagaço de cana-de-açucar à xilitol e etanol. [Internet] [Masters thesis]. University of São Paulo; 2010. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/97/97132/tde-27092012-112943/ ;.

Council of Science Editors:

Ferraz FdO. Influência de diferentes métodos de destoxificação sobre a composição e fermentabilidade do hidrolisado de bagaço de cana-de-açucar à xilitol e etanol. [Masters Thesis]. University of São Paulo; 2010. Available from: http://www.teses.usp.br/teses/disponiveis/97/97132/tde-27092012-112943/ ;

Queensland University of Technology

5. Howard, Joshua M. Catalytic conversion of sugar manufacturing by-products to 5-(chloromethyl) furfural and 5-(hydroxymethyl) furural.

Degree: 2017, Queensland University of Technology

URL: https://eprints.qut.edu.au/107143/

This thesis is a contribution to the development of catalytic processes for the production of platform chemicals from agricultural residues. It examined catalytic processes for the production of chloromethylfurfural and hydroxymethylfurfural from sugar cane bagasse and molasses. These chemicals can be used for the production of fuels, pharmaceuticals and polymers.

Subjects/Keywords: Biomass; furanic; carbohydrate; catalyst; chloromethylfurfural; hydroxymethylfurfural; sugarcane; bagasse; molasses; lignocellulose

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Howard, J. M. (2017). Catalytic conversion of sugar manufacturing by-products to 5-(chloromethyl) furfural and 5-(hydroxymethyl) furural. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/107143/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Howard, Joshua M. “Catalytic conversion of sugar manufacturing by-products to 5-(chloromethyl) furfural and 5-(hydroxymethyl) furural.” 2017. Thesis, Queensland University of Technology. Accessed January 26, 2021. https://eprints.qut.edu.au/107143/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Howard, Joshua M. “Catalytic conversion of sugar manufacturing by-products to 5-(chloromethyl) furfural and 5-(hydroxymethyl) furural.” 2017. Web. 26 Jan 2021.

Vancouver:

Howard JM. Catalytic conversion of sugar manufacturing by-products to 5-(chloromethyl) furfural and 5-(hydroxymethyl) furural. [Internet] [Thesis]. Queensland University of Technology; 2017. [cited 2021 Jan 26]. Available from: https://eprints.qut.edu.au/107143/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Howard JM. Catalytic conversion of sugar manufacturing by-products to 5-(chloromethyl) furfural and 5-(hydroxymethyl) furural. [Thesis]. Queensland University of Technology; 2017. Available from: https://eprints.qut.edu.au/107143/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Durban University of Technology

6. Reddy, Karen. Evaluation of biohydrogen production potential of sugarcane bagasse using activated sludge in a dark fermentation process.

Degree: 2016, Durban University of Technology

URL: http://hdl.handle.net/10321/1753

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Submitted in fulfillment of the requirements Of the degree of Masters in applied science: Biotechnology, Durban University of Technology, Durban, South Africa, 2016.

Anaerobic dark… (more)

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Submitted in fulfillment of the requirements Of the degree of Masters in applied science: Biotechnology, Durban University of Technology, Durban, South Africa, 2016.

Anaerobic dark fermentation is an efficient biological process to produce hydrogen from waste material. In South Africa, this technology has not been explored adequately to extract energy from biological wastes. Within the KwaZulu Natal region of South Africa, the sugar industry is a prominent venture that produces mass quantities of sugarcane bagasse amongst other waste products. This by-product can be an ideal source of substrate for biohydrogen generation. In this study, sugarcane bagasse was used as the main substrate for biohydrogen production by anaerobic fermentation using sewage sludge as the inoculum. Different pre-treatment methods were employed to maximize the release of fermentable sugars from the lignocellulosic biomass. Among the different pre-treatment methods employed, the maximum sugar yield (294.4 mg/g) was achieved with 0.25% H2SO4 for 60 minutes at 121°C. Prior to inoculation, the sewage sludge was also subjected to thermal pre-treatment to eliminate methanogens. Thermal pre-treatment of inoculum sludge for 30 min was effective in eliminating methanogens. Fluorescence in situ hybridization was used to positively identify the hydrogen producing bacteria present before and after treatment. The pre-treated substrate and inoculum was integrated into a dark fermentation process to further optimize the effect of pH, substrate to biomass, iron and magnetite nanoparticles on hydrogen production. The maximum hydrogen production (1.2 mol/mol glucose) was achieved at a pH range of 5-6, a substrate to biomass ratio of 3.5, and iron and magnetite nanoparticle concentration of 200 mg/L. Microbial analysis using quantitative polymerase chain reaction has confirmed the dominance of Clostridium spp. in the reactor. The highest hydrogenase gene activity (number of copies of hydrogenase gene expression/ng DNA) was recorded in the reactor supplemented with magnetite nanoparticles with lowest being in the raw sludge. There was a direct positive correlation between the hydrogenase gene copy number and the hydrogen yield obtained at different reactor conditions. Scanning electron microscopy was a useful to visually analyse the interaction of microorganisms with activated sludge. This study highlights the significance of anaerobic microorganisms from waste sludge being able to utilize agricultural waste material to produce biohydrogen which could be further scaled up for continuous hydrogen production. In addition, statistical tools used to predict the possible sugar (Design of experiments) and hydrogen yields (Gompertz model) produced would be helpful in saving time during full-scale operation of biohydrogen producing reactors.

M

Advisors/Committee Members: Bux, Faizal, Kuttun Pillai, Sheena Kumari, Gupta, Sanjay Kumar.

Subjects/Keywords: Bagasse; Hydrogen – Biotechnology; Sugarcane products; Fermentation; Sewage – Purification – Activated sludge process

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APA (6^th Edition):

Reddy, K. (2016). Evaluation of biohydrogen production potential of sugarcane bagasse using activated sludge in a dark fermentation process. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/1753

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Reddy, Karen. “Evaluation of biohydrogen production potential of sugarcane bagasse using activated sludge in a dark fermentation process.” 2016. Thesis, Durban University of Technology. Accessed January 26, 2021. http://hdl.handle.net/10321/1753.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Reddy, Karen. “Evaluation of biohydrogen production potential of sugarcane bagasse using activated sludge in a dark fermentation process.” 2016. Web. 26 Jan 2021.

Vancouver:

Reddy K. Evaluation of biohydrogen production potential of sugarcane bagasse using activated sludge in a dark fermentation process. [Internet] [Thesis]. Durban University of Technology; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10321/1753.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Reddy K. Evaluation of biohydrogen production potential of sugarcane bagasse using activated sludge in a dark fermentation process. [Thesis]. Durban University of Technology; 2016. Available from: http://hdl.handle.net/10321/1753

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University

7. Velmurugan R. Ultrasound assisted pretreatment and hydrolysis for the production of ethanol from sugarcane bagasse;.

Degree: 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/15203

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The steady increase in energy consumption and the depletion of fossil fuels has reawakened the interest in developing alternative energy sources that can compensate the… (more)

Subjects/Keywords: Ultrasound; hydrolysis; ethanol; sugarcane bagasse (SCB); lignocellulosic; hydrolyzate; circular dichroism(CD)

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APA (6^th Edition):

R, V. (2014). Ultrasound assisted pretreatment and hydrolysis for the production of ethanol from sugarcane bagasse;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/15203

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

R, Velmurugan. “Ultrasound assisted pretreatment and hydrolysis for the production of ethanol from sugarcane bagasse;.” 2014. Thesis, Anna University. Accessed January 26, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/15203.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

R, Velmurugan. “Ultrasound assisted pretreatment and hydrolysis for the production of ethanol from sugarcane bagasse;.” 2014. Web. 26 Jan 2021.

Vancouver:

R V. Ultrasound assisted pretreatment and hydrolysis for the production of ethanol from sugarcane bagasse;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Jan 26]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/15203.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

R V. Ultrasound assisted pretreatment and hydrolysis for the production of ethanol from sugarcane bagasse;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/15203

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

8. Nieder-Heitmann, Mieke. Techno-economic and life cycle analyses for comparison of biorefinery scenarios for the production of succinic acid, itaconic acid and polyhydroxybutyrate (PHB) from sugarcane lignocelluloses.

Degree: PhD, Process Engineering, 2019, Stellenbosch University

URL: http://hdl.handle.net/10019.1/106120

► ENGLISH ABSTRACT: The pressure on energy resources worldwide combined with the awareness of the major impact industrial processes have on the environment, triggers the development… (more)

▼ ENGLISH ABSTRACT: The pressure on energy resources worldwide combined with the awareness of the major impact industrial processes have on the environment, triggers the development of alternative energy sources and methods to reduce waste. Anaerobic digestion of waste addresses both these criteria by simultaneously supplying energy and reducing waste that would otherwise have to be stored or burned. This study focuses on the anaerobic digestion of cattle manure and the processes associated with the products downstream of the digester that can potentially replace current sources of energy and nutrients. A pilot anaerobic digester at Stellenbosch University (SU) is used as the base for the mass balance but the process data used is obtained from literature. Six different sets of processes (scenarios) were evaluated based on the possible uses of the biogas and digestate outflows from the digester. Ecoinvent’s database together with GreenDelta as Life Cycle Assessment software provider was used to determine the life cycle assessment (LCA) of each scenario. The CML impact assessment method was used as it concentrates on the LCA categories as per the scope of this study. LCA is the methodology for determining relative environmental impacts of a process from cradle to grave. The CML environmental categories are acidification potential, climate change, ozone depletion potential, photochemical oxidation, terrestrial ecotoxicity, human toxicity, depletion of abiotic resources, aquatic toxicity and eutrophication. The results of each scenario are compared to a base case consisting of the normal operation of a milk cow stall, combined with offset processes for the six scenarios. In scenario 1 and 2 the biogas is used to heat SU’s indoor swimming pool while the digestate is either applied to fields as nutrient source or cleaned via pasteurisation for domestic use. Scenario 3 uses the digestate as nutrient supply while biogas is scrubbed and bottled for cooking. Scenario 4 converts the digestate solids into fertilizer pellets while a portion of the biogas is used for generating electricity. Scenario 5 and 6 both involve the cleaning and bottling of biogas for cooking. In scenario 5 the digestate solids are mixed with limestone for fertilizer production. The liquid phase is used for irrigation. Scenario 6 uses the liquid digestate as nutrient source in a photo bioreactor cultivating algae. The bio-oil produced is converted into biodiesel. The solid digestate is applied to agricultural fields as nutrient source. After normalizing the LCA results of the scenarios against the results of the base case, it was found that the application of digestate without phase separation has a lower environmental impact than digestate converted into fertilizer. Biogas used for heating and power generation has lower impacts on the environmental categories than biogas scrubbed and bottled for cooking. The impacts from the base case are higher than the impacts of an anaerobic digester combined with processes utilizing biogas and digestate in their raw… Advisors/Committee Members: Gorgens, Johann F., Stellenbosch University. Faculty of Engineering. Dept. of Process Engineering..

Subjects/Keywords: UCTD; Bagasse; Bio-energy (Biomass energy); Lignocellulose; Succinic acid; Sugarcane

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APA (6^th Edition):

Nieder-Heitmann, M. (2019). Techno-economic and life cycle analyses for comparison of biorefinery scenarios for the production of succinic acid, itaconic acid and polyhydroxybutyrate (PHB) from sugarcane lignocelluloses. (Doctoral Dissertation). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/106120

Chicago Manual of Style (16^th Edition):

Nieder-Heitmann, Mieke. “Techno-economic and life cycle analyses for comparison of biorefinery scenarios for the production of succinic acid, itaconic acid and polyhydroxybutyrate (PHB) from sugarcane lignocelluloses.” 2019. Doctoral Dissertation, Stellenbosch University. Accessed January 26, 2021. http://hdl.handle.net/10019.1/106120.

MLA Handbook (7^th Edition):

Nieder-Heitmann, Mieke. “Techno-economic and life cycle analyses for comparison of biorefinery scenarios for the production of succinic acid, itaconic acid and polyhydroxybutyrate (PHB) from sugarcane lignocelluloses.” 2019. Web. 26 Jan 2021.

Vancouver:

Nieder-Heitmann M. Techno-economic and life cycle analyses for comparison of biorefinery scenarios for the production of succinic acid, itaconic acid and polyhydroxybutyrate (PHB) from sugarcane lignocelluloses. [Internet] [Doctoral dissertation]. Stellenbosch University; 2019. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10019.1/106120.

Council of Science Editors:

Nieder-Heitmann M. Techno-economic and life cycle analyses for comparison of biorefinery scenarios for the production of succinic acid, itaconic acid and polyhydroxybutyrate (PHB) from sugarcane lignocelluloses. [Doctoral Dissertation]. Stellenbosch University; 2019. Available from: http://hdl.handle.net/10019.1/106120

Queensland University of Technology

9. Bewg, William P. Investigation of lignin biosynthesis in sugarcane for improved lignocellulosic ethanol production.

Degree: 2015, Queensland University of Technology

URL: https://eprints.qut.edu.au/86088/

► As oil use increases at a rate unsustainable for the environment and unmatchable by current levels of oil production, a major shift towards renewable energy… (more)

Subjects/Keywords: Bagasse; Lignin biosynthesis; Lignocellulose; RNAi; Second generation bioethanol; Sugarcane; ZmMYB31; ZmMYB42

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APA (6^th Edition):

Bewg, W. P. (2015). Investigation of lignin biosynthesis in sugarcane for improved lignocellulosic ethanol production. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/86088/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bewg, William P. “Investigation of lignin biosynthesis in sugarcane for improved lignocellulosic ethanol production.” 2015. Thesis, Queensland University of Technology. Accessed January 26, 2021. https://eprints.qut.edu.au/86088/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bewg, William P. “Investigation of lignin biosynthesis in sugarcane for improved lignocellulosic ethanol production.” 2015. Web. 26 Jan 2021.

Vancouver:

Bewg WP. Investigation of lignin biosynthesis in sugarcane for improved lignocellulosic ethanol production. [Internet] [Thesis]. Queensland University of Technology; 2015. [cited 2021 Jan 26]. Available from: https://eprints.qut.edu.au/86088/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bewg WP. Investigation of lignin biosynthesis in sugarcane for improved lignocellulosic ethanol production. [Thesis]. Queensland University of Technology; 2015. Available from: https://eprints.qut.edu.au/86088/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Addis Ababa University

10. Tsigehana, Gebremicael. Sugarcane Bagasse Ash as Partial Replacement of Cement in Concrete Production .

Degree: 2019, Addis Ababa University

URL: http://etd.aau.edu.et/handle/123456789/21008

► Sugarcane bagasse ash is a byproduct from cogeneration boilers of sugar industries found after the extraction of all economical sugar from sugar cane. The disposal… (more)

▼ Sugarcane bagasse ash is a byproduct from cogeneration boilers of sugar industries found after the extraction of all economical sugar from sugar cane. The disposal of this agricultural waste causes environmental problems around the sugar industries. Cement industry also creates environmental problem by emission of carbon dioxide during manufacturing of cement and consumes lot of raw materials. Therefore, this research deals sugarcane bagasse ash as partial replacement of cement in concrete production. First the sugarcane bagasse ash samples were collected from Wonji sugar factory. Sugarcane bagasse ash was sieved with 250µm sieve size. M25 grade strength of concrete were deign with five different proportions of concrete mixes. Sugarcane bagasse ash ranging from 5% to 20% by weight of cement including the control mix was prepared with a water cement ratio of 0.45. For each substitution ratio, 3 sets (a total of 12) concrete specimens were prepared for compressive strength test conducted at the age of 7, 14, 21 and 28 days. For this experimental work a total of 60 cubic concrete specimens for compressive strength test and 15 cylindrical concrete specimens for water absorption test were casted. Sugar cane bagasse ash has shown low density and higher surface area as compared to cement. The chemical composition of bagasse ash, combined value of SiO2, Al2O3, and Fe2O3, investigated in this study was 87.68 which is higher than the standard, value 70%, and qualifies to be a Class N Pozzolan. The results of the compressive strength of concrete work have shown that up to 5% replacement of the ordinary Portland cement by bagasse ash is possible. In addition, higher compressive strength at all test ages, 7, 14, 21 and 28 days, were observed. The 21and 28 day compressive strength value of concrete with 5% sugarcane bagasse ash replacement was showing a strength enhancement of about 8% and 6%, respectively. The Water absorption of concrete increases with increasing the sugarcane bagasse ash content of concrete with the exception of water absorption for the concrete with 5% sugarcane bagasse ash. 5% partial replacement of cement by sugarcane bagasse ash in concrete production results in a similar concrete properties and higher replacement could also be used with a slight reduction in the performance of the concrete. Advisors/Committee Members: Belay, Woldeyes (PhD) (advisor).

Subjects/Keywords: Sugarcane bagasse Ash; Cement; Concrete; water absorption; Compressive Strength

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APA (6^th Edition):

Tsigehana, G. (2019). Sugarcane Bagasse Ash as Partial Replacement of Cement in Concrete Production . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/handle/123456789/21008

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tsigehana, Gebremicael. “Sugarcane Bagasse Ash as Partial Replacement of Cement in Concrete Production .” 2019. Thesis, Addis Ababa University. Accessed January 26, 2021. http://etd.aau.edu.et/handle/123456789/21008.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tsigehana, Gebremicael. “Sugarcane Bagasse Ash as Partial Replacement of Cement in Concrete Production .” 2019. Web. 26 Jan 2021.

Vancouver:

Tsigehana G. Sugarcane Bagasse Ash as Partial Replacement of Cement in Concrete Production . [Internet] [Thesis]. Addis Ababa University; 2019. [cited 2021 Jan 26]. Available from: http://etd.aau.edu.et/handle/123456789/21008.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tsigehana G. Sugarcane Bagasse Ash as Partial Replacement of Cement in Concrete Production . [Thesis]. Addis Ababa University; 2019. Available from: http://etd.aau.edu.et/handle/123456789/21008

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

11. Wallace, Joshua. Enzymatic hydrolysis of steam pretreated bagasse : Enzyme preparations for efficient cellulose conversion and evaluation of physiochemical changes during hydrolysis.

Degree: MScEng, Process Engineering, 2013, Stellenbosch University

URL: http://hdl.handle.net/10019.1/79842

► ENGLISH ABSTRACT: Biomass recalcitrance represents the major technical obstacle in 2nd generation bio-ethanol production, as it impedes efficient enzyme action. Elucidating how the recalcitrant nature… (more)

▼ ENGLISH ABSTRACT: Biomass recalcitrance represents the major technical obstacle in 2nd generation bio-ethanol production, as it impedes efficient enzyme action. Elucidating how the recalcitrant nature of lignocellulosic biomass inhibits the enzymatic degradation of cell wall polysaccharides could help to overcome these obstacles. This decrease in overall enzymatic hydrolysis performance in the industry, calls for the addition of different enzymes that work synergistically to alleviate slow cellulose to glucose conversion rates and low final glucose yields. Furthermore, high enzyme dosages (greater than 25FPU/g cellulose ~ approximately 75g enzyme/ kg cellulose) are required for rapid biomass conversion rates and complete hydrolysis, which have a negative effect on the viability of the process, as enzyme addition is a cost intensive part of biomass derived bio-ethanol production. In this regard, this study strived to improve the 2nd generation bio-ethanol industry by elucidating the slowdown phenomenon related to biomass recalcitrance during enzymatic hydrolysis. The substrate and enzyme properties that affect enzymatic hydrolysis rate and yield were investigated. Additionally, screening and optimization of a commercially available enzyme cocktail for bio-ethanol production from steam pretreated sugarcane bagasse (SB) was performed. Therefore, in the present study, sugarcane bagasse was steam pretreated and subjected to enzymatic hydrolysis (Spezyme + Novozym 188) whereafter the kinetic of the conversion was studied. Furthermore, new commercially available cocktails (Cellic CTec2, Optiflow) were compared, and the dosage of the preferred cocktail (Cellic CTec2) optimized for the production of bio-ethanol from steam pretreated sugarcane bagasse. Additionally, xylanase (Cellic HTec2 and Multifect Xylanase), pectinase (Pectinex Ultra) and surfactant (Tween 80) supplementation was investigated for positive effects on glucose and xylose release, and on ethanol production. Three distinctive phases of cellulose conversion rates were observed in succession of each other: (1) initial fast phase, (2) intermediate, slower phase, and (3) the slowest recalcitrant phase. The material was characterised by physicochemical analysis during each of the stages during enzymatic hydrolysis. The results indicated that the slowdown was caused by an increased lignin/cellulose ratio combined with changes in accessible surface area for enzymatic action (determined by Simons‘ staining). Xylanase supplementation was the only significant factor improving the cellulase cocktails. The positive effect of xylanase on glucose and xylose release (rate and yield) was probably due to synergism between xylanases and cellulases, as well as the increased accessible surface area due to hemicellulose removal. Decreased solid loadings % (w/v) were also favorable for maximal cellulose conversion yield and rate with all enzymes studied. The optimized cocktail (0.15ml/g WIS Cellic CTec2 + 0.213ml/g WIS HTec2) resulted in 79.2% ethanol yield compared with 55% for… Advisors/Committee Members: Gorgens, Johann F., Stellenbosch University. Faculty of Engineering. Dept. of Process Engineering..

Subjects/Keywords: Cellulosic ethanol; Biomass recalcitrance; Sugarcane bagasse; Lignocellulose – Biotechnology; Hydrolases; Bagasse industry; Cellulose – Biodegradation; UCTD; Process Engineering

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APA (6^th Edition):

Wallace, J. (2013). Enzymatic hydrolysis of steam pretreated bagasse : Enzyme preparations for efficient cellulose conversion and evaluation of physiochemical changes during hydrolysis. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/79842

Chicago Manual of Style (16^th Edition):

Wallace, Joshua. “Enzymatic hydrolysis of steam pretreated bagasse : Enzyme preparations for efficient cellulose conversion and evaluation of physiochemical changes during hydrolysis.” 2013. Masters Thesis, Stellenbosch University. Accessed January 26, 2021. http://hdl.handle.net/10019.1/79842.

MLA Handbook (7^th Edition):

Wallace, Joshua. “Enzymatic hydrolysis of steam pretreated bagasse : Enzyme preparations for efficient cellulose conversion and evaluation of physiochemical changes during hydrolysis.” 2013. Web. 26 Jan 2021.

Vancouver:

Wallace J. Enzymatic hydrolysis of steam pretreated bagasse : Enzyme preparations for efficient cellulose conversion and evaluation of physiochemical changes during hydrolysis. [Internet] [Masters thesis]. Stellenbosch University; 2013. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10019.1/79842.

Council of Science Editors:

Wallace J. Enzymatic hydrolysis of steam pretreated bagasse : Enzyme preparations for efficient cellulose conversion and evaluation of physiochemical changes during hydrolysis. [Masters Thesis]. Stellenbosch University; 2013. Available from: http://hdl.handle.net/10019.1/79842

Universidade Estadual de Campinas

12. Baldassin Junior, Ricardo, 1979. Pirólise rápida de cana-de-açúcar integral em reator piloto de leito fluidizado: Fast pyrolysis of whole sugarcane in pilot-scale fluidized bed reactor.

Degree: 2015, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/256767

► Abstract: The efficient and sustainable conversion of lignocellulosic feedstocks in modern biofuels and biochemicals is one of the great desires of the whole world, in… (more)

▼ Abstract: The efficient and sustainable conversion of lignocellulosic feedstocks in modern biofuels and biochemicals is one of the great desires of the whole world, in view of the competitive advantages, potential of reduction of frontier agriculture expansion and reduction of oil dependence that only the bioenergy cultures may provide. In this context, Brazil shows an attractive scenery to develop an innovative and modern industry for biofuels and biochemical production, since it is one of the most important food, planted forest and biofuels world producer. Aiming to provide a better use and conversion of lignocellulosic feedstocks (largely available in Brazil), this work shows the first experimental results of the fast pyrolysis of sugarcane (whole sugarcane, trash and bagasse) conducted in a small scale fast pyrolysis plant from Feagri/Unicamp. The main objectives of this work were to evaluate the chemicals compositions of the biomasses and to quantify and to qualify the main fast pyrolysis products (charcoals and bio-oils). The biomasses analysis (proximate, ultimate and fiber/lignin analysis) showed there were no significant differences between the biomasses. The pretreatment process (chopping and grinding process) were conducted well using conventional technologies, and the sun drying process was able reducing the biomasses water contents to the level needed. After some adjustments and improvements, the fast pyrolysis were conducted well, with bio-oil yield productions between 12% and 17%, charcoal yield productions between 25% and 27%, and energy conversions between 42% and 67%. The bio-oils and charcoals proximate and ultimate analysis showed that there were no relevant differences among the products. However, the chromatography analysis demonstrated there were differences in the bio-oils organic compositions (distribution percentages of chemical groups), but with prevalence of carboxilic acids and phenols. In view of low bio-oils production, high charcoals productions and the high volatiles presences in the charcoals (between 20% e 25% in %wt), it was demonstrated that improvements and new studies are needed Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Cortez, Luís Augusto Barbosa, 1957- (advisor), Universidade Estadual de Campinas. Faculdade de Engenharia Agrícola (institution), Programa de Pós-Graduação em Engenharia Agrícola (nameofprogram), Leal, Manoel Regis Lima Verde (committee member), Gómez, Edgardo Olivares (committee member), Franco, Telma Teixeira (committee member), Nogueira, Luiz Augusto Horta (committee member).

Subjects/Keywords: Palha; Bagaço de cana; Bio-óleo; Carvão; Composição química; Sugarcane trash; Sugarcane bagasse; Bio-oil; Charcoal; Chemical composition

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APA (6^th Edition):

Baldassin Junior, Ricardo, 1. (2015). Pirólise rápida de cana-de-açúcar integral em reator piloto de leito fluidizado: Fast pyrolysis of whole sugarcane in pilot-scale fluidized bed reactor. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/256767

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Baldassin Junior, Ricardo, 1979. “Pirólise rápida de cana-de-açúcar integral em reator piloto de leito fluidizado: Fast pyrolysis of whole sugarcane in pilot-scale fluidized bed reactor.” 2015. Thesis, Universidade Estadual de Campinas. Accessed January 26, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256767.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Baldassin Junior, Ricardo, 1979. “Pirólise rápida de cana-de-açúcar integral em reator piloto de leito fluidizado: Fast pyrolysis of whole sugarcane in pilot-scale fluidized bed reactor.” 2015. Web. 26 Jan 2021.

Vancouver:

Baldassin Junior, Ricardo 1. Pirólise rápida de cana-de-açúcar integral em reator piloto de leito fluidizado: Fast pyrolysis of whole sugarcane in pilot-scale fluidized bed reactor. [Internet] [Thesis]. Universidade Estadual de Campinas; 2015. [cited 2021 Jan 26]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/256767.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Baldassin Junior, Ricardo 1. Pirólise rápida de cana-de-açúcar integral em reator piloto de leito fluidizado: Fast pyrolysis of whole sugarcane in pilot-scale fluidized bed reactor. [Thesis]. Universidade Estadual de Campinas; 2015. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/256767

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

13. Milessi, Thais Suzane dos Santos. Imobilização de células de Scheffersomyces stipitis para obtenção de etanol de segunda geração em biorreator STR tipo cesta.

Degree: Mestrado, Microbiologia Aplicada, 2012, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/97/97132/tde-28082013-103536/ ;

► O presente trabalho teve por objetivo avaliar condições de imobilização da levedura Scheffersomyces stipitis NRRL Y-7124 pelo método do aprisionamento em gel de alginato de… (more)

▼ O presente trabalho teve por objetivo avaliar condições de imobilização da levedura Scheffersomyces stipitis NRRL Y-7124 pelo método do aprisionamento em gel de alginato de cálcio visando à produção de bioetanol em biorreator STR tipo cesta à partir de hidrolisado hemicelulósico de bagaço de cana-de-açúcar. Primeiramente, realizou-se as etapas de obtenção, destoxificação e caracterização do hidrolisado hemicelulósico de bagaço de cana-de-açúcar. Realizou-se em seguida um screening objetivando a seleção de um meio de cultivo adequado para a produção de etanol por esta levedura. O meio escolhido foi aquele onde se suplementou o hidrolisado com extrato de levedura (3,0 g/L), peptona (5,0 g/L), (NH4)2SO4 (2,0 g/L) e CaCl2 (0,1 g/L), onde verificou-se um fator de conversão de xilose à etanol (Yp/s) de 0,33 g/g. As condições de imobilização da levedura foram então avaliadas por planejamento fatorial 23 completo onde os fatores concentração de alginato de sódio, concentração do cloreto de cálcio e tempo de cura foram investigados. Após a análise estatística, as condições 2% de alginato de sódio, 0,1M de cloreto de cálcio e tempo de cura de 12 horas foram fixadas para as etapas seguintes. Nestas condições, avaliou-se então a influência da concentração de células à serem imobilizadas e agitação durante a fermentação a partir de um planejamento fatorial 22 completo, definindo-se assim 10 g/L de células e 100 rpm como condições ideais. Após a determinação das condições de imobilização do processo, verificou-se a estabilidade das células imobilizadas em repetidos ciclos fermentativos, para isso cinco bateladas repetidas em frascos Erlenmeyer foram realizadas. Observou-se que apesar da levedura assimilar xilose e produzir etanol em todos os ensaios, uma diminuição na eficiência da fermentação foi verificada, diminuindo em 24% da terceira para a quarta batelada, indicando assim que a levedura imobilizada era viável para o sistema de batelada repetida em até 3 ciclos nas condições estudadas. Iniciou-se então ensaios fermentativos em biorreator STR tipo cesta, realizando-se ensaios em meio sintético e em hidrolisado hemicelulósico. Observou-se reprodutibilidade nos ensaios utilizando os diferentes meios, com um valor de Yp/s de 0,21g/g e uma produtividade volumétrica de 0,15 g/L.h em ambos os ensaios. Fermentações em sistema de bateladas repetidas foram realizadas neste biorreator STR tipo cesta. Realizou-se cinco ciclos consecutivos, ao final dos quais observou-se comportamento semelhante às bateladas repetidas realizadas em frascos Erlenmeyer, na qual a partir de três ciclos a capacidade fermentativa da levedura S. stipitis diminuiu, apresentando uma produtividade volumétrica em torno de 0,16 g/L.h nas três primeiras bateladas. O gel de alginato de cálcio apresentou considerável estabilidade em sistema de bateladas repetidas indicando a possibilidade de sua utilização nesse processo. Embora os resultados obtidos neste trabalho sejam inferiores aos observados com células livres por outros autores, os mesmos demonstraram o potencial… Advisors/Committee Members: Silva, Silvio Silverio da.

Subjects/Keywords: Bagaço de cana-de-açúcar; Bioetanol; Bioethanol; Biotechnology; Biotecnologia; Células imobilizadas; Immobilized cells; Sugarcane Bagasse

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APA (6^th Edition):

Milessi, T. S. d. S. (2012). Imobilização de células de Scheffersomyces stipitis para obtenção de etanol de segunda geração em biorreator STR tipo cesta. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/97/97132/tde-28082013-103536/ ;

Chicago Manual of Style (16^th Edition):

Milessi, Thais Suzane dos Santos. “Imobilização de células de Scheffersomyces stipitis para obtenção de etanol de segunda geração em biorreator STR tipo cesta.” 2012. Masters Thesis, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/97/97132/tde-28082013-103536/ ;.

MLA Handbook (7^th Edition):

Milessi, Thais Suzane dos Santos. “Imobilização de células de Scheffersomyces stipitis para obtenção de etanol de segunda geração em biorreator STR tipo cesta.” 2012. Web. 26 Jan 2021.

Vancouver:

Milessi TSdS. Imobilização de células de Scheffersomyces stipitis para obtenção de etanol de segunda geração em biorreator STR tipo cesta. [Internet] [Masters thesis]. University of São Paulo; 2012. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/97/97132/tde-28082013-103536/ ;.

Council of Science Editors:

Milessi TSdS. Imobilização de células de Scheffersomyces stipitis para obtenção de etanol de segunda geração em biorreator STR tipo cesta. [Masters Thesis]. University of São Paulo; 2012. Available from: http://www.teses.usp.br/teses/disponiveis/97/97132/tde-28082013-103536/ ;

14. Espirito Santo, Melissa Cristina do. Otimização de estratégias de pré-tratamento de bagaço de cana-de-açúcar para produção de etanol de segunda geração via hidrólise enzimática.

Degree: Mestrado, Física Aplicada, 2015, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/76/76132/tde-23042015-104624/ ;

►

Atualmente, o aumento da preocupação com a sustentabilidade ambiental, alinhado às perspectivas de esgotamento das reservas de petróleo, tem direcionado às buscas por fontes renováveis… (more)

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Atualmente, o aumento da preocupação com a sustentabilidade ambiental, alinhado às perspectivas de esgotamento das reservas de petróleo, tem direcionado às buscas por fontes renováveis de energia. O emprego de resíduos agroindustriais, principalmente de usinas sucroalcooleiras destaca-se como sendo uma alternativa para a produção de etanol de segunda geração. Dentre as metodologias aplicadas para disponibilização dos açúcares fermentescíveis está a hidrólise enzimática. Ainda, para facilitar esta etapa e torná-la mais acessível, submete-se, previamente, o material lignocelulósico a um pré-tratamento, com o objetivo de contribuir com a susceptibilidade da celulose a ataques enzimáticos. No entanto, devido à complexidade das estruturas lignocelulósicas, os processos de hidrólise e pré-tratamento precisam se tornar mais eficientes e economicamente viáveis. Desta forma, o objetivo desse trabalho foi avaliar e caracterizar os pré-tratamentos hidrotérmico e organossolve (etanol 50%), isoladamente, e estes combinados em diferentes condições, assim como a influência destes procedimentos na estrutura e composição da biomassa, bem como na hidrólise enzimática. Os resultados demonstraram que os pré-tratamentos hidrotérmicos a 160 ºC nas condições analisadas foram pouco efetivos na melhora do acesso enzimático durante a etapa de hidrólise, pois atuaram de maneira branda na parede celular, pouco solubilizando a hemicelulose e lignina, conforme as análises físicas comprovaram. Os tratamentos combinados hidrotérmico 30 min e 60 min a 160 ºC seguidos pelo organossolve por 150 min apresentaram semelhança morfológica e alta solublização da lignina e hemicelulose, justificando os valores de hidrólise. Nossos resultados abrem perspectivas de novos estudos que visam a otimização dos pré-tratamentos hidrotérmicos e organossolve, além da compreensão das alterações composicionais e morfológicas que levam à melhoria da hidrólise enzimática na biomassa lignocelulósica.

The concerns with environmental sustainability and perspectives of petroleum reserves depletion motivated exploration of new and sustainable energy sources. In this context, renewable energies start to receive significant attention in the world´s energy matrix, with biofuels playing a special role. The use of agro-industrial residues, mainly from the sugarcane industry, stands out as a viable alternative for the production of second-generation ethanol. The enzymatic hydrolysis of the biomass has a number of advantages for polysaccharides depolimerization, such as high substrate specificity, low environmental impact and lack of corrosion issues. To further facilitate this procedure and to make biomass more accessible, the lignocellulosic material has to be previously submitted to a pretreatment in order to increase the cellulose accessibility and susceptibility to the enzymatic action. This process aims at the disorganization of the chemical structure of the lignocellulosic matter, facilitating the further steps of hydrolysis and fermentation. Due to the complexity of the…

Advisors/Committee Members: Azevêdo, Eduardo Ribeiro de.

Subjects/Keywords: Bagaço de cana-de-açúcar; Bioetanol; Bioethanol; Enzymatic hydrolysis; Hidrólise enzimática; Sugarcane bagasse

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Espirito Santo, M. C. d. (2015). Otimização de estratégias de pré-tratamento de bagaço de cana-de-açúcar para produção de etanol de segunda geração via hidrólise enzimática. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/76/76132/tde-23042015-104624/ ;

Chicago Manual of Style (16^th Edition):

Espirito Santo, Melissa Cristina do. “Otimização de estratégias de pré-tratamento de bagaço de cana-de-açúcar para produção de etanol de segunda geração via hidrólise enzimática.” 2015. Masters Thesis, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-23042015-104624/ ;.

MLA Handbook (7^th Edition):

Espirito Santo, Melissa Cristina do. “Otimização de estratégias de pré-tratamento de bagaço de cana-de-açúcar para produção de etanol de segunda geração via hidrólise enzimática.” 2015. Web. 26 Jan 2021.

Vancouver:

Espirito Santo MCd. Otimização de estratégias de pré-tratamento de bagaço de cana-de-açúcar para produção de etanol de segunda geração via hidrólise enzimática. [Internet] [Masters thesis]. University of São Paulo; 2015. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/76/76132/tde-23042015-104624/ ;.

Council of Science Editors:

Espirito Santo MCd. Otimização de estratégias de pré-tratamento de bagaço de cana-de-açúcar para produção de etanol de segunda geração via hidrólise enzimática. [Masters Thesis]. University of São Paulo; 2015. Available from: http://www.teses.usp.br/teses/disponiveis/76/76132/tde-23042015-104624/ ;

15. Marabezi, Karen. Deslignificação de bagaço de cana-de-açúcar: reações, isolamento e utilização de ligninas.

Degree: PhD, Físico-Química, 2014, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/75/75134/tde-02022015-112400/ ;

►

A utilização de biomassa vegetal como matéria-prima para a obtenção de produtos químicos exige pré-tratamentos que levem à desestruturação do complexo lignocelulósico, sendo o principal… (more)

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A utilização de biomassa vegetal como matéria-prima para a obtenção de produtos químicos exige pré-tratamentos que levem à desestruturação do complexo lignocelulósico, sendo o principal desafio a remoção seletiva e quantitativa da lignina. O bagaço de cana-de-açúcar, como todo material lignocelulósico, é composto por celulose, polioses e lignina, como principais componentes macromoleculares, e vem sendo alvo de pesquisas para produção de bioetanol e produtos com maior valor agregado. A heterogeneidade das ligninas obtidas como subprodutos dos processos de deslignificação é uma das responsáveis pela limitação de possíveis aplicações industriais. Contudo, os recentes desenvolvimentos no etanol celulósico levarão a um aumento da quantidade de lignina disponível numa base global. Estas considerações futuras têm renovado o interesse no isolamento e conversão de lignina em produtos químicos de maior valor agregado. Neste sentido, o isolamento e a caracterização destas ligninas são de fundamental importância. Neste trabalho apresentamos os resultados de estudos de deslignificação do bagaço de cana-de-açúcar pela aplicação de diferentes processos de polpação (processos Soda, Sulfito e Organossolve etanol/água). Estes processos foram avaliados segundo o rendimento do pré-tratamento e seletividade frente aos componentes macromoleculares dos materiais lignocelulósicos. A segunda etapa do trabalho descreve a caracterização das ligninas obtidas nos diferentes processos de polpação, visando posteriores modificações e aplicações como derivados oxidados e na preparação de novos materiais poliméricos termoplásticos e/ou termorrígidos. Os processos produziram diferentes ligninas, sendo essas diferenças observadas na distribuição de massas molares, quantidade de hidroxilas, estabilidade térmica, quantidade de impurezas, etc. A utilização do fracionamento por solventes foi efetivo na obtenção de diferentes massas molares e menores polidispersividades. As condições empregadas nas poliesterificações produziram polímeros com características diferentes, como viscosidade, temperatura de transição vítrea e estabilidade térmica.

The use of plant biomass as a feedstock for the production of chemicals requires pre-treatments which lead to disruption of the lignocellulosic complex, the main challenge being selective and quantitative removal of lignin. Sugarcane bagasse is a lignocellulosic material composed of cellulose, lignin and polyoses as major macromolecular components, and has been the subject of research for bioethanol production and products with higher added value. The heterogeneity of lignins obtained as byproducts of delignification processes is one reason for the limitation of possible industrial applications. However, recent developments in cellulosic ethanol will raise the amount of lignin available on a global basis. These forward-looking statements have renewed interest in the isolation and conversion of lignin in chemical products with higher added value. In this sense, the isolation and characterization of lignins is of…

Advisors/Committee Members: Curvelo, Antonio Aprigio da Silva.

Subjects/Keywords: Bagaço de cana-de-açúcar; biorefinery; biorrefinaria; lignin; lignina; poliéster; polyester; Sugarcane bagasse

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Marabezi, K. (2014). Deslignificação de bagaço de cana-de-açúcar: reações, isolamento e utilização de ligninas. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/75/75134/tde-02022015-112400/ ;

Chicago Manual of Style (16^th Edition):

Marabezi, Karen. “Deslignificação de bagaço de cana-de-açúcar: reações, isolamento e utilização de ligninas.” 2014. Doctoral Dissertation, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-02022015-112400/ ;.

MLA Handbook (7^th Edition):

Marabezi, Karen. “Deslignificação de bagaço de cana-de-açúcar: reações, isolamento e utilização de ligninas.” 2014. Web. 26 Jan 2021.

Vancouver:

Marabezi K. Deslignificação de bagaço de cana-de-açúcar: reações, isolamento e utilização de ligninas. [Internet] [Doctoral dissertation]. University of São Paulo; 2014. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/75/75134/tde-02022015-112400/ ;.

Council of Science Editors:

Marabezi K. Deslignificação de bagaço de cana-de-açúcar: reações, isolamento e utilização de ligninas. [Doctoral Dissertation]. University of São Paulo; 2014. Available from: http://www.teses.usp.br/teses/disponiveis/75/75134/tde-02022015-112400/ ;

16. Cardoso, Elisabeth Carvalho Leite. Desenvolvimento de espumas parcialmente biodegradáveis a partir de blendas de PP/HMSPP com polímeros naturais e sintéticos.

Degree: PhD, Tecnologia Nuclear - Materiais, 2014, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/85/85134/tde-30092014-082533/ ;

►

Os polímeros são usados em numerosas aplicações e em diferentes segmentos industriais, gerando enormes quantidades de rejeitos no meio ambiente. Entre os vários componentes de… (more)

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Os polímeros são usados em numerosas aplicações e em diferentes segmentos industriais, gerando enormes quantidades de rejeitos no meio ambiente. Entre os vários componentes de resíduos nos aterros sanitários estão os materiais poliméricos, entre eles o Polipropileno que contribuem com 20 a 30% do volume total de resíduos sólidos. Como os materiais poliméricos são imunes à degradação microbiana, permanecem no solo e nos aterros sanitários como um resíduo semipermanente. A preocupação ambiental no sentido de redução de resíduos se voltou para o desenvolvimento de polímeros renováveis para a fabricação de materiais que se decompõem na natureza, entre eles estão às espumas poliméricas biodegradáveis. Os polímeros espumados são considerados materiais do futuro, com um leque abrangente de aplicações; as espumas estruturais, de alta densidade, são usadas principalmente na construção civil, em substituição a metais, madeiras e concreto com a finalidade básica de reduzir custos com materiais. O objetivo deste trabalho foi a incorporação de blendas da matriz polimérica PP/HMSPP com bagaço de cana-de-açúcar, PHB e PLA, na produção de espumas estruturais. A degradação via tratamento térmico, nas temperaturas 100º, 120º e 160º C não foi suficiente para induzir a biodegradabilidade; já a degradação via irradiação gama, nas doses 50, 100, 150, 200 e 500 kGy se mostrou eficaz para indução da biodegradabilidade. As composições com bagaço, irradiadas, também sofreram deterioração superficial, favorecendo a absorção de água, e, consequentemente, uma maior biodegradação.

Polymers are used in various applications and in different industrial areas providing enormous quantities of wastes in environment. Among diverse components of residues in landfills are polymeric materials, including Polypropylene, which contribute with 20 to 30% of total volume of solid residues. As polymeric materials are immune to microbial degradation, they remain in soil and in landfills as a semi-permanent residue. Environmental concerning in litter reduction is being directed to renewable polymers development for manufacturing of polymeric foams. Foamed polymers are considered future materials, with a wide range of applications; high density structural foams are specially used in civil construction, in replacement of metals, woods and concrete with a final purpose of reducing materials costs. At present development, it was possible the incorporation of PP/HMSPP polymeric matrix blends with sugarcane bagasse, PHB and PLA, in structural foams production. Thermal degradation at 100, 120 and 160°C temperatures was not enough to induce biodegradability. Gamma irradiation degradation, at 50, 100, 150, 200 and 500 kGy showed effective for biodegradability induction. Irradiated bagasse blends suffered surface erosion, in favor of water uptake and consequently, a higher biodegradation in bulk structure.

Advisors/Committee Members: Lima, Luis Filipe Carvalho Pedroso de.

Subjects/Keywords: bagaço de cana-de-açúcar; biodegradabilidade; biodegradability; espumas; foams; PHB; PHB; PLA; PLA; sugarcane bagasse

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cardoso, E. C. L. (2014). Desenvolvimento de espumas parcialmente biodegradáveis a partir de blendas de PP/HMSPP com polímeros naturais e sintéticos. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/85/85134/tde-30092014-082533/ ;

Chicago Manual of Style (16^th Edition):

Cardoso, Elisabeth Carvalho Leite. “Desenvolvimento de espumas parcialmente biodegradáveis a partir de blendas de PP/HMSPP com polímeros naturais e sintéticos.” 2014. Doctoral Dissertation, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-30092014-082533/ ;.

MLA Handbook (7^th Edition):

Cardoso, Elisabeth Carvalho Leite. “Desenvolvimento de espumas parcialmente biodegradáveis a partir de blendas de PP/HMSPP com polímeros naturais e sintéticos.” 2014. Web. 26 Jan 2021.

Vancouver:

Cardoso ECL. Desenvolvimento de espumas parcialmente biodegradáveis a partir de blendas de PP/HMSPP com polímeros naturais e sintéticos. [Internet] [Doctoral dissertation]. University of São Paulo; 2014. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/85/85134/tde-30092014-082533/ ;.

Council of Science Editors:

Cardoso ECL. Desenvolvimento de espumas parcialmente biodegradáveis a partir de blendas de PP/HMSPP com polímeros naturais e sintéticos. [Doctoral Dissertation]. University of São Paulo; 2014. Available from: http://www.teses.usp.br/teses/disponiveis/85/85134/tde-30092014-082533/ ;

Queensland University of Technology

17. Gilfillan, William N. Developing starch-based polymer composites.

Degree: 2015, Queensland University of Technology

URL: https://eprints.qut.edu.au/86612/

► This project aim was to replace petroleum-based plastic packaging materials that pollute the environment, with biodegradable starch-based polymer composites. It was demonstrated that untreated sugar… (more)

Subjects/Keywords: biodegradable; bioplastic; sustainable; thermoplastic; sugarcane bagasse; nanofibre; microfibre; composite; starch; cast film

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gilfillan, W. N. (2015). Developing starch-based polymer composites. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/86612/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gilfillan, William N. “Developing starch-based polymer composites.” 2015. Thesis, Queensland University of Technology. Accessed January 26, 2021. https://eprints.qut.edu.au/86612/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gilfillan, William N. “Developing starch-based polymer composites.” 2015. Web. 26 Jan 2021.

Vancouver:

Gilfillan WN. Developing starch-based polymer composites. [Internet] [Thesis]. Queensland University of Technology; 2015. [cited 2021 Jan 26]. Available from: https://eprints.qut.edu.au/86612/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gilfillan WN. Developing starch-based polymer composites. [Thesis]. Queensland University of Technology; 2015. Available from: https://eprints.qut.edu.au/86612/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Durban University of Technology

18. Mthembu, Lethiwe Debra. Production of levulinic acid from sugarcane bagasse.

Degree: 2016, Durban University of Technology

URL: http://hdl.handle.net/10321/1713

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Submitted in fulfillment of the academic requirements for the Masters in Applied Sciences (Chemistry), Durban University of Technology, Durban, South Africa, 2016.

The main aim… (more)

Subjects/Keywords: Bagasse; Sugarcane products; Organic acids; Ketonic acids; Sugar – Manufacture and refining – By-products

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mthembu, L. D. (2016). Production of levulinic acid from sugarcane bagasse. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/1713

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mthembu, Lethiwe Debra. “Production of levulinic acid from sugarcane bagasse.” 2016. Thesis, Durban University of Technology. Accessed January 26, 2021. http://hdl.handle.net/10321/1713.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mthembu, Lethiwe Debra. “Production of levulinic acid from sugarcane bagasse.” 2016. Web. 26 Jan 2021.

Vancouver:

Mthembu LD. Production of levulinic acid from sugarcane bagasse. [Internet] [Thesis]. Durban University of Technology; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10321/1713.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mthembu LD. Production of levulinic acid from sugarcane bagasse. [Thesis]. Durban University of Technology; 2016. Available from: http://hdl.handle.net/10321/1713

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Estadual de Campinas

19. Zoratto, Ana Cristina, 1980-. Redução da concentração de herbicidas em águas por filtração em multiplas etapas seguida de coluna de carvão ativado de babaçu e obtenção de adsorventes a partir de bagaço de cana e casca de Moringa oleífera: Reducing of herbicides concentration in water by filtration in multiple steps followed by activated carbon colunns babassu and getting adsorbents from sugar cane bagasse and shell of Moringa oleifera.

Degree: 2014, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/258115

► Abstract: Abstract: Increased productivity and the acreage of cane sugar in the country has been accompanied by intensive use of herbicides, which represent the most… (more)

▼ Abstract: Abstract: Increased productivity and the acreage of cane sugar in the country has been accompanied by intensive use of herbicides, which represent the most widely products found in water resources worldwide. Therefore, the concern about contamination of water resources and the need for treatment not only covers major urban centers, but also small communities and rural areas, which most often use water for supply purposes without any form of treatment.For this reason, the present study aimed to evaluate the efficiency in reducing herbicides: atrazine, hexazinone and tebuthiuron in Water Treatment System through multi-stage filtration - FiME, followed by columns (filters) of babassu granular activated carbon with different filtration rates, adding the production of activated carbons of agricultural by products; bagasse from sugar cane and pod shell of MoringaOleifera, with high surface area and micro porosity, becoming an alternative water treatment in rural communities. The evaluation of herbicidal reduction into FiME was performed through three treatments, with different filters of CAGB installed at the end of the filtration system. The filtration rates in this step varied between 10.8 and 220.6 m3.m-2.d-1. The values obtained on the steps of PF and PL, show that there is no significant reduction in herbicide concentration, and that FCAGB with higher HDT and lower filtration rate exhibit the highest efficiencies in reducing the herbicides atrazine, hexazinone and tebuthiuron. The results show that addition of the developed surface area of the activated carbon, other factors influence the adsorption process, such as solubility of the adsorbate, CA surface charge, pH and temperature of the solution. By having lower solubility and greater hydrophobic character, atrazine herbicide was the most adsorbed herbicide by the CAGB during the treatments Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Paterniani, José Euclides Stipp, 1957- (advisor), Universidade Estadual de Campinas. Faculdade de Engenharia Civil, Arquitetura e Urbanismo (institution), Programa de Pós-Graduação em Engenharia Civil (nameofprogram), Isaac, Ricardo de Lima (committee member), Queiroz, Sônia Cláudia do Nascimento (committee member), Medeiros, Gerson Araújo de (committee member), Pereira, Edilaine Regina (committee member).

Subjects/Keywords: Carvão; Adsorção; Filtração; Herbicidas; Babaçu; Bagaço de cana; Coal; Adsorption; Filtration; Herbicides; Babassu; Sugarcane bagasse

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zoratto, Ana Cristina, 1. (2014). Redução da concentração de herbicidas em águas por filtração em multiplas etapas seguida de coluna de carvão ativado de babaçu e obtenção de adsorventes a partir de bagaço de cana e casca de Moringa oleífera: Reducing of herbicides concentration in water by filtration in multiple steps followed by activated carbon colunns babassu and getting adsorbents from sugar cane bagasse and shell of Moringa oleifera. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/258115

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zoratto, Ana Cristina, 1980-. “Redução da concentração de herbicidas em águas por filtração em multiplas etapas seguida de coluna de carvão ativado de babaçu e obtenção de adsorventes a partir de bagaço de cana e casca de Moringa oleífera: Reducing of herbicides concentration in water by filtration in multiple steps followed by activated carbon colunns babassu and getting adsorbents from sugar cane bagasse and shell of Moringa oleifera.” 2014. Thesis, Universidade Estadual de Campinas. Accessed January 26, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258115.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zoratto, Ana Cristina, 1980-. “Redução da concentração de herbicidas em águas por filtração em multiplas etapas seguida de coluna de carvão ativado de babaçu e obtenção de adsorventes a partir de bagaço de cana e casca de Moringa oleífera: Reducing of herbicides concentration in water by filtration in multiple steps followed by activated carbon colunns babassu and getting adsorbents from sugar cane bagasse and shell of Moringa oleifera.” 2014. Web. 26 Jan 2021.

Vancouver:

Zoratto, Ana Cristina 1. Redução da concentração de herbicidas em águas por filtração em multiplas etapas seguida de coluna de carvão ativado de babaçu e obtenção de adsorventes a partir de bagaço de cana e casca de Moringa oleífera: Reducing of herbicides concentration in water by filtration in multiple steps followed by activated carbon colunns babassu and getting adsorbents from sugar cane bagasse and shell of Moringa oleifera. [Internet] [Thesis]. Universidade Estadual de Campinas; 2014. [cited 2021 Jan 26]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/258115.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zoratto, Ana Cristina 1. Redução da concentração de herbicidas em águas por filtração em multiplas etapas seguida de coluna de carvão ativado de babaçu e obtenção de adsorventes a partir de bagaço de cana e casca de Moringa oleífera: Reducing of herbicides concentration in water by filtration in multiple steps followed by activated carbon colunns babassu and getting adsorbents from sugar cane bagasse and shell of Moringa oleifera. [Thesis]. Universidade Estadual de Campinas; 2014. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/258115

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Estadual de Campinas

20. Jaimes Figueroa, Jaiver Efren, 1986. Processos termoquímicos para processamento de bagaço de cana-de-açúcar : pirólise em leito fixo e gaseificação em leito fluidizado: Thermochemical routes for sugarcane bagasse processing : fixed bed pyrolysis and fluidized bed gasification.

Degree: 2015, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/266032

► Abstract: The thermochemical processes allow the biomass conversion in others products, producing simpler structures, which are more interesting. Two main thermochemical processes are the pyrolysis… (more)

▼ Abstract: The thermochemical processes allow the biomass conversion in others products, producing simpler structures, which are more interesting. Two main thermochemical processes are the pyrolysis and gasification, which produce tar and gases. These products have an enormous potential as intermediate chemical compounds, fuels, lubricants and energy, making the thermochemical processes very relevant. In this work, both processes aforementioned were object of experimental study, using sugarcane bagasse as raw material. Two different reactors were analyzed: fixed bed and fluidized bed. A bibliographic research was made as a starting point, collecting enough information about the properties of the raw material, typical dimensions of the reactors, reaction kinetics and characteristics of the products. In order to study the fluid-dynamic behavior of the system some simulations were performed, using the ANSYS-FLUENT V12TM software. The simulation results presented small deviation compared to the experimental results reported on the literature, which indicates that the simulated system is a powerful tool to validate thermochemical processes that involve lignocellulosic materials. Subsequently, two experimental studies were developed: one for pyrolysis and other for gasification. For each process mentioned before, we used two types of reactors that differ from the reactors found on the literature. Bagasse pyrolysis was made on a fixed bed batch reactor, using a mixture of bagasse and alumina-silica (the bagasse does not exceed 4 grams). Different temperatures above 500 ºC were used, showing that the quantity of obtained gases were proportional to the temperature, while the quantity of carbon was inversely proportional. On the other hand, the tar produced in the reaction does not depend on the temperature (20 % mass). The same reactor was used to do the gasification of sugarcane bagasse at 900 ºC and a steam/bagasse mass ratio of 2.0, obtaining a bigger production of gas and smaller production of carbon. Additionally, the obtained gas contains a bigger proportion of hydrogen than the gas produced with pyrolysis, using the same temperature. Finally, other gasification were performed, using a fluidized bed reactor acquired by the LOPCA/BIOEN/FEQ/UNICAMP research group, which produces a bagasse output up to 3 kg/h. All reactions were made using different ER relations (air/bagasse mass ratio). Each ER relation produced a different reaction temperature, obtaining a product distribution with different characteristics between them. The products obtained were characterized. The higher ER values offered bigger temperatures of reaction and consequently, higher yield of gas and percentages of H2 and CO proportions Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Maciel, Maria Regina Wolf, 1955- (advisor), Universidade Estadual de Campinas. Faculdade de Engenharia Química (institution), Programa de Pós-Graduação em Engenharia Química (nameofprogram), Lunelli, Betânia Hoss (committee member), Pinto, Jefferson Ferreira (committee member), Mariano, Adriano Pinto (committee member), Concha, Viktor Oswaldo Cárdenas (committee member).

Subjects/Keywords: Termoquímica; Pirólise; Gaseificação; Cana-de-açúcar; Biomassa; Thermochemical; Pyrolysis; Gasification; Sugarcane bagasse; Biomass

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jaimes Figueroa, Jaiver Efren, 1. (2015). Processos termoquímicos para processamento de bagaço de cana-de-açúcar : pirólise em leito fixo e gaseificação em leito fluidizado: Thermochemical routes for sugarcane bagasse processing : fixed bed pyrolysis and fluidized bed gasification. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/266032

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jaimes Figueroa, Jaiver Efren, 1986. “Processos termoquímicos para processamento de bagaço de cana-de-açúcar : pirólise em leito fixo e gaseificação em leito fluidizado: Thermochemical routes for sugarcane bagasse processing : fixed bed pyrolysis and fluidized bed gasification.” 2015. Thesis, Universidade Estadual de Campinas. Accessed January 26, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266032.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jaimes Figueroa, Jaiver Efren, 1986. “Processos termoquímicos para processamento de bagaço de cana-de-açúcar : pirólise em leito fixo e gaseificação em leito fluidizado: Thermochemical routes for sugarcane bagasse processing : fixed bed pyrolysis and fluidized bed gasification.” 2015. Web. 26 Jan 2021.

Vancouver:

Jaimes Figueroa, Jaiver Efren 1. Processos termoquímicos para processamento de bagaço de cana-de-açúcar : pirólise em leito fixo e gaseificação em leito fluidizado: Thermochemical routes for sugarcane bagasse processing : fixed bed pyrolysis and fluidized bed gasification. [Internet] [Thesis]. Universidade Estadual de Campinas; 2015. [cited 2021 Jan 26]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/266032.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jaimes Figueroa, Jaiver Efren 1. Processos termoquímicos para processamento de bagaço de cana-de-açúcar : pirólise em leito fixo e gaseificação em leito fluidizado: Thermochemical routes for sugarcane bagasse processing : fixed bed pyrolysis and fluidized bed gasification. [Thesis]. Universidade Estadual de Campinas; 2015. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/266032

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Estadual de Campinas

21. Martins, Luiza Helena da Silva, 1984-. Avaliação de diferentes pré-tratamentos do bagaço de cana de açúcar considerando altas cargas de sólidos: Evaluation of different pretreatments of sugarcane bagasse considering high solid loads.

Degree: 2015, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/266025

► Abstract: The sugar industry is a very important activity for Brazil, and has the bagasse sugarcane as the main by-product, which can be used for… (more)

▼ Abstract: The sugar industry is a very important activity for Brazil, and has the bagasse sugarcane as the main by-product, which can be used for the 2nd generation ethanol production. In this context, there are increasing studies related to pretreatment technologies, essential step for efficient production of this type of fuel. However, the cost of reagents and treatment costs of waste waters are still an obstacle for this type of technology. Thus, this study aimed to evaluate three types of pretreatments of sugarcane bagasse: diluted H2SO4 , alkaline hydrogen peroxide (APH) and hypochlorite-hydrogen peroxide (Ox-B), using high solid loadings, both in the pretreatment and the enzymatic hydrolysis step in order to reduce reagent usage and consumption of water. For all pre-treatments were carried out experimental design of three levels (3²). The pretreated material with dilute H2SO4, APH and Ox-B was subjected to enzymatic hydrolysis with 10% (w/v) solids, with enzyme load of 15 FPU/g and 25 CBU/g of residue. To the best condition pretreatment was performed with PHA studied substitution of KOH for the NaOH and Mg(OH)2 for pH adjustment to 11.5. A study of increased solids loading in the enzymatic hydrolysis was also performed (simple and fed batch) for pretreated material with the three reagents studied, and the hydrolysates subjected to fermentation with S. cerevisiae. The highest conversions obtained in the enzymatic hydrolysis to solids loading of 10% (w/v) were 60.80% for the H2SO4 76.00% for the APH, 66.9% for Ox-B. The increased of solids loading on enzymatic hydrolysis had a negative effect on conversion. The pre-treated material showed that the PHA was the best results for both the enzymatic hydrolysis and also for fermentation, reaching a maximum yield of 84.48% ethanol at 34 ° C with 20% (w/v) solids in the pre-treatment and 10% (w/v) solids in the enzymatic hydrolysis Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Costa, Aline Carvalho da, 1970- (advisor), Universidade Estadual de Campinas. Faculdade de Engenharia Química (institution), Programa de Pós-Graduação em Engenharia Química (nameofprogram), Gouveia, Vera Lucia Reis de (committee member), Tovar, Laura Plazas (committee member), Torres, Elenise Bannwart de Moraes (committee member), Rocha, George Jackson de Moraes (committee member).

Subjects/Keywords: Bagaço de cana; Pré-tratamento; Hidrólise enzimática; Fermentação; Sugarcane bagasse; Pretreatment; Enzymatic, Hydrolisis; Fermentation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Martins, Luiza Helena da Silva, 1. (2015). Avaliação de diferentes pré-tratamentos do bagaço de cana de açúcar considerando altas cargas de sólidos: Evaluation of different pretreatments of sugarcane bagasse considering high solid loads. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/266025

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Martins, Luiza Helena da Silva, 1984-. “Avaliação de diferentes pré-tratamentos do bagaço de cana de açúcar considerando altas cargas de sólidos: Evaluation of different pretreatments of sugarcane bagasse considering high solid loads.” 2015. Thesis, Universidade Estadual de Campinas. Accessed January 26, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266025.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Martins, Luiza Helena da Silva, 1984-. “Avaliação de diferentes pré-tratamentos do bagaço de cana de açúcar considerando altas cargas de sólidos: Evaluation of different pretreatments of sugarcane bagasse considering high solid loads.” 2015. Web. 26 Jan 2021.

Vancouver:

Martins, Luiza Helena da Silva 1. Avaliação de diferentes pré-tratamentos do bagaço de cana de açúcar considerando altas cargas de sólidos: Evaluation of different pretreatments of sugarcane bagasse considering high solid loads. [Internet] [Thesis]. Universidade Estadual de Campinas; 2015. [cited 2021 Jan 26]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/266025.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Martins, Luiza Helena da Silva 1. Avaliação de diferentes pré-tratamentos do bagaço de cana de açúcar considerando altas cargas de sólidos: Evaluation of different pretreatments of sugarcane bagasse considering high solid loads. [Thesis]. Universidade Estadual de Campinas; 2015. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/266025

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Estadual de Campinas

22. Xavier, Michelle da Cunha Abreu, 1985-. Lipid production from hemicellulosic hydrolysate of sugarcane bagasse and metabolic engineering of yeast Lipomyces starkeyi = Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi: Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi.

Degree: 2016, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/321474

► Abstract: Concerns about the shortage of oil reserves and climate changes have stimulate the investigation of renewable and sustainable biofuels, such as biodiesel, as alternative… (more)

▼ Abstract: Concerns about the shortage of oil reserves and climate changes have stimulate the investigation of renewable and sustainable biofuels, such as biodiesel, as alternative source to fossil fuels. Sugarcane bagasse (SCB) represents a potentially less expensive and renewable source of fermentable sugars which can be converted into biofuels and chemicals. The high cost of biodiesel production and competition with foods have shown restrictions on economic production and the microbial oil, named Single Cell Oil (SCO), has been promising alternative to for the cost-effective production of biofuels. The microbial conversion of hemicellulose fraction is essential for increased production of biofuels, and the use of microorganisms able of overcoming the difficulties related to inhibitors generated during hydrolysis of hemicellulosic fraction, are desirable for these purposes. Lipomyces starkeyi, oleaginous yeast, offers great potential to be used in biofuel and chemical production because it is able to utilize a variety of carbon sources and produce lipids. However, microbial platforms for biofuel production are challenging to culture-based production and metabolic engineering is established as enabling technology for the development of biofuels. Nevertheless, there are few genetic tools to transform L. starkeyi. Therefore, this work studied the lipid production from hemicellulosic hydrolysate of sugarcane bagasse and metabolic engineering of L. starkeyi DSM70296 to increase the lipid production. Similar kinetic profiles were observed for the xylose and HH fermentation; however, higher biomass production was obtained when L. starkeyi was cultivated in HH. Increasing the concentration of inoculum greatly increased the lipid accumulation from 29.1% to 36.8% for xylose cultivation and from 27.8% to 44.8% for HH cultivation. L. starkeyi had tolerance to furfural, acetic acid and hydroxymethylfurfural present in HH and, furthermore, these inhibitors were depleted during fermentation due the metabolism of yeast. Acetic acid cultivation showed that the yeast was able to use this inhibitor for growth (0.9 g/L) and lipid biosynthesis (28.4%). Agrobacterium tumefaciens-mediated transformation (ATMT) was the most efficient and reliable method for L. starkeyi transformation and overexpressing ACC1 (Acetyl-CoA carboxylase) and DGA1 (Diacylglycerol Acyltransferase) genes, involved in lipid biosynthesis, provided an increasing of fatty acid content, with DGA1 having the dominant effect. These results demonstrated that L. starkeyi showed robust and favorable characteristics as a promising microorganism capable of converting hemicellulosic sugar into lipids, and the possibility of change targeted gene expressions and metabolic pathways by genetic engineering would improve the lipid productivity, enabling to make this microorganism as platform for the lipid-based products Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Franco, Telma Teixeira, 1957- (advisor), Universidade Estadual de Campinas. Faculdade de Engenharia Química (institution), Programa de Pós-Graduação em Engenharia Química (nameofprogram), Basso, Thiago Olitta (committee member), Ienczak, Jaciane Lutz (committee member), Cavalett, Otavio (committee member), Brandão, Marcelo Mendes (committee member).

Subjects/Keywords: Bagaço de cana; Lipídeos; Biocombustível; Leveduras; Engenharia genética; Sugarcane bagasse; Lipids; Biofuel; Yeast; Genetic engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Xavier, Michelle da Cunha Abreu, 1. (2016). Lipid production from hemicellulosic hydrolysate of sugarcane bagasse and metabolic engineering of yeast Lipomyces starkeyi = Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi: Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/321474

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Xavier, Michelle da Cunha Abreu, 1985-. “Lipid production from hemicellulosic hydrolysate of sugarcane bagasse and metabolic engineering of yeast Lipomyces starkeyi = Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi: Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi.” 2016. Thesis, Universidade Estadual de Campinas. Accessed January 26, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/321474.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Xavier, Michelle da Cunha Abreu, 1985-. “Lipid production from hemicellulosic hydrolysate of sugarcane bagasse and metabolic engineering of yeast Lipomyces starkeyi = Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi: Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi.” 2016. Web. 26 Jan 2021.

Vancouver:

Xavier, Michelle da Cunha Abreu 1. Lipid production from hemicellulosic hydrolysate of sugarcane bagasse and metabolic engineering of yeast Lipomyces starkeyi = Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi: Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi. [Internet] [Thesis]. Universidade Estadual de Campinas; 2016. [cited 2021 Jan 26]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/321474.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Xavier, Michelle da Cunha Abreu 1. Lipid production from hemicellulosic hydrolysate of sugarcane bagasse and metabolic engineering of yeast Lipomyces starkeyi = Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi: Produção de lipídios a partir do hidrolisado hemicelulósico do bagaço de cana e engenharia metabólica da levedura Lipomyces starkeyi. [Thesis]. Universidade Estadual de Campinas; 2016. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/321474

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Federal de Viçosa

23. Carlos Joulbert Alves de Souza. Produção de etanol por sacarificação e fermentação simultâneas do bagaço de cana-de-açúcar utilizando leveduras termotolerantes.

Degree: 2011, Universidade Federal de Viçosa

URL: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3094

►

Este trabalho teve como objetivo principal analisar e comparar a produção de etanol em um processo de sacarificação e fermentação silmultâneas do bagaço de cana… (more)

▼

Este trabalho teve como objetivo principal analisar e comparar a produção de etanol em um processo de sacarificação e fermentação silmultâneas do bagaço de cana de açúcar pelas cepas S. cerevisiae LBM-1 e Kluyveromyces marxianus UFV-3. Análises de crescimentos das cepas em diferentes temperaturas mostraram que ambas cresceram nas temperaturas de 30, 37 e 42 °C e apenas a cepa K. marxianus UFV-3 cresceu na temperatura de 45 °C. Avaliou-se também a fermentação do bagaço de cana de açúcar, submetido ao pré-tratamento ácido/básico, em processos de sacarificação e fermentação simultâneas (SSF) a 37 e 42 °C, analisando-se ainda diferentes tempos de pré-hidrólise da biomassa 37, 42 e 50 °C. Os rendimentos em produção de etanol foram semelhantes tanto a 37 quanto a 42 °C para ambas as cepas. Verificou-se que o rendimento em etanol foi maior quando o bagaço foi submetido inicialmente a uma pré-hidrólise a 50 °C por 72 horas. Posteriormente foram analisados os rendimentos da fermentação em relação ao número de ciclos fermentativos. O rendimento em etanol para a cepa K. marxianus UFV-3 diminuiu no quarto ciclo e se manteve constante até o sétimo ciclo. Enquanto que para S. cerevisiae LBM- 1 o rendimento aumentou no decorrer dos ciclos. Estes resultados permitem sugerir que as duas cepas podem ser utilizadas na produção de etanol celulósico por SSF porque apresentam rendimentos em etanol estatisticamente iguais. No entanto o número de ciclos de fermentação sem perda de rendimento pela cepa K. marxinaus UFV-3 foi inferior ao da cepa LBM-1 indicando que esta seja mais adequada ao processo de produção através da batelada alimentada nas indústrias de produção de etanol.

The aim of this work was to compare the ethanol production between LBM-1 and Kluyveromyces marxianus UFV-3. The assay of thermotolerance was performed to characterize the strains as the capacity to grow at different temperatures. It was found that both grew at temperatures of 28, 37 and 42 °C. Only K. marxianus UFV-3 grew at 45 °C. It was, also, evaluated the fermentation of sugar cane bagasse, which was submitted to Acid/Alkali pretreatments, in processes of saccharification and fermentation simultaneous (SSF) at 37 and 42 °C, analyzing even different times of prehydrolysis of the biomass at 37, 42 and 50 °C. The yields of ethanol production were similar at 37 and 42 °C for both strains. It was found that the ethanol yield was higher when the bagasse was initially submitted to a hydrolysis at 50 °C for 72 hours. Thereafter was analyzed the relation between fermentation and number of cycles and it was determined the maximum number of cycles performed without loss of ethanol yield. The ethanol yield for K. marxianus UFV-3 decreases at cicle fourth and then, remained constant. The S. cerevisiae LBM-1 income increased during the cycle. These results suggest the use of two strains in the production of cellulosic ethanol by processes of SSF because they have ethanol yields statistically identical. However the number of fermentation cycles without loss of yield by strain K.…

Advisors/Committee Members: José Humberto de Queiroz, Flávia Maria Lopes Passos, Valéria Monteze Guimarães, Maurílio Alves Moreira, Luciano Gomes Fietto.

Subjects/Keywords: Etanol; Bagaço de cana-de-açúcar; Leveduras; BIOLOGIA MOLECULAR; Ethanol; Sugarcane bagasse; Yeasts

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Souza, C. J. A. d. (2011). Produção de etanol por sacarificação e fermentação simultâneas do bagaço de cana-de-açúcar utilizando leveduras termotolerantes. (Thesis). Universidade Federal de Viçosa. Retrieved from http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3094

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Souza, Carlos Joulbert Alves de. “Produção de etanol por sacarificação e fermentação simultâneas do bagaço de cana-de-açúcar utilizando leveduras termotolerantes.” 2011. Thesis, Universidade Federal de Viçosa. Accessed January 26, 2021. http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3094.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Souza, Carlos Joulbert Alves de. “Produção de etanol por sacarificação e fermentação simultâneas do bagaço de cana-de-açúcar utilizando leveduras termotolerantes.” 2011. Web. 26 Jan 2021.

Vancouver:

Souza CJAd. Produção de etanol por sacarificação e fermentação simultâneas do bagaço de cana-de-açúcar utilizando leveduras termotolerantes. [Internet] [Thesis]. Universidade Federal de Viçosa; 2011. [cited 2021 Jan 26]. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3094.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Souza CJAd. Produção de etanol por sacarificação e fermentação simultâneas do bagaço de cana-de-açúcar utilizando leveduras termotolerantes. [Thesis]. Universidade Federal de Viçosa; 2011. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3094

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Durban University of Technology

24. Mdletshe, Gcinile Pretty. Extraction and characterisation of cellulose nanocrystals (CNCs) from sugarcane bagasse using ionic liquids.

Degree: 2019, Durban University of Technology

URL: http://hdl.handle.net/10321/3219

►

Submitted in fulfillment of the academic requirements for the Master in Applied Sciences (Chemistry), Faculty of Applied Sciences, Durban University of Technology, Durban, South Africa,… (more)

▼

Submitted in fulfillment of the academic requirements for the Master in Applied Sciences (Chemistry), Faculty of Applied Sciences, Durban University of Technology, Durban, South Africa, 2019.

Lignocellulosic materials have the potential to partly replace fossil-based resources as a source of bio-fuels, bio-chemicals, bio-composites and other bio-products. In this study, ionic liquids (ILs) were used in the pre-treatment of ground sugarcane bagasse (SCB). The ILs used were 1-butyl-3-methylimidazolium hydrogen sulphate or 1-butyl-3-methylimidazolium methyl sulphate at varied times. The ILs were able to remove lignin and hemicellulose from biomass. The IL [bmim][HSO4] had the highest amount of lignin removed after 12 h than all samples. Moreover, it resulted in the greatest cellulose amount. Milled SCB was pre-treated with IL/dimethyl sulphoxide (DMSO) mixtures. The IL [bmim][HSO4] was able to produce cellulose nanocrystals (CNCs) at 90 % IL and 100 % IL. The other IL failed to produce CNCs. Freeze drying the CNC suspension showed morphologies of long fibrous structures and rods which were evident in the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images. The crystallinity index of cellulose in the form of CNCs was calculated from powder X-ray diffraction (P-XRD). Thermal analysis of the CNCs was obtained from thermogravimetric analysis (TGA). Attenuated total reflection-Fourier transform infrared (ATR-FTIR) was used to confirm the absence of lignin and hemicellulose in CNCs. The size distribution of CNCs was obtained by using a dynamic light scattering (DLS) which showed that all the CNCs for the 100 % IL [bmim][HSO4] pre-treatment had a length < 500 nm. It was found that [bmim][HSO4], with no DMSO, was the most effective in terms of cellulose dissolution and the crystal sizes of CNCs. The conversion of cellulose to CNCs was successful with a 80 % and 100 % conversion for 90 % [bmim][HSO4]/DMSO and 100 % [bmim][HSO4], respectively.

M

Advisors/Committee Members: Deenadayalu, Nirmala, Suprakas, Prof. S..

Subjects/Keywords: Cellulose nanocrystals; Extraction (Chemistry); Cellulose – Chemistry; Bagasse; Sugarcane products; Ionic solutions; Biomass

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mdletshe, G. P. (2019). Extraction and characterisation of cellulose nanocrystals (CNCs) from sugarcane bagasse using ionic liquids. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/3219

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mdletshe, Gcinile Pretty. “Extraction and characterisation of cellulose nanocrystals (CNCs) from sugarcane bagasse using ionic liquids.” 2019. Thesis, Durban University of Technology. Accessed January 26, 2021. http://hdl.handle.net/10321/3219.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mdletshe, Gcinile Pretty. “Extraction and characterisation of cellulose nanocrystals (CNCs) from sugarcane bagasse using ionic liquids.” 2019. Web. 26 Jan 2021.

Vancouver:

Mdletshe GP. Extraction and characterisation of cellulose nanocrystals (CNCs) from sugarcane bagasse using ionic liquids. [Internet] [Thesis]. Durban University of Technology; 2019. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10321/3219.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mdletshe GP. Extraction and characterisation of cellulose nanocrystals (CNCs) from sugarcane bagasse using ionic liquids. [Thesis]. Durban University of Technology; 2019. Available from: http://hdl.handle.net/10321/3219

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Estadual de Campinas

25. Vicente, Viviane Marcos Nascimento, 1986-. Hidrolisado hemicelulósico : destoxificação, caracterização dos compostos fenólicos e avaliação do processo fermentativo para produção de E2G = Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol: Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol.

Degree: 2020, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/351736

► Abstract: The hemicellulosic hydrolysate fermentability still present innumerous technological challenges in terms of yield, mainly due structural complexity of inhibitory compounds. The objective of this… (more)

▼ Abstract: The hemicellulosic hydrolysate fermentability still present innumerous technological challenges in terms of yield, mainly due structural complexity of inhibitory compounds. The objective of this work was to study the detoxification process of the hemicellulosic hydrolysate, obtained after dilute sulfuric acid pre-treatment of sugarcane bagasse, aiming the extraction of organic acids, furanic aldehydes and phenolic compounds, besides fermentability of the non-detoxified and detoxified hydrolysate evaluation by S. stipitis and S. passalidarum in shaker and laboratory biorreactor. In addition, a systematic characterization of the phenolic compounds from organic and water fractions were carried out. The detoxification addressed an evaporation step, followed by liquid-liquid extraction, using fourteen solvents as alcohols, ketones, ethers and biodiesel. Evaporation, under pH 1,7 resulted in 16.0 ± 0.8 % formic acid, 65.0 ± 1.0 % acetic acid, and 13.0 ± 0.5 % HMF, 98.0 ± 0.9 % of furfural and 34.0 ± 0.77 % of the phenolic content removals, without expressive carbohydrate loss for the distillate. The highest inhibitors efficiency extractions were achieved for alcohols. In contrast, these solvents resulted in cell growth inhibition both S. stipitis and S. passalidarum, with accumulation of 70.9 ± 1.70 % and 56.0 ± 2.27 % of residual reducing sugars in 48 hours of fermentation, for butanol. MIBK, MTBE and DIBK resulted in improvements in ethanol volumetric productivity in the range of 85-90 % for S. stipitis and around 34% in relation to the evaporated hydrolysate for S. passalidarum. The extracted compounds showed low molar mass, with a maximum value of Mw of 725 g /mol and typical signals from p-coumarates and ferulates structures. The evaporated hydrolysate presented majority concentrations of 4-hydroxycinnamic acid (0.5 g/L), 4-hydroxyacetophenone (0.3 g/L) and 4-hydroxybenzaldehyde (0.2 g/L). MIBK was the selected solvent and resulted in 36 % of compounds removal (detected from UPLC-MSMS), with the majority under 400 g/mol. MIBK extracted from hydrolysate all evaluated standards, excepted for ferulic and trans-ferulic acids, with 0,01g/L of residual concentrations. The preliminary assessment of inhibitors structures and fermentative performance pointed a sinergic relation of ferrulates and acetic acid (above 2 g/L), resulting in both yeasts inhibition Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Maciel Filho, Rubens, 1958- (advisor), Rabelo, Sarita Cândida (coadvisor), Universidade Estadual de Campinas. Faculdade de Engenharia Química (institution), Programa de Pós-Graduação em Engenharia Química (nameofprogram), Costa, Aline Carvalho da (committee member), Gonçalves, Adilson Roberto (committee member), Atala, Daniel Ibraim Pires (committee member), Andrade, Rafael Ramos de (committee member).

Subjects/Keywords: Bagaço de cana; Lignina; Pentoses - Metabolismo; Etanol 2G; Sugarcane bagasse; Lignin; Pentoses - Metabolism; 2G ethanol

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vicente, Viviane Marcos Nascimento, 1. (2020). Hidrolisado hemicelulósico : destoxificação, caracterização dos compostos fenólicos e avaliação do processo fermentativo para produção de E2G = Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol: Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/351736

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Vicente, Viviane Marcos Nascimento, 1986-. “Hidrolisado hemicelulósico : destoxificação, caracterização dos compostos fenólicos e avaliação do processo fermentativo para produção de E2G = Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol: Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol.” 2020. Thesis, Universidade Estadual de Campinas. Accessed January 26, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/351736.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vicente, Viviane Marcos Nascimento, 1986-. “Hidrolisado hemicelulósico : destoxificação, caracterização dos compostos fenólicos e avaliação do processo fermentativo para produção de E2G = Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol: Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol.” 2020. Web. 26 Jan 2021.

Vancouver:

Vicente, Viviane Marcos Nascimento 1. Hidrolisado hemicelulósico : destoxificação, caracterização dos compostos fenólicos e avaliação do processo fermentativo para produção de E2G = Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol: Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol. [Internet] [Thesis]. Universidade Estadual de Campinas; 2020. [cited 2021 Jan 26]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/351736.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vicente, Viviane Marcos Nascimento 1. Hidrolisado hemicelulósico : destoxificação, caracterização dos compostos fenólicos e avaliação do processo fermentativo para produção de E2G = Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol: Hemicellulosic hydrolysate : detoxification, phenolics characterization and fermentability evaluation for 2G ethanol. [Thesis]. Universidade Estadual de Campinas; 2020. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/351736

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Louisiana State University

26. Cao, Shuo. Effect of surfactants on the pretreatment of sugarcane bagasse with dilute ammonia.

Degree: MS, Life Sciences, 2012, Louisiana State University

URL: etd-11112012-190037 ; https://digitalcommons.lsu.edu/gradschool_theses/1081

► Lignocellulosic biomass is composed of cellulose, hemicellulose and lignin which are not readily available for conversion in their native form. It is widely accepted that… (more)

▼ Lignocellulosic biomass is composed of cellulose, hemicellulose and lignin which are not readily available for conversion in their native form. It is widely accepted that lignin acts as the “glue” that binds cellulose and hemicellulose, giving rigidity and resistance to lignocellulose. The use of non-ionic surfactants during pretreatment can help alter the structure of lignocellulosic biomass to improve cellulose digestibility and ethanol yields. Tween 80, Tween 20, PEG 4000, or PEG 6000 was used with ammonium hydroxide for the pretreatment of sugarcane bagasse. The pretreatment was carried out by mixing sugarcane bagasse, ammonium hydroxide (28% v/v) and water at a ratio of 1: 0.5: 20, adding 3% (w/w) surfactant based on the weight of dry biomass, and heating the mixture to 160 °C for 1 h. The final concentration of ammonium hydroxide was 0.65% w/w at 4.7% solids loading. Chemical compositions were determined before and after pretreatment. Fibers were hydrolyzed using commercial enzymes, Spezyme CP and Novozyme 188. Fermentable sugars and ethanol concentrations were analyzed by HPLC. The results indicated that PEG 4000 and Tween 80 gave the highest cellulose digestibilities (62%, 66%) and ethanol yields (73%, 69 %), respectively. Tween 80 was selected over PEG 4000 because of its low cost. The effect of two concentrations of ammonium hydroxide 0.26% w/w (1: 0.2: 20, biomass: ammonium hydroxide: water ratio) and 0.65% w/w (1: 0.5: 20, biomass: ammonium hydroxide: water ratio), and Tween 80 (1.5%, 3% and 5% w/w, based on the weight of dry biomass) were evaluated during pretreatment at 4.7% solids loading. The greatest lignin removal (37%), cellulose digestibility (66%) and hemicellulose digestibility (43%) were observed at 1: 0.5: 20 ratio supplemented with 3% (w/w) Tween 80. These pretreatment parameters were selected for scale-up experiments at a higher solids loading (10.5%) in a 20 L bioreactor. The greatest lignin removal (55%), cellulose digestibility (72%) and hemicellulose digestibility (57%) were observed with 3% Tween 80-dilute ammonia pretreatment at 1: 0.5: 8 ratio with a final concentration of ammonium hydroxide of 1.47% w/w. Morphological changes in the structure of non-ionic surfactant-dilute ammonia pretreated sugarcane bagasse were observed.

Subjects/Keywords: Enzyme hydrolysis; Sugarcane bagasse; Dilute ammonia pretreatment; Tween 80; Non-ionic surfactant

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cao, S. (2012). Effect of surfactants on the pretreatment of sugarcane bagasse with dilute ammonia. (Masters Thesis). Louisiana State University. Retrieved from etd-11112012-190037 ; https://digitalcommons.lsu.edu/gradschool_theses/1081

Chicago Manual of Style (16^th Edition):

Cao, Shuo. “Effect of surfactants on the pretreatment of sugarcane bagasse with dilute ammonia.” 2012. Masters Thesis, Louisiana State University. Accessed January 26, 2021. etd-11112012-190037 ; https://digitalcommons.lsu.edu/gradschool_theses/1081.

MLA Handbook (7^th Edition):

Cao, Shuo. “Effect of surfactants on the pretreatment of sugarcane bagasse with dilute ammonia.” 2012. Web. 26 Jan 2021.

Vancouver:

Cao S. Effect of surfactants on the pretreatment of sugarcane bagasse with dilute ammonia. [Internet] [Masters thesis]. Louisiana State University; 2012. [cited 2021 Jan 26]. Available from: etd-11112012-190037 ; https://digitalcommons.lsu.edu/gradschool_theses/1081.

Council of Science Editors:

Cao S. Effect of surfactants on the pretreatment of sugarcane bagasse with dilute ammonia. [Masters Thesis]. Louisiana State University; 2012. Available from: etd-11112012-190037 ; https://digitalcommons.lsu.edu/gradschool_theses/1081

Universidade Estadual de Campinas

27. Lopes, Emília Savioli, 1989-. Otimização da produção e obtenção do ácido levulínico a partir do bagaço e melaço de cana-de-açúcar : Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses: Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses.

Degree: 2019, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/336707

► Abstract: Levulinic acid (LA), a high value-added product, can modulate the concept of biorefinery as a driver of the emerging bioindustry, as shown in the… (more)

▼ Abstract: Levulinic acid (LA), a high value-added product, can modulate the concept of biorefinery as a driver of the emerging bioindustry, as shown in the first Thesis approach: "Learning through experience" (Chapter 2). LA is obtained by catalytic processes using as a substrate, for example, by-products from agro-industry. To this end, this Thesis addressed the construction of a reactor to obtain LA (Chapter 3) through byproducts of sugarcane agroindustry: bagasse-SCB and molasses-SCM. The reactor is composed of two stainless steel vessels (300 mL internal volume), with a pressure control system and an electric resistance heating system. The reactor performance evaluation allowed to define operating limits of 200 °C and 20 bar. In order to consolidate kinetic mechanisms, including a wide range of conditions, SCB was deconstructed in the presence of hydrogenation catalysts. The analysis of kinetic parameters was performed in LA and intermediate and side reactions to glucose, 5-HMF and humins (HUs) on acid catalysis (150-190 °C/0-75 min/liquid:solid ratio=10/3,0 - 7.0% w/v H2SO4) (Chapter 4). Synergy with other potential agroindustry residues (rice husk (RH) and soybean straw (SS)) defined attractive LA yields of 61.1 mol%, 67.7 mol%, 61.4 mol% (190 °C/7% w/v H2SO4/75 min) for cellulosic materials from SCB, RH and SS. Thus, the opportunity for growth of LA has been proved by integrating the use of three biomasses, which can be used under advantageous conditions, given their availability and seasonal pattern with complementary harvest periods. Taking into account that byproduct-driven sustainability leads to high value-added products (Chapter 5), a process optimization involving 3-step biorefining (pretreatment, delignification and conversion of acid-catalyzed of cellulose) was then performed. The LA concentration of ~25 g/L was obtained under the optimized conditions of the third step (180 °C/75 min/7.0% w/v H2SO4/12.0% w/v solid loading). In addition to the previous one, in Chapter 5, a scenario assessment is carried out defining opportunities and challenges for other by-products (the HUs) with 13.3 kg/100kgBCA production, although relatively low, when compared with an acid-catalyzed decomposition strategy (1 and 2 stages of biorefining) and hydrothermal decomposition (non-catalytic). Given the great interest of AL and the potential of SCM, important contributions were obtained by investigating, in Chapter 6, different catalytic mixtures of SCM and reaction medium (H2SO4 acid solution). Relatively high AL concentrations (> 142 g/L at 185 °C, 9% w/v H2SO4 and 10:20/3 acid-to-MCA volume ratio) set a new level of opportunity where SCM can be included in the sugarcane agribusiness value chain with yields > 80%. Thus, in the near future, decision-making and identification of opportunities in existing and potential markets may rethink the value chain of the sugarcane agroindustry in synergy with the food agroindustry (rice and soybean) Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Maciel Filho, Rubens, 1958- (advisor), Tovar, Laura Plazas (coadvisor), Universidade Estadual de Campinas. Faculdade de Engenharia Química (institution), Programa de Pós-Graduação em Engenharia Química (nameofprogram), Mariano, Adriano Pinto (committee member), Gonçalves, Adilson Roberto (committee member), Lunelli, Betânia Hoss (committee member), Rocha, George Jackson de Moraes (committee member).

Subjects/Keywords: Bagaço de cana; Pré-tratamento; Hidrólise ácida; Sugarcane bagasse; Pretreatment; Acid hydrolysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lopes, Emília Savioli, 1. (2019). Otimização da produção e obtenção do ácido levulínico a partir do bagaço e melaço de cana-de-açúcar : Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses: Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/336707

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lopes, Emília Savioli, 1989-. “Otimização da produção e obtenção do ácido levulínico a partir do bagaço e melaço de cana-de-açúcar : Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses: Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses.” 2019. Thesis, Universidade Estadual de Campinas. Accessed January 26, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/336707.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lopes, Emília Savioli, 1989-. “Otimização da produção e obtenção do ácido levulínico a partir do bagaço e melaço de cana-de-açúcar : Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses: Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses.” 2019. Web. 26 Jan 2021.

Vancouver:

Lopes, Emília Savioli 1. Otimização da produção e obtenção do ácido levulínico a partir do bagaço e melaço de cana-de-açúcar : Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses: Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses. [Internet] [Thesis]. Universidade Estadual de Campinas; 2019. [cited 2021 Jan 26]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/336707.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lopes, Emília Savioli 1. Otimização da produção e obtenção do ácido levulínico a partir do bagaço e melaço de cana-de-açúcar : Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses: Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses. [Thesis]. Universidade Estadual de Campinas; 2019. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/336707

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Michel, Davina. Evaluation du potential fibreux et textile de la canne à sucre (Saccharum officinarum L.) : Evaluation of the fibrous and textile potential of sugarcane (Saccharum officinarum L.).

Degree: Docteur es, Mécanique, 2013, Mulhouse

URL: http://www.theses.fr/2013MULH6113

►

Ce travail de thèse porte sur l’extraction et la caractérisation mécanique des fibres de canne à sucre. A partir de la bagasse de canne à… (more)

▼

Ce travail de thèse porte sur l’extraction et la caractérisation mécanique des fibres de canne à sucre. A partir de la bagasse de canne à sucre, résidu fibreux de l’industrie sucrière, des techniques d’extractions sont mises en place afin d’extraire des fibres techniques, dont l’analyse des propriétés chimiques et physico-mécaniques définira par la suite, les domaines d’application textile possibles. Les fibres de canne obtenues ont d’abord été étudiées d’un point de vue physique et morphologique, à partir de mesures et d’observations de leurs sections et de leurs profils. Ainsi, l’analyse de la distribution en diamètre et en longueur des fibres ont été étudiés avec l’établissement de paramètres de centrage barbe et hauteur (longueur pondérée à la masse), ont permis de déterminer leurs tailles moyennes, leurs finesses et leurs dispersions tout en vérifiant l’effet des conditions de traitement. Ont ainsi été obtenus différents types de fibres, présentant des propriétés mécaniques (en flexion et en traction) variées en relation avec les changements de structure dus à l’extraction. Les performances mécaniques de ces fibres restent comparables aux autres fibres naturelles, confirmant ainsi leur potentiel textile. Une première piste de valorisation de ces fibres a été envisagée lors de la fabrication d’un fil de canne à sucre. Des essais de filature ont ainsi été menés sur micro-filature, en 100% fibres de canne mais aussi en mélange 30-70% coton/bagasse.Enfin, une introduction à l’approche environnementale basée sur l’analyse de cycle de vie, a été succinctement abordée, ouvrant le champ à d’autres études. Les résultats montrent que le potentiel textile de la canne à sucre est quantifiable, et que ses fibres extractibles, sont comparables à d’autres fibres naturelles non conventionnelles utilisés dans le domaine textile.

This doctoral dissertation deals with extraction and mechanical characterization of sugarcane fibers. From bagasse, the fibrous residue left from the sugar mill, several extraction conditions were investigated in order to extract technical sugarcane fibers. At first, morphological and physical characterization were analyzed, based on their sections and longitudinal profiles. Thus, mean size, fiber fineness and scattering were studied regarding adjusting parameters barbe and hauteur, for the fiber length distribution as weighted mean. Different types of technical fibers were obtained and their mechanical characterization as bending and tensile properties linked with the extraction conditions. Mechanical performances of the extracted fibers are common to other natural fibers that confirm their textile potential. To valorize these fibers, some experiments were conducted by producing sugarcane yarn. A micro-spinning were piloted for a 100% bagasse and 30/70% cotton/bagasse yarn made. Finally, an introduction to an environmental approach was analyzed, based on the lifecycle analysis from the sugarcane culture to the fiber extraction, opening new perspectives to study. The results show that good fibers can…

Advisors/Committee Members: Harzallah, Omar Anis (thesis director).

Subjects/Keywords: Canne à sucre; Saccharum officinarum L.; Bagasse; Extraction de fibre; Lignine; Caractérisation; Flexion; Traction; Sugarcane; Saccharum officinarum L.; Bagasse; Fiber extraction; Lignin; Characterization; Bending property; Tensile property; 677

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Michel, D. (2013). Evaluation du potential fibreux et textile de la canne à sucre (Saccharum officinarum L.) : Evaluation of the fibrous and textile potential of sugarcane (Saccharum officinarum L.). (Doctoral Dissertation). Mulhouse. Retrieved from http://www.theses.fr/2013MULH6113

Chicago Manual of Style (16^th Edition):

Michel, Davina. “Evaluation du potential fibreux et textile de la canne à sucre (Saccharum officinarum L.) : Evaluation of the fibrous and textile potential of sugarcane (Saccharum officinarum L.).” 2013. Doctoral Dissertation, Mulhouse. Accessed January 26, 2021. http://www.theses.fr/2013MULH6113.

MLA Handbook (7^th Edition):

Michel, Davina. “Evaluation du potential fibreux et textile de la canne à sucre (Saccharum officinarum L.) : Evaluation of the fibrous and textile potential of sugarcane (Saccharum officinarum L.).” 2013. Web. 26 Jan 2021.

Vancouver:

Michel D. Evaluation du potential fibreux et textile de la canne à sucre (Saccharum officinarum L.) : Evaluation of the fibrous and textile potential of sugarcane (Saccharum officinarum L.). [Internet] [Doctoral dissertation]. Mulhouse; 2013. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2013MULH6113.

Council of Science Editors:

Michel D. Evaluation du potential fibreux et textile de la canne à sucre (Saccharum officinarum L.) : Evaluation of the fibrous and textile potential of sugarcane (Saccharum officinarum L.). [Doctoral Dissertation]. Mulhouse; 2013. Available from: http://www.theses.fr/2013MULH6113

29. Ratiarisoa, Rijaniaina. Valorisation de résidus agroindustriels comme matériaux pour l'habitat et la construction : utilisation de la bagasse dans les liants composés minéraux et les composites : Valorization agroindustrial wastes as housing and building materials : use of bagasse in composed binders and composite materials.

Degree: Docteur es, Chimie des matériaux, 2018, Antilles; Universidade Luterana do Brasil (Canoas, Rio Grande do Sul, Brazil)

URL: http://www.theses.fr/2018ANTI0265

►

La présente étude vise à valoriser des résidus agroindustriels comme matériaux pour l’habitat et la construction. Dans ce contexte, les travaux de recherche s’articulent autour… (more)

▼

La présente étude vise à valoriser des résidus agroindustriels comme matériaux pour l’habitat et la construction. Dans ce contexte, les travaux de recherche s’articulent autour de deux axes majeurs : le développement d’un liant alternatif et l’élaboration de matériaux composites à partir de ce liant alternatif et des matériaux végétaux. Deux liants composés utilisant des cendres de bagasse, nommés cendres de bagasse-chaux et ciment-cendres de bagasse ont été étudiés. A partir de ces liants composés, deux types de matériaux composites incluant des matériaux végétaux ont été élaborés : un composite incorporant des granulats de bagasse et de coco et un autre renforcé par des pulpes d’eucalyptus. Les propriétés physiques, chimiques, mécaniques et hydriques de ces matériaux ont été déterminées. Les résultats obtenus montrent que la calcination des cendres de bagasse à 600°C et la sélection des particules de taille inférieure à un diamètre seuil compris entre 45 et 63µm augmentent sa réactivité. Le liant composé cendres de bagasse-chaux est susceptible de développer une résistance à la compression de l’ordre de 39MPa à 28 jours, une valeur supérieure à celle des liants composés matériaux pouzzolaniques-chaux étudiés dans la littérature. Grace à sa faible alcalinité, ce liant composé préserve mieux les matériaux végétaux vis à vis de leur minéralisation et leur fragilisation comparativement au liant à base de ciment. L’incorporation de pulpes cellulosiques dans le liant composé cendres de bagasse-chaux permet d’obtenir des matériaux composites ayant des propriétés à la flexion comparables à celles d’un composite ciment-pulpes cellulosiques.

The present study aims to add value to agroindustrial residues as housing and building materials. In this context, the research works revolve around two main lines: the development of an alternative binder using agroindustrial residues and the production of composite materials from this alternative binder and plant resources. Two composed binder using bagasse ash, named bagasse ash lime and cement-bagasse ash, were optimised and produced. Using these composed binder, two kinds of composite materials including plant resources were produced: one composite developed with vegetable aggregates and another one reinforced with eucalyptus pulps. The physical, chemical, mechanical and hydric properties of these materials were investigated. The results show that the bagasse ash recalcination at 600 °C and the selection of the particles under a diameter limit (between 45 and 63 µm) improve its reactivity. Blended with slaked lime, the composed binder obtained with these parameters is likely to develop a compressive strength higher than 39 MPa at 28 days; this value is higher than the compressive strength of pouzzolanic material and lime based binder studied in the literature. In addition, due to the lower alkalinity of the interstitial solution of this composed binder, related to the lime consumption by the pouzzolanic material, it better protects vegetable materials from mineralization than the…

Advisors/Committee Members: Arsène, Marie-Ange (thesis director), Junior, Holmer Savastano (thesis director).

Subjects/Keywords: Matériaux pouzzolaniques; Cendres de bagasse; Liants composés; Granulats végétaux; Pulpes cellulosiques; Durabilité; Pozzolanic materials; Sugarcane bagasse ash; Composed binders; Vegetable aggregates; Cellulosic pulps; Cellulosic pulps; 620

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ratiarisoa, R. (2018). Valorisation de résidus agroindustriels comme matériaux pour l'habitat et la construction : utilisation de la bagasse dans les liants composés minéraux et les composites : Valorization agroindustrial wastes as housing and building materials : use of bagasse in composed binders and composite materials. (Doctoral Dissertation). Antilles; Universidade Luterana do Brasil (Canoas, Rio Grande do Sul, Brazil). Retrieved from http://www.theses.fr/2018ANTI0265

Chicago Manual of Style (16^th Edition):

Ratiarisoa, Rijaniaina. “Valorisation de résidus agroindustriels comme matériaux pour l'habitat et la construction : utilisation de la bagasse dans les liants composés minéraux et les composites : Valorization agroindustrial wastes as housing and building materials : use of bagasse in composed binders and composite materials.” 2018. Doctoral Dissertation, Antilles; Universidade Luterana do Brasil (Canoas, Rio Grande do Sul, Brazil). Accessed January 26, 2021. http://www.theses.fr/2018ANTI0265.

MLA Handbook (7^th Edition):

Ratiarisoa, Rijaniaina. “Valorisation de résidus agroindustriels comme matériaux pour l'habitat et la construction : utilisation de la bagasse dans les liants composés minéraux et les composites : Valorization agroindustrial wastes as housing and building materials : use of bagasse in composed binders and composite materials.” 2018. Web. 26 Jan 2021.

Vancouver:

Ratiarisoa R. Valorisation de résidus agroindustriels comme matériaux pour l'habitat et la construction : utilisation de la bagasse dans les liants composés minéraux et les composites : Valorization agroindustrial wastes as housing and building materials : use of bagasse in composed binders and composite materials. [Internet] [Doctoral dissertation]. Antilles; Universidade Luterana do Brasil (Canoas, Rio Grande do Sul, Brazil); 2018. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2018ANTI0265.

Council of Science Editors:

Ratiarisoa R. Valorisation de résidus agroindustriels comme matériaux pour l'habitat et la construction : utilisation de la bagasse dans les liants composés minéraux et les composites : Valorization agroindustrial wastes as housing and building materials : use of bagasse in composed binders and composite materials. [Doctoral Dissertation]. Antilles; Universidade Luterana do Brasil (Canoas, Rio Grande do Sul, Brazil); 2018. Available from: http://www.theses.fr/2018ANTI0265

Queensland University of Technology

30. Greenwood, Ava A. Mathematical modelling of the dilute acid pretreatment of sugarcane bagasse.

Degree: 2016, Queensland University of Technology

URL: http://eprints.qut.edu.au/93372/

► Dilute acid pretreatment is a process that is used to enhance ethanol yields in biofuel manufacturing by removing hemicelluloses from plant biomass. This thesis presents… (more)

Subjects/Keywords: Pretreatment; Hemicellulose; Dilute acid hydrolysis; Sugarcane bagasse; Mathematical modelling; Kinetics; Hard-to-hydrolyse; Biphasic; Polymer degradation; Population balances

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Greenwood, A. A. (2016). Mathematical modelling of the dilute acid pretreatment of sugarcane bagasse. (Thesis). Queensland University of Technology. Retrieved from http://eprints.qut.edu.au/93372/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Greenwood, Ava A. “Mathematical modelling of the dilute acid pretreatment of sugarcane bagasse.” 2016. Thesis, Queensland University of Technology. Accessed January 26, 2021. http://eprints.qut.edu.au/93372/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Greenwood, Ava A. “Mathematical modelling of the dilute acid pretreatment of sugarcane bagasse.” 2016. Web. 26 Jan 2021.

Vancouver:

Greenwood AA. Mathematical modelling of the dilute acid pretreatment of sugarcane bagasse. [Internet] [Thesis]. Queensland University of Technology; 2016. [cited 2021 Jan 26]. Available from: http://eprints.qut.edu.au/93372/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Greenwood AA. Mathematical modelling of the dilute acid pretreatment of sugarcane bagasse. [Thesis]. Queensland University of Technology; 2016. Available from: http://eprints.qut.edu.au/93372/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations