You searched for subject:(Butanol).
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204 total matches.
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1.
Calderón Navarro, Esteban.
Estudio de producción del butanol para su uso como combustible en remplazo del gasohol.
Degree: 2019, Universidad Nacional de Ingeniería
URL: http://cybertesis.uni.edu.pe/handle/uni/19766 
► El objetivo del trabajo es evaluar y proponer un proceso para la producción de n-butanol a partir de etanol usando catalizadores en base a rutenio.…
(more)
▼ El objetivo del trabajo es evaluar y proponer un proceso para la producción de n-butanol a partir de etanol usando catalizadores en base a rutenio.
El objetivo de la producción del butanol es el abastecimiento de combustibles más limpios en base a fuentes renovables.
El proceso propuesto consta de las partes básicas: el etanol debe ser llevado a las condiciones apropiadas para la conversión a butanol (calentamiento y presurización), luego de la conversión (en un reactor) se debe realizar la separación del butanol producido (junto con otros subproductos más pesados), del etanol que no logró reaccionar y del agua producida. El flujo que contiene el etanol y el agua se llevan a otra etapa de separación para recuperar buena parte del etanol que no haya reaccionado para luego recircularlo hacia el reactor.
El costo del proyecto es ligeramente superior a los 60 MUS$ para producir unas 70 mil toneladas métricas anuales de butanol (y más pesados).
The objective of the work is to propose and evaluate a process for the production of n-butanol from ethanol using catalysts based on ruthenium.
The objective of the production of butanol is the supply of cleaner fuels based on renewable sources.
The proposed process consists of the basic parts: the ethanol must be brought to the appropriate conditions for the conversion to butanol (heating and pressurization), after the conversion (in a reactor) the separation of the butanol produced must be carried out (together with other heavier byproducts), the ethanol that failed to react and the water produced. The flow containing the ethanol and the water are taken to another separation stage to recover a good part of the ethanol that has not reacted and then recirculate it to the reactor.
The cost of the project is slightly higher than 60 MUS$ to produce about 70 thousand annual metric tons of butanol (and heavier).
Subjects/Keywords: Butanol; Producción de butanol; Gasohol
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APA (6th Edition):
Calderón Navarro, E. (2019). Estudio de producción del butanol para su uso como combustible en remplazo del gasohol. (Thesis). Universidad Nacional de Ingeniería. Retrieved from http://cybertesis.uni.edu.pe/handle/uni/19766
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Calderón Navarro, Esteban. “Estudio de producción del butanol para su uso como combustible en remplazo del gasohol.” 2019. Thesis, Universidad Nacional de Ingeniería. Accessed April 15, 2021.
http://cybertesis.uni.edu.pe/handle/uni/19766.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Calderón Navarro, Esteban. “Estudio de producción del butanol para su uso como combustible en remplazo del gasohol.” 2019. Web. 15 Apr 2021.
Vancouver:
Calderón Navarro E. Estudio de producción del butanol para su uso como combustible en remplazo del gasohol. [Internet] [Thesis]. Universidad Nacional de Ingeniería; 2019. [cited 2021 Apr 15].
Available from: http://cybertesis.uni.edu.pe/handle/uni/19766.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Calderón Navarro E. Estudio de producción del butanol para su uso como combustible en remplazo del gasohol. [Thesis]. Universidad Nacional de Ingeniería; 2019. Available from: http://cybertesis.uni.edu.pe/handle/uni/19766
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universidade Estadual de Campinas
2.
Santos, Graciete Mary dos, 1982-.
Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano.
Degree: Faculdade de Engenharia Agrícola; Programa de Pós-Graduação em Engenharia Agrícola, 2015, Universidade Estadual de Campinas
URL: SANTOS,
Graciete
Mary
dos.
Efeito
da
vinhaça
na
produção
biológica
de
álcoois
e
ácidos
orgânicos
voláteis
por
meio
de
consórcio
microbiano.
2015.
135
p.
Dissertação
(mestrado)
-
Universidade
Estadual
de
Campinas,
Faculdade
de
Engenharia
Agrícola,
Campinas,
SP.
Disponível
em:
<http://www.repositorio.unicamp.br/handle/REPOSIP/304712>.
Acesso
em:
30
ago.
2018.
;
http://repositorio.unicamp.br/jspui/handle/REPOSIP/304712
► Orientadores: Ariovaldo José da Silva, Bruna de Souza Moraes
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola
Made available in DSpace on…
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▼ Orientadores: Ariovaldo José da Silva, Bruna de Souza Moraes
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola
Made available in DSpace on 2018-08-30T07:46:17Z (GMT). No. of bitstreams: 1 Santos_GracieteMarydos_M.pdf: 3271887 bytes, checksum: 539f68130eb11eac441d2bca07c2e7da (MD5) Previous issue date: 2015
Resumo: No Brasil, o efluente industrial produzido em maior quantidade é a vinhaça, caracterizada por altos níveis de ácidos orgânicos, fósforo, cálcio, potássio e magnésio. O reaproveitamento energético da vinhaça mostra-se como uma alternativa interessante para produção de biocombustíveis ou sub-produtos. Este trabalho avaliou o potencial da vinhaça como fonte de substrato e nutrientes para produção de álcoois e ácidos orgânicos voláteis (AOV) por meio fermentação em batelada utilizando consórcio anaeróbio (lodo de bovinocultura) pré-tratados com choque térmico (TT) e choque ácido-térmico
(AT). Foram utilizados dois meios diferentes, de sacarose (S) e de vinhaça (V), sendo a sacarose a principal fonte de carbono. A vinhaça provou ser uma excelente fonte de nutrientes para os microrganismos envolvidos na fermentação butírica, uma vez que a adição de vinhaça melhora significativamente a produção de ácido butírico em comparação com meio de cultura sintético. As máximas concentrações de ácido butírico, iso-butírico e acético foram de 14,13 ± 0,77 g L-1 na amostra ATV B3; 10,34 ± 0,43 g L-1na amostra ATV B2 e; 4,13 ± 0,06 g L-1na amostra TTV B3, respectivamente. O rendimento dos AOV acético, iso-butírico e butírico e de etanol foi mais elevado nas amostras ATV B3 e TTV B3, atingindo valores máximos de 0,14; 0,28; 0,69 e; 0,26 g g-1 carboidratos totais, respectivamente. Não foram encontradas diferenças significativas entre métodos de pré-tratamento e enriquecimento de inóculo, AT e TT no que diz respeito a produção de ácido butírico e etanol. Em escala maior, operando em
reator de 1,5 L, a fermentação de vinhaça bruta e melado de cana por consórcio microbiano AU mostrou potencial para produção de solventes como o butanol, uma vez que concentrações elevadas de ácido butírico foram produzidas, com concentração máxima, rendimento e produtividade de 13,85 g L-1; 0,64 g g-1 e; 199,98 mg L h-1, respectivamente. A caracterização microbiológica, pirosequenciamento, revelou a ocorrência em maior abundância de bactérias do gênero Clostridium, principalmente no consórcio AU e Lactobacillus mais abundante nos consórcios TT e AT. Foi identificada uma espécie conhecida pela produção de butanol, o C. pasteurianum no consórcio AU. Contudo, o presente trabalho representa um passo importante no desenvolvimento de um processo industrial para reutilização da vinhaça. A exploração de novos microrganismos e estudo dos fatores que interferem no processo de fermentação como pH, temperatura, nutrientes, densidade da cultura, cargas aplicadas e características do substrato,
são fundamentais para o entendimento dos efeitos sinérgicos e antagônicos da associação de culturas
In Brazil,…
Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS, Silva, Ariovaldo José da, 1966-, Zaiat, Marcelo, Mariano, Adriano Pinto.
Subjects/Keywords: Butanol; Fermentação; Butanol; Fermentation
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APA (6th Edition):
Santos, Graciete Mary dos, 1. (2015). Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano. (Masters Thesis). Universidade Estadual de Campinas. Retrieved from SANTOS, Graciete Mary dos. Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano. 2015. 135 p. Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/304712>. Acesso em: 30 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/304712
Chicago Manual of Style (16th Edition):
Santos, Graciete Mary dos, 1982-. “Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano.” 2015. Masters Thesis, Universidade Estadual de Campinas. Accessed April 15, 2021.
SANTOS, Graciete Mary dos. Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano. 2015. 135 p. Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/304712>. Acesso em: 30 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/304712.
MLA Handbook (7th Edition):
Santos, Graciete Mary dos, 1982-. “Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano.” 2015. Web. 15 Apr 2021.
Vancouver:
Santos, Graciete Mary dos 1. Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano. [Internet] [Masters thesis]. Universidade Estadual de Campinas; 2015. [cited 2021 Apr 15].
Available from: SANTOS, Graciete Mary dos. Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano. 2015. 135 p. Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/304712>. Acesso em: 30 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/304712.
Council of Science Editors:
Santos, Graciete Mary dos 1. Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano. [Masters Thesis]. Universidade Estadual de Campinas; 2015. Available from: SANTOS, Graciete Mary dos. Efeito da vinhaça na produção biológica de álcoois e ácidos orgânicos voláteis por meio de consórcio microbiano. 2015. 135 p. Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/304712>. Acesso em: 30 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/304712
University of British Columbia
3.
Esplen, Robert William.
Thermodynamic properties of n-butanol.
Degree: Master of Applied Science - MASc, Chemical and Biological Engineering, 1951, University of British Columbia
URL: http://hdl.handle.net/2429/40900
► Pressure-volume-temperature data for n-butanol have been determined from 117.5°C and 14.7 psi to 268°C. and 480 psi. The apparatus, designed to reach 1100 psi, was…
(more)
▼ Pressure-volume-temperature data for n-butanol have been determined from 117.5°C and 14.7 psi to 268°C. and 480 psi. The apparatus, designed to reach 1100 psi, was modeled after Kay⁴⁰ and used a dead weight gauge tester for pressure readings and a glass capillary tube as the sample container. Pressures were obtained to ± 0.1 per cent. Nitrogen manometers were also used for pressure measurement in some cases but much less successfully.
Temperatures were maintained constant within a vacuum jacketed column, and measured by a copper-constantan thermocouple calibrated against a standard platinum resistance thermometer to ± 0.05°C.
Trial runs were made on purified water and pure (research grade) n-hexane. The results for water checked with Keyes'⁵⁵ data within 0.5 per cent, and for n-hexane checked with Kay's²³ vapor pressure equation within 3 per cent. The latter deviation was possibly due to contamination while filling the capillary, and a modified filling procedure was introduced for the n-butanol.
Vapor pressure results fell on smooth curves and checked within 0.5 per cent of Stull's critical collection of vapor pressure data at lower pressures, but at higher pressures (400 psi) deviations as much as 7 per cent were found.
The saturated and superheated specific volume data also fell on smooth curves. Saturated values were shown to be accurate for heats of vaporization calculations. The superheated values compared favorably with values calculated from the reduced compressibility charts for hydrocarbons.
Available thermodynamic data were compiled for n-butanol. A pressure-enthalpy diagram was constructed using only Cp data and heats of vaporization as calculated by the correlative methods of Othmer³⁰ and Thomas²⁹.
Heats of vaporization were also calculated from the vapor-pressure and specific volume data using the Clausius-Clapeyron equation agreeing within 3 per cent of the Othmer and Thomas correlations.
Subjects/Keywords: Butanol
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APA (6th Edition):
Esplen, R. W. (1951). Thermodynamic properties of n-butanol. (Masters Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/40900
Chicago Manual of Style (16th Edition):
Esplen, Robert William. “Thermodynamic properties of n-butanol.” 1951. Masters Thesis, University of British Columbia. Accessed April 15, 2021.
http://hdl.handle.net/2429/40900.
MLA Handbook (7th Edition):
Esplen, Robert William. “Thermodynamic properties of n-butanol.” 1951. Web. 15 Apr 2021.
Vancouver:
Esplen RW. Thermodynamic properties of n-butanol. [Internet] [Masters thesis]. University of British Columbia; 1951. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/2429/40900.
Council of Science Editors:
Esplen RW. Thermodynamic properties of n-butanol. [Masters Thesis]. University of British Columbia; 1951. Available from: http://hdl.handle.net/2429/40900
Brno University of Technology
4.
Janošková, Lenka.
Možnosti fermentační výroby butanolu jako suroviny pro motorová paliva - úvodní studie: Possibilities of fermentation production of butanol as raw material for motor fuels - introductory study.
Degree: 2018, Brno University of Technology
URL: http://hdl.handle.net/11012/9815
► The aim of this work was to map out the theoretical basics of acetone-butanol fermentation. In addition, it is to find available data for possibility…
(more)
▼ The aim of this work was to map out the theoretical basics of acetone-
butanol fermentation. In addition, it is to find available data for possibility of the industrial use of this process and to make conclusion for next procedure. The microorganisms producing
butanol, conditions of fermentation and usable raw material were described. Batch, Fed-batch and Continuous fermentation processes are described in more detail from the point of view of productivity of process and yield. Available data was evaluated, but there was a lack of technological data to construct an operational system. Therefore, an experimental pilot plant system was constructed that allowed different types of microorganisms and substrates to be tested. The pilot plant system is for single stage Continuous fermentation with gas stripping product recovery with possibility of expansion to two-stage Continuous fermentation. As well the balance of this process was done.
Advisors/Committee Members: Gabriel, Petr (advisor), Radek, Stloukal (referee).
Subjects/Keywords: butanol; fermentace; butanolové kvašení; butanol; fermentation
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APA (6th Edition):
Janošková, L. (2018). Možnosti fermentační výroby butanolu jako suroviny pro motorová paliva - úvodní studie: Possibilities of fermentation production of butanol as raw material for motor fuels - introductory study. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/9815
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Janošková, Lenka. “Možnosti fermentační výroby butanolu jako suroviny pro motorová paliva - úvodní studie: Possibilities of fermentation production of butanol as raw material for motor fuels - introductory study.” 2018. Thesis, Brno University of Technology. Accessed April 15, 2021.
http://hdl.handle.net/11012/9815.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Janošková, Lenka. “Možnosti fermentační výroby butanolu jako suroviny pro motorová paliva - úvodní studie: Possibilities of fermentation production of butanol as raw material for motor fuels - introductory study.” 2018. Web. 15 Apr 2021.
Vancouver:
Janošková L. Možnosti fermentační výroby butanolu jako suroviny pro motorová paliva - úvodní studie: Possibilities of fermentation production of butanol as raw material for motor fuels - introductory study. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/11012/9815.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Janošková L. Možnosti fermentační výroby butanolu jako suroviny pro motorová paliva - úvodní studie: Possibilities of fermentation production of butanol as raw material for motor fuels - introductory study. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/9815
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
5.
Júlio César Natalense.
Prospecção tecnológica do biobutanol no contexto brasileiro de biocombustíveis.
Degree: 2013, University of São Paulo
URL: http://www.teses.usp.br/teses/disponiveis/85/85131/tde-13082013-091628/
► Dois exemplos de combustíveis renováveis em uso atualmente são bioetanol e biodiesel. Novas alternativas de combustíveis incluem etanol celulósico e biobutanol. Estes apresentam vantagens pois…
(more)
▼ Dois exemplos de combustíveis renováveis em uso atualmente são bioetanol e biodiesel. Novas alternativas de combustíveis incluem etanol celulósico e biobutanol. Estes apresentam vantagens pois contribuem para uma melhor produtividade e otimização do uso de biomassa. Possuem ainda boas propriedades que garantem o bom desempenho como combustíveis. A pesquisa e interesse industrial têm crescido sobre o biobutanol, com melhorias no processo tradicional de fermentação ABE (Acetona-Butanol-Etanol), desenvolvimento de novos microorganismos para aumentar o rendimento e técnicas de separação para isolar o solvente do meio fermentativo. Algumas companhias anunciaram planos para a introdução de biobutanol em misturas com gasolina no mercado norte-americano. O interesse por biobutanol no Brasil como combustível ainda é limitado, pois a infraestrutura de comercialização já é adaptada ao uso de bioetanol, e a maior parte da frota de carros circulante utiliza
motores adaptados ao uso do bioetanol. A cana-de-açúcar pode ser utilizada como matéria prima no processo produtivo do biobutanol, capacitando o Brasil a tornar-se um importante exportador para suprir o biobutanol para outros países. Em curto prazo, o biobutanol poderá ser produzido no Brasil para substituir o petro-butanol como solvente em aplicações industriais ou para o mercado de exportação como combustível. O presente trabalho propõe o uso da técnica technology roadmapping para o planejamento estratégico do desenvolvimento do biobutanol, alinhando os objetivos de longo prazo com os recursos, linhas de financiamento e prioridades para atender as necessidades do processo de desenvolvimento.
Two examples of renewable fuels in use today are bioethanol and biodiesel. New alternatives on biofuels include cellulosic ethanol and biobutanol. They present several advantages over the conventional biofuels, either in terms of better productivity and optimization of the use of biomass,
as well as higher performance attributes. The research and industrial interest has grown on biobutanol, with improvements on the traditional ABE fermentation process, on the development of new microorganism strains to improve yield, and separation techniques to isolate the solvent. Companies have announced plans for the introduction of biobutanol in blends with gasoline in the north-american market. The interest on biobutanol as a fuel in Brazil is still limited, since the infrastructure is tailored to bioethanol already, and most of the car fleet uses engines adapted to this fuel. Sugar cane can be used as a potential feedstock in the butanol production process, enabling Brazil to become a key exporter to supply biobutanol to other countries. For the short future biobutanol will be produced in Brazil to replace petro-butanol as a solvent in industrial applications only, or for the export market as a fuel. This work proposes the use of technology roadmapping as a technique for long
term strategic planning of the biobutanol development, aligning long term goals with the resources, funding, and…
Advisors/Committee Members: Desirée Moraes Zouain, Paulo Luiz de Andrade Coutinho, Willy Hoppe de Sousa.
Subjects/Keywords: biocombustível; butanol; gestão; biofuel; butanol; roadmap
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APA (6th Edition):
Natalense, J. C. (2013). Prospecção tecnológica do biobutanol no contexto brasileiro de biocombustíveis. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/85/85131/tde-13082013-091628/
Chicago Manual of Style (16th Edition):
Natalense, Júlio César. “Prospecção tecnológica do biobutanol no contexto brasileiro de biocombustíveis.” 2013. Masters Thesis, University of São Paulo. Accessed April 15, 2021.
http://www.teses.usp.br/teses/disponiveis/85/85131/tde-13082013-091628/.
MLA Handbook (7th Edition):
Natalense, Júlio César. “Prospecção tecnológica do biobutanol no contexto brasileiro de biocombustíveis.” 2013. Web. 15 Apr 2021.
Vancouver:
Natalense JC. Prospecção tecnológica do biobutanol no contexto brasileiro de biocombustíveis. [Internet] [Masters thesis]. University of São Paulo; 2013. [cited 2021 Apr 15].
Available from: http://www.teses.usp.br/teses/disponiveis/85/85131/tde-13082013-091628/.
Council of Science Editors:
Natalense JC. Prospecção tecnológica do biobutanol no contexto brasileiro de biocombustíveis. [Masters Thesis]. University of São Paulo; 2013. Available from: http://www.teses.usp.br/teses/disponiveis/85/85131/tde-13082013-091628/
Ryerson University
6.
Kang, Jin.
Improving bio-butanol production from lignocellulosic feedstock by tailoring metabolic perturbations.
Degree: 2017, Ryerson University
URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A7282
► The objective of this study is to enhance bio-butanol production using lignocellulosic feedstock via supplements of metabolism perturbation. Metabolic perturbations are non-substrate-based chemical additives that…
(more)
▼ The objective of this study is to enhance bio-butanol production using lignocellulosic feedstock via supplements of metabolism perturbation. Metabolic perturbations are non-substrate-based chemical additives that can reinforce metabolic flux towards butanol formation, or increase tolerance to microbial inhibitors in the feedstock. Typical metabolic perturbations include CaCO3, ZnSO4, methyl red, and furan derivatives such as furfural and hydroxymethylfurfural (HMF). In this study, we stepwise tailored metabolic perturbations to maximize butanol production from pure sugar and lignocellulosic feedstock. Under optimized conditions of 4 g/L CaCO3, 2 mg/L ZnSO4, butanol production exceeded 10g/L in wheat straw hydrolysate, which was significantly higher than that obtained in the absent of ZnSO4 and CaCO3. As compared to traditional lignocellulosic feedstock post-treatment method, metabolic perturbations method shows advantages in terms of productivity and economics. Improved bio-butanol production is related to the overexpression of NAD(P)H dependent genes.
Subjects/Keywords: Lignocellulose – Biotechnology; Butanol; Biomass energy
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APA (6th Edition):
Kang, J. (2017). Improving bio-butanol production from lignocellulosic feedstock by tailoring metabolic perturbations. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A7282
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kang, Jin. “Improving bio-butanol production from lignocellulosic feedstock by tailoring metabolic perturbations.” 2017. Thesis, Ryerson University. Accessed April 15, 2021.
https://digital.library.ryerson.ca/islandora/object/RULA%3A7282.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kang, Jin. “Improving bio-butanol production from lignocellulosic feedstock by tailoring metabolic perturbations.” 2017. Web. 15 Apr 2021.
Vancouver:
Kang J. Improving bio-butanol production from lignocellulosic feedstock by tailoring metabolic perturbations. [Internet] [Thesis]. Ryerson University; 2017. [cited 2021 Apr 15].
Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A7282.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kang J. Improving bio-butanol production from lignocellulosic feedstock by tailoring metabolic perturbations. [Thesis]. Ryerson University; 2017. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A7282
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oregon State University
7.
Vangnai, Alisa S.
Biochemical, molecular and physiological characterization of 1-butanol dehydrogenases of Pseudomonas butanovora in butane and 1-butanol metabolism.
Degree: PhD, Biochemistry and Biophysics, 2002, Oregon State University
URL: http://hdl.handle.net/1957/31602
► Butane-grown Pseudomonas butanovora oxidized butane by a soluble butane monooxygenase through the terminal pathway yielding 1 -butanol as the predominant product. Alcohol dehydrogenases (ADHs) involved…
(more)
▼ Butane-grown Pseudomonas butanovora oxidized butane by a soluble
butane monooxygenase through the terminal pathway yielding 1 -
butanol as the
predominant product. Alcohol dehydrogenases (ADHs) involved in butane
oxidation in P. butanovora were purified and characterized at the biochemical,
genetic and physiological levels. Butane-grown P. butanovora expressed a type I
soluble quinoprotein 1 -
butanol dehydrogenase (BOH), a soluble type II
quinohemoprotein 1 -
butanol dehydrogenase (BDH) and an NAD⁺-dependent
secondary ADH. Two additional NAD⁺-dependent secondary ADHs were also
detected in cells grown on 2-
butanol and lactate. BDH was purified to near
homogeneity and characterized. BDH is a monomer of 66 kDa consisting of one
mole of pyrroloquinoline quinone (PQQ) and 0.25 mole of heme c as the prosthetic
groups. BOH was partially purified and its deduced amino acid sequence suggests
a 67-kDa ADH containing a PQQ as a cofactor. BOH and BDH exhibited high
activities and preference towards I -
butanol and fair preference towards
butyraldehyde. While BDH could not oxidize 2-
butanol, BOH is capable of
2-
butanol oxidation and has a broader substrate range than that of BDH. Genes
encoding BOH and BDH and their deduced amino acid sequences were identified.
BOH and BDH mRNAs and 1-
butanol oxidation activity were induced when cells
were exposed to butane. Primary C₂ and C₄ alcohols were the most effective
inducers for boh and bdh. Some secondary alcohols, such as 2-
butanol, were also
inducers for BOH mRNA, but not for BDH mRNA. Insertional inactivation of boh
or bdh affected unfavorably, but did not eliminate, butane utilization in
P. butanovora. The P. butanovora mutant strain with both boh and bdh genes
disrupted was unable to grow on butane and 1-
butanol. This result confirmed the
involvement of BOH and BDH in butane and 1-
butanol metabolism in
P. butanovora. Roles of B011 and BDH in butane and 1-
butanol metabolism were
further studied at the physiological level. There are no substantial differences
between BOH and BDH in the mRNA expressions in response to three different 1-
butanol levels tested and in their abilities to respond to 1-
butanol toxicity.
Different bioenergetic roles of BOH and BDH in butane and 1-
butanol metabolism
were suggested. A model of 1 -
butanol- dependent respiratory systems was
proposed where the electrons from 1 -
butanol oxidation follow a branched electron
transport chain. The role of BOH was suggested to function primarily in energy
generation because B011 may couple to ubiquinone with the electrons being
transported to a cyanide-sensitive terminal oxidase. BDH may be more important
in the detoxification of 1 -
butanol because the electrons from BDH may be
transferred to a terminal oxidase system that is less sensitive to cyanide, which is
not capable of energy generation.
Advisors/Committee Members: Arp, Daniel J. (advisor), Mathews, Christopher K. (committee member).
Subjects/Keywords: Butanol – Metabolism
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APA (6th Edition):
Vangnai, A. S. (2002). Biochemical, molecular and physiological characterization of 1-butanol dehydrogenases of Pseudomonas butanovora in butane and 1-butanol metabolism. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/31602
Chicago Manual of Style (16th Edition):
Vangnai, Alisa S. “Biochemical, molecular and physiological characterization of 1-butanol dehydrogenases of Pseudomonas butanovora in butane and 1-butanol metabolism.” 2002. Doctoral Dissertation, Oregon State University. Accessed April 15, 2021.
http://hdl.handle.net/1957/31602.
MLA Handbook (7th Edition):
Vangnai, Alisa S. “Biochemical, molecular and physiological characterization of 1-butanol dehydrogenases of Pseudomonas butanovora in butane and 1-butanol metabolism.” 2002. Web. 15 Apr 2021.
Vancouver:
Vangnai AS. Biochemical, molecular and physiological characterization of 1-butanol dehydrogenases of Pseudomonas butanovora in butane and 1-butanol metabolism. [Internet] [Doctoral dissertation]. Oregon State University; 2002. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/1957/31602.
Council of Science Editors:
Vangnai AS. Biochemical, molecular and physiological characterization of 1-butanol dehydrogenases of Pseudomonas butanovora in butane and 1-butanol metabolism. [Doctoral Dissertation]. Oregon State University; 2002. Available from: http://hdl.handle.net/1957/31602
University of New South Wales
8.
Safinski, Tomasz.
Catalytic distillation for the synthesis of tertiary butyl alcohol.
Degree: Chemical Engineering & Industrial Chemistry, 2005, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/23068
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:828/SOURCE01?view=true
► Catalytic Distillation for the synthesis of tertiary butyl alcohol (TBA) is investigated in this thesis. The solvent, ethylene glycol, is proposed as a means of…
(more)
▼ Catalytic Distillation for the synthesis of tertiary butyl alcohol (TBA) is investigated in this thesis. The solvent, ethylene glycol, is proposed as a means of overcoming challenges, which limit the potential benefits of the application of reactive separation for TBA. The proposed action of the solvent is that of extractive distillation entrainer, thus a new unit operation of Catalytic Extractive Distillation (CED) is suggested. The solubility of isobutylene in water, TBA, and ethylene glycol and their binary andternary mixtures, at different temperatures, is measured and correlated. The solubility is found to be highly non-linear in solutions containing TBA. The kinetics of isobutylene hydration over Amberlyst 15 is characterised in the presence of ethylene glycol. The solvent is found to promote reaction rate, however it is also found to compete for reaction with isobutylene. Water is found to strongly inhibit the reaction of ethylene glycol and isobutylene. The selectivity ratio of TBA to by products is determined and found to improve with increased temperature and lower solvent concentration. Bale packing is chosen as catalytic distillation hardware for the containment of Amberlyst 15 and its two-phase fluid dynamics characterised for the first time. Raschigrings are used as a benchmark for the study. Bale packing is found to exhibit two ranges of backmixing behaviour in the pre-loading regime. This behaviour is attributed to the three levels of porosity of the hardware and indicative of low rates of catalyst/liquid renewal. The effectiveness of ethylene glycol as extractive distillation entrainer for the separationof the TBA/water azeotrope over Bale packing is investigated and the solvent found to be highly effective. The mass transfer resistances to isobutylene transport are determined for countercurrent fixed bed reactor (CFBR) application of Bale packing. It is found that ethylene glycol improves mass transfer coefficients attainable. Catalytic Extractive Distillation is implemented over Bale packing and the ability of the solvent to improve reaction rates and purity of TBA demonstrated. However, the reaction rates achieved have much scope for improvement through increased isobutylene availability. In response to poor liquid renewal of static packing such as Bale packing and the necessity of improved isobutylene transport a new form of catalytic distillation reactor design is proposed, the Basket Impeller Column (BIC). The BIC combines the mass transfer benefits of a rotating basket reactor with that of a dual flow column. Capacity of the new hardware is determined and correlated. Separation and reactive separation aredemonstrated to be feasible. It is found that Damköhler number can be varied directly using the additional process variable of speed of rotation.
Subjects/Keywords: butanol; distillation
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APA ·
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APA (6th Edition):
Safinski, T. (2005). Catalytic distillation for the synthesis of tertiary butyl alcohol. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/23068 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:828/SOURCE01?view=true
Chicago Manual of Style (16th Edition):
Safinski, Tomasz. “Catalytic distillation for the synthesis of tertiary butyl alcohol.” 2005. Doctoral Dissertation, University of New South Wales. Accessed April 15, 2021.
http://handle.unsw.edu.au/1959.4/23068 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:828/SOURCE01?view=true.
MLA Handbook (7th Edition):
Safinski, Tomasz. “Catalytic distillation for the synthesis of tertiary butyl alcohol.” 2005. Web. 15 Apr 2021.
Vancouver:
Safinski T. Catalytic distillation for the synthesis of tertiary butyl alcohol. [Internet] [Doctoral dissertation]. University of New South Wales; 2005. [cited 2021 Apr 15].
Available from: http://handle.unsw.edu.au/1959.4/23068 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:828/SOURCE01?view=true.
Council of Science Editors:
Safinski T. Catalytic distillation for the synthesis of tertiary butyl alcohol. [Doctoral Dissertation]. University of New South Wales; 2005. Available from: http://handle.unsw.edu.au/1959.4/23068 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:828/SOURCE01?view=true
University of Illinois – Urbana-Champaign
9.
Lee, Timothy H.
Spray and combustion characteristics of acetone-butanol-ethanol and diesel in a constant volume chamber and a diesel engine.
Degree: MS, Mechanical Engineering, 2015, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/88164
► Recent research has shown that butanol, instead of ethanol, has the potential of introducing a more suitable blend in diesel engines. This is because butanol…
(more)
▼ Recent research has shown that
butanol, instead of ethanol, has the potential of introducing a more suitable blend in diesel engines. This is because
butanol has properties similar to current transportation fuels in comparison to ethanol. However, the main downside is the high cost of the
butanol production process. Acetone-
butanol-ethanol (ABE) is an intermediate product of the fermentation process of
butanol production. By eliminating the separation and purification processes, using ABE directly in diesel blends has the potential of greatly decreasing the overall cost for fuel production. This could lead to a vast commercial use of ABE-diesel blends on the market. Research has been done in the past five years concerning spray and combustion processes of both neat ABE and ABE-diesel mixtures. Additionally, different compositions of ABE mixtures had been characterized with a similar experimental approach.
This thesis reviews the production of ABE and characterization of its spray and combustion processes. The results obtained during the recent four years will also be presented. The main focus of this paper is to review the efforts made in fundamental spray research under quasi-steady flow field environments provided by a high-pressure, high-temperature constant volume chamber. In-cylinder pressure traces were calculated to derive apparent heat release rates, high-speed Mie-scattering images were acquired to characterize liquid spray penetration, and natural flame luminosity was also captured to depict spatial and temporal soot distribution. It is observed that the acetone content has a major influence in the combustion behavior of the ABE mixture. An increased content of acetone will lead to a significantly advanced combustion phasing.
Butanol, as another important species in the ABE mixture, is able to compensate the advancing effect caused by acetone and ethanol. More importantly,
butanol can increase the overall energy density of the mixture, which makes the property of the mixture closer to that of current transportation fuels. In addition, the underlying challenges faced in this area of research are described.
Additionally, the performance and emissions of acetone-
butanol-ethanol (ABE)/diesel mixtures in an AVL 5402 single cylinder diesel research engine under various engine operating conditions were investigated in this study. The experiments were conducted at three different speeds (1200, 1500, and 2000 RPM) and different injection quantities (loads) (15, 20, and 25 mg/cycle).
The fuels tested in these experiments were pure diesel, ABE10, and ABE20. The acetone-
butanol-ethanol (ABE) was blended in a 3:6:1 ratio. ABE10 and ABE20 consist of 10% acetone-
butanol-ethanol mixture and 90% diesel by volume and 20% ABE is mixed with 80% diesel by volume, respectively.
The results showed a promising future for ABE-diesel mixtures as an alternative transportation fuel. There was improved thermal efficiency even with relatively small ABE blending ratios and a slight reduction in power output due to the lower…
Advisors/Committee Members: Hansen, Alan C. (advisor).
Subjects/Keywords: Acetone; Butanol; Ethanol; Diesel; Alternative; Fuel; Acetone-butanol-ethanol (ABE); Baelene
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APA (6th Edition):
Lee, T. H. (2015). Spray and combustion characteristics of acetone-butanol-ethanol and diesel in a constant volume chamber and a diesel engine. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/88164
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lee, Timothy H. “Spray and combustion characteristics of acetone-butanol-ethanol and diesel in a constant volume chamber and a diesel engine.” 2015. Thesis, University of Illinois – Urbana-Champaign. Accessed April 15, 2021.
http://hdl.handle.net/2142/88164.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lee, Timothy H. “Spray and combustion characteristics of acetone-butanol-ethanol and diesel in a constant volume chamber and a diesel engine.” 2015. Web. 15 Apr 2021.
Vancouver:
Lee TH. Spray and combustion characteristics of acetone-butanol-ethanol and diesel in a constant volume chamber and a diesel engine. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2015. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/2142/88164.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lee TH. Spray and combustion characteristics of acetone-butanol-ethanol and diesel in a constant volume chamber and a diesel engine. [Thesis]. University of Illinois – Urbana-Champaign; 2015. Available from: http://hdl.handle.net/2142/88164
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universidade Estadual de Campinas
10.
Silva, Douglas Batista da, 1988-.
Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias.
Degree: Faculdade de Engenharia Agrícola; Programa de Pós-Graduação em Engenharia Agrícola, 2015, Universidade Estadual de Campinas
URL: SILVA,
Douglas
Batista
da.
Desempenho
de
reatores
anaeróbios
de
leito
fixo
para
a
produção
de
butanol
e
etanol
a
partir
de
águas
residuárias.
2015.
85
p.
Dissertação
(mestrado)
-
Universidade
Estadual
de
Campinas,
Faculdade
de
Engenharia
Agrícola,
Campinas,
SP.
Disponível
em:
<http://www.repositorio.unicamp.br/handle/REPOSIP/256744>.
Acesso
em:
27
ago.
2018.
;
http://repositorio.unicamp.br/jspui/handle/REPOSIP/256744
► Orientador: Ariovaldo José da Silva
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola
Made available in DSpace on 2018-08-27T23:32:57Z (GMT). No. of…
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▼ Orientador: Ariovaldo José da Silva
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola
Made available in DSpace on 2018-08-27T23:32:57Z (GMT). No. of bitstreams: 1 Silva_DouglasBatistada_M.pdf: 2490257 bytes, checksum: 46f41b6961223169590146af18566274 (MD5) Previous issue date: 2015
Resumo: A crescente demanda por fontes de energia renováveis vem direcionando esforços e interesses por pesquisas focadas no desenvolvimento de biocombustíveis, a partir da digestão de resíduos provenientes de atividades agrícolas e agroindustriais. Neste contexto, a digestão anaeróbia pode ser direcionada para a produção e aproveitamento de subprodutos intermediários com alto valor agregado, como, por exemplo, etanol e butanol. O objetivo geral deste trabalho foi avaliar o desempenho de reatores anaeróbios de leito fixo e fluxo ascendente no tratamento de água residuária, visando à produção biológica de butanol e
etanol a partir de uma cultura mista de micro-organismos selvagens. Foram utilizados dois reatores anaeróbios de leito fixo, com volume total de 3,77 litros. O primeiro reator foi mantido em condição acidogênica e o segundo em condição solventogênica. Os reatores foram operados em cinco diferentes etapas com tempo detenção hidráulica (TDH) de 2, 4 e 12 h e alimentados com água residuária sintética preparada para resultar em DQO em torno de 500 mg L-1, 1.000 mg L-1, 4.000 mg L-1 e 12.000 mg L-1, tendo como principal fonte de carbono sacarose. Além disso, foram avaliadas duas condições de temperaturas diferentes, ambiente (variando de 25ºC a 30ºC) e controlada (35ºC). Em cada etapa também foi avaliada a influência do efeito da recirculação do biogás no desempenho dos reatores, operando-os por um período de 30 dias sem recirculação de biogás e 30 dias com recirculação de biogás. Os resultados mostraram que a suplementação de bicarbonato de sódio no preparo do afluente auxiliou no
aumento da capacidade de tamponamento do sistema e a recirculação de biogás favoreceu a estabilidade nos valores de pH durante todo o período experimental nessa condição. A variação crescente do tempo de detenção hidráulica (TDH) e da concentração de matéria orgânica (DQO) conduziu a um aumento na concentração de ácidos voláteis totais (AVT) e na concentração de produtos intermediários resultante da fermentação da sacarose. A concentração média de AVT variou de 89,3 mg L-1 da etapa I para 147,0 mg L-1 na etapa II, quando houve aumento do TDH e da DQO afluente. A variação da temperatura não influenciou a produção de AVT, na etapa III na qual a temperatura foi variável a concentração média de AVT detectada no efluente foi 546,0 mg L-1 e na etapa IV, com temperatura mantida em 35°C a concentração média de AVT no efluente foi 530,4 mg L-1. O melhor desempenho na produção de etanol foi verificado no reator solventogênico, com o pH em torno de 4,5, quando mantido com temperatura controlada
a 35°C, TDH de 4 horas e taxa de carregamento orgânico (TCO) de 24 g DQO m-3d-1, sem recirculação de biogás. Nessa…
Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS, Silva, Ariovaldo José da, 1966-, Zaiat, Marcelo, Nour, Edson Aparecido Abdul.
Subjects/Keywords: Digestão anaeróbia; Agua residuaria; Butanol; Etanol; Anaerobic digestion; Wastewater; Butanol; Ehtanol
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APA ·
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APA (6th Edition):
Silva, Douglas Batista da, 1. (2015). Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias. (Masters Thesis). Universidade Estadual de Campinas. Retrieved from SILVA, Douglas Batista da. Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias. 2015. 85 p. Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/256744>. Acesso em: 27 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/256744
Chicago Manual of Style (16th Edition):
Silva, Douglas Batista da, 1988-. “Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias.” 2015. Masters Thesis, Universidade Estadual de Campinas. Accessed April 15, 2021.
SILVA, Douglas Batista da. Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias. 2015. 85 p. Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/256744>. Acesso em: 27 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/256744.
MLA Handbook (7th Edition):
Silva, Douglas Batista da, 1988-. “Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias.” 2015. Web. 15 Apr 2021.
Vancouver:
Silva, Douglas Batista da 1. Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias. [Internet] [Masters thesis]. Universidade Estadual de Campinas; 2015. [cited 2021 Apr 15].
Available from: SILVA, Douglas Batista da. Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias. 2015. 85 p. Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/256744>. Acesso em: 27 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/256744.
Council of Science Editors:
Silva, Douglas Batista da 1. Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias. [Masters Thesis]. Universidade Estadual de Campinas; 2015. Available from: SILVA, Douglas Batista da. Desempenho de reatores anaeróbios de leito fixo para a produção de butanol e etanol a partir de águas residuárias. 2015. 85 p. Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/256744>. Acesso em: 27 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/256744
Universidade Estadual de Campinas
11.
Affonso, Raquel Cristina, 1989-.
Study of the electrooxidation of 2-butanol in platinum surfaces : Estudo da eletro-oxidação de 2-butanol em catalisadores de platina.
Degree: Instituto de Química; Programa de Pós-Graduação em Química, 2020, Universidade Estadual de Campinas
URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/348307
► Orientador: Pablo Sebastian Fernandez
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química
Made available in DSpace on 2020-08-28T20:14:27Z (GMT). No. of bitstreams: 1…
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▼ Orientador: Pablo Sebastian Fernandez
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química
Made available in DSpace on 2020-08-28T20:14:27Z (GMT). No. of bitstreams: 1 Affonso_RaquelCristina_M.pdf: 2884077 bytes, checksum: d853c098729a70335f40149cd8ec1b3a (MD5) Previous issue date: 2020
Resumo: O modo no qual os átomos estão organizados na superfície de um catalisador exerce influência direta na cinética e no mecanismo de reações químicas. Isso ocorre devido às diferentes energias de adsorção de uma mesma molécula nessas faces catalíticas. Em um fio metálico comum, os átomos estão organizados de variadas formas por toda sua extensão, sendo o resultado obtido para uma reação através dessa superfície, dita policristalina, equivalente à contribuição de todos os diferentes domínios presentes. O uso de monocristais ajuda a entender a relação entre os arranjos dos átomos na superfície de um catalisador e sua
atividade, pois sua ordenação atômica é repetida periodicamente por toda a superfície. Neste trabalho, catalisadores poli e monocristalinos de platina foram utilizados na reação de eletro-oxidação do 2-butanol em soluções de ácido sulfúrico e ácido perclórico. A platina foi escolhida em consequência de sua reatividade frente à oxidação de álcoois. Os monocristais usados possuem índices de Miller (100), (110), (111), (211), (431) e (531). Para realizar um estudo fundamental e manter o sistema o mais simples possível, o 2-butanol foi utilizado como reagente, já que é o menor álcool quiral comercialmente disponível. A compreensão dos aspectos fundamentais da interação entre esse álcool, os íons presentes na solução eletrolítica e os diferentes catalisadores de platina, é o primeiro passo para o desenvolvimento de sistemas mais favoráveis à eletrocatálise e eletrossíntese assimétrica. Os experimentos mostraram que Pt(111) é a superfície mais ativa para a oxidação do álcool. Experimentos
em H2SO4 e HClO4 mostraram forte influência do ânion, sendo a reação mais rápida na presença de HClO4. Medidas de FTIR in situ mostraram que butanona e CO2 são os produtos da reação, sendo o primeiro, o produto formado em maior quantidade, independentemente do catalisador utilizado. Finalmente, a reação em monocristais não quirais mostrou que os enantiômeros mais puros de álcoois disponíveis no mercado não possuem a pureza necessária para este estudo
The way that atoms are organized on the surface of a catalyst has a direct influence on the kinetics and mechanism of chemical reactions. This influence is due to the differences in adsorption energy of the same molecule on the different catalytic surfaces. In a common metallic wire, the atoms are organized in different ways throughout its surface (polycrystalline surface), and the result obtained for a reaction, is due to the contribution of all the different atomic orientations present. The use of single crystals helps understanding
the relation between the arrangements of the atoms at the surface of a catalyst and its activity, as its atomic ordering…
Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS, Fernández, Pablo Sebastián, 1983-, Lucca Júnior, Emilio Carlos de, Silva, Giuseppe Abíola Câmara da.
Subjects/Keywords: Eletro-oxidação; Catalisadores de platina; Butanol; Electrooxidation; Platinum catalysts; Butanol
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APA (6th Edition):
Affonso, Raquel Cristina, 1. (2020). Study of the electrooxidation of 2-butanol in platinum surfaces : Estudo da eletro-oxidação de 2-butanol em catalisadores de platina. (Masters Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/348307
Chicago Manual of Style (16th Edition):
Affonso, Raquel Cristina, 1989-. “Study of the electrooxidation of 2-butanol in platinum surfaces : Estudo da eletro-oxidação de 2-butanol em catalisadores de platina.” 2020. Masters Thesis, Universidade Estadual de Campinas. Accessed April 15, 2021.
http://repositorio.unicamp.br/jspui/handle/REPOSIP/348307.
MLA Handbook (7th Edition):
Affonso, Raquel Cristina, 1989-. “Study of the electrooxidation of 2-butanol in platinum surfaces : Estudo da eletro-oxidação de 2-butanol em catalisadores de platina.” 2020. Web. 15 Apr 2021.
Vancouver:
Affonso, Raquel Cristina 1. Study of the electrooxidation of 2-butanol in platinum surfaces : Estudo da eletro-oxidação de 2-butanol em catalisadores de platina. [Internet] [Masters thesis]. Universidade Estadual de Campinas; 2020. [cited 2021 Apr 15].
Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/348307.
Council of Science Editors:
Affonso, Raquel Cristina 1. Study of the electrooxidation of 2-butanol in platinum surfaces : Estudo da eletro-oxidação de 2-butanol em catalisadores de platina. [Masters Thesis]. Universidade Estadual de Campinas; 2020. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/348307
Universidade Estadual de Campinas
12.
Assumpção, Daniel de Castro, 1989-.
Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus.
Degree: Faculdade de Engenharia Química; Programa de Pós-Graduação em Engenharia Química, 2017, Universidade Estadual de Campinas
URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/325670
► Orientador: Adriano Pinto Mariano
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química
Made available in DSpace on 2017-10-30T13:01:17Z (GMT). No. of bitstreams:…
(more)
▼ Orientador: Adriano Pinto Mariano
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química
Made available in DSpace on 2017-10-30T13:01:17Z (GMT). No. of bitstreams: 1 Assumpcao_DanielDeCastro_M.pdf: 3409762 bytes, checksum: 824f31dc82fea6093b8232cc1214ad9d (MD5) Previous issue date: 2017
Resumo: O setor de papel e celulose tem dado claros indícios de mudança em sua estratégia industrial e comercial. O anseio pela produção de novos produtos a partir de fonte renovável (como por exemplo, cavacos de eucalipto) tem sido uma das principais forças que estão levando o setor buscar por outras tecnologias. Dentre estes produtos, destacam-se os combustíveis como etanol e butanol, que podem ser produzidos pela fermentação dos açúcares celulósicos presentes no eucalipto. Devido à toxicidade dos próprios produtos, as fermentações tendem a ocorrer em meios reacionais diluídos, que implicam em elevados dispêndios
energéticos e produção de vinhaça elevada, que podem reduzir a atratividade econômica de projetos. Aliada a motivação de se criar uma tecnologia que supere a problemática da inibição, está o interesse econômico em processos flexíveis, que permitem a criação de um negócio robusto frente a oscilações do mercado. Sendo assim, este projeto de caráter exploratório busca obter os principais rendimentos de um processo de fermentação flexível e intensivo. Em um primeiro momento, avaliou-se a produção de meio de cultivo de micro-organismos a partir de eucalipto. Para tanto, pré-tratou-se eucalipto com ácido sulfúrico diluído a diversas condições, seguido de uma hidrólise enzimática. Para uma hidrólise enzimática com 10% de teor de sólidos, foram alcançados concentrações baixas de glicose ¿ na faixa de 5 g/L ¿ e rendimentos globais de processo em glicose (pré-tratamento e hidrólise enzimática) na faixa dos 6%. Suplementou-se o caldo com glicose sintética para a realização dos ensaios de
fermentação alcoólica para a produção de acetona, n-butanol e etanol (ABE). Avaliou-se três modos de operação: (1) fermentação batelada, (2) fermentação batelada com aplicação de vácuo intermitente e (3) fermentação semi-batelada com aplicação de vácuo intermitente (apenas na fermentação etanólica). Para a fermentação etanólica, observou-se que o tempo de reação diminuiu em 3h comparando batelada com batelada mais vácuo intermitente, aumentando a IV produtividade de 2,66 g/Lh para 3,20 g/L.h. Para os ensaios semi-batelada com vácuo intermitente, a produtividade foi inferior (1,74 g/Lh) pois o fornecimento de substrato era inferior a taxa de metabolização, levando a períodos de inatividade do micro-organismos. Este problema, no entanto, pode ser contornado, ministrando-se um substrato mais concentrado ou ultrapassando-se o volume inicial de fermentação. Com relação à fermentação ABE, verificou-se que a metabolização de substrato rico em pentoses ocorre muito lentamente (cerca de 84h
totais) com baixas conversões do substrato (cerca de 40%), não justificando uma operação com vácuo. Já a fermentação de…
Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS, Mariano, Adriano Pinto, 1978-, Maciel Filho, Rubens, Santos, Samantha Christine.
Subjects/Keywords: Fermentação sob vacuo; Etanol; Butanol; Eucalipto; Vacuum fermentation; Ethanol; Butanol; Eucalyptus
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Record Details
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Assumpção, Daniel de Castro, 1. (2017). Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. (Doctoral Dissertation). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/325670
Chicago Manual of Style (16th Edition):
Assumpção, Daniel de Castro, 1989-. “Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus.” 2017. Doctoral Dissertation, Universidade Estadual de Campinas. Accessed April 15, 2021.
http://repositorio.unicamp.br/jspui/handle/REPOSIP/325670.
MLA Handbook (7th Edition):
Assumpção, Daniel de Castro, 1989-. “Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus.” 2017. Web. 15 Apr 2021.
Vancouver:
Assumpção, Daniel de Castro 1. Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. [Internet] [Doctoral dissertation]. Universidade Estadual de Campinas; 2017. [cited 2021 Apr 15].
Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/325670.
Council of Science Editors:
Assumpção, Daniel de Castro 1. Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. [Doctoral Dissertation]. Universidade Estadual de Campinas; 2017. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/325670
Universidade Estadual de Campinas
13.
Assumpção, Daniel de Castro, 1989-.
Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus.
Degree: Faculdade de Engenharia Química; Programa de Pós-Graduação em Engenharia Química, 2017, Universidade Estadual de Campinas
URL: ASSUMPÇÃO,
Daniel
de
Castro.
Flexibilização
da
tecnologia
de
fermentação
à
vácuo:
produção
de
n-butanol
e
etanol
a
partir
de
eucalipto
=
Vacuum
fermentation
technology
flexibilization:
n-butanol
and
ethanol
production
from
eucalyptus.
2017.
1
recurso
online
(159
p.).
Dissertação
(mestrado)
-
Universidade
Estadual
de
Campinas,
Faculdade
de
Engenharia
Química,
Campinas,
SP.
Disponível
em:
<http://www.repositorio.unicamp.br/handle/REPOSIP/325671>.
Acesso
em:
2
set.
2018.
;
http://repositorio.unicamp.br/jspui/handle/REPOSIP/325671
► Orientador: Adriano Pinto Mariano
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química
Made available in DSpace on 2018-09-02T10:13:35Z (GMT). No. of bitstreams:…
(more)
▼ Orientador: Adriano Pinto Mariano
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química
Made available in DSpace on 2018-09-02T10:13:35Z (GMT). No. of bitstreams: 1 Assumpcao_DanielDeCastro_M.pdf: 3409762 bytes, checksum: 824f31dc82fea6093b8232cc1214ad9d (MD5) Previous issue date: 2017
Resumo: O setor de papel e celulose tem dado claros indícios de mudança em sua estratégia industrial e comercial. O anseio pela produção de novos produtos a partir de fonte renovável (como por exemplo, cavacos de eucalipto) tem sido uma das principais forças que estão levando o setor buscar por outras tecnologias. Dentre estes produtos, destacam-se os combustíveis como etanol e butanol, que podem ser produzidos pela fermentação dos açúcares celulósicos presentes no eucalipto. Devido à toxicidade dos próprios produtos, as fermentações tendem a ocorrer em meios reacionais diluídos, que implicam em elevados dispêndios
energéticos e produção de vinhaça elevada, que podem reduzir a atratividade econômica de projetos. Aliada a motivação de se criar uma tecnologia que supere a problemática da inibição, está o interesse econômico em processos flexíveis, que permitem a criação de um negócio robusto frente a oscilações do mercado. Sendo assim, este projeto de caráter exploratório busca obter os principais rendimentos de um processo de fermentação flexível e intensivo. Em um primeiro momento, avaliou-se a produção de meio de cultivo de micro-organismos a partir de eucalipto. Para tanto, pré-tratou-se eucalipto com ácido sulfúrico diluído a diversas condições, seguido de uma hidrólise enzimática. Para uma hidrólise enzimática com 10% de teor de sólidos, foram alcançados concentrações baixas de glicose ¿ na faixa de 5 g/L ¿ e rendimentos globais de processo em glicose (pré-tratamento e hidrólise enzimática) na faixa dos 6%. Suplementou-se o caldo com glicose sintética para a realização dos ensaios de
fermentação alcoólica para a produção de acetona, n-butanol e etanol (ABE). Avaliou-se três modos de operação: (1) fermentação batelada, (2) fermentação batelada com aplicação de vácuo intermitente e (3) fermentação semi-batelada com aplicação de vácuo intermitente (apenas na fermentação etanólica). Para a fermentação etanólica, observou-se que o tempo de reação diminuiu em 3h comparando batelada com batelada mais vácuo intermitente, aumentando a IV produtividade de 2,66 g/Lh para 3,20 g/L.h. Para os ensaios semi-batelada com vácuo intermitente, a produtividade foi inferior (1,74 g/Lh) pois o fornecimento de substrato era inferior a taxa de metabolização, levando a períodos de inatividade do micro-organismos. Este problema, no entanto, pode ser contornado, ministrando-se um substrato mais concentrado ou ultrapassando-se o volume inicial de fermentação. Com relação à fermentação ABE, verificou-se que a metabolização de substrato rico em pentoses ocorre muito lentamente (cerca de 84h
totais) com baixas conversões do substrato (cerca de 40%), não justificando uma operação com vácuo. Já a fermentação de…
Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS, Mariano, Adriano Pinto, 1978-, Maciel Filho, Rubens, Santos, Samantha Christine.
Subjects/Keywords: Fermentação sob vacuo; Etanol; Butanol; Eucalipto; Vacuum fermentation; Ethanol; Butanol; Eucalyptus
Record Details
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Cite
Share »
Record Details
Similar Records
Cite
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Assumpção, Daniel de Castro, 1. (2017). Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. (Masters Thesis). Universidade Estadual de Campinas. Retrieved from ASSUMPÇÃO, Daniel de Castro. Flexibilização da tecnologia de fermentação à vácuo: produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. 2017. 1 recurso online (159 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/325671>. Acesso em: 2 set. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/325671
Chicago Manual of Style (16th Edition):
Assumpção, Daniel de Castro, 1989-. “Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus.” 2017. Masters Thesis, Universidade Estadual de Campinas. Accessed April 15, 2021.
ASSUMPÇÃO, Daniel de Castro. Flexibilização da tecnologia de fermentação à vácuo: produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. 2017. 1 recurso online (159 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/325671>. Acesso em: 2 set. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/325671.
MLA Handbook (7th Edition):
Assumpção, Daniel de Castro, 1989-. “Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus.” 2017. Web. 15 Apr 2021.
Vancouver:
Assumpção, Daniel de Castro 1. Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. [Internet] [Masters thesis]. Universidade Estadual de Campinas; 2017. [cited 2021 Apr 15].
Available from: ASSUMPÇÃO, Daniel de Castro. Flexibilização da tecnologia de fermentação à vácuo: produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. 2017. 1 recurso online (159 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/325671>. Acesso em: 2 set. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/325671.
Council of Science Editors:
Assumpção, Daniel de Castro 1. Flexibilização da tecnologia de fermentação à vácuo = produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. [Masters Thesis]. Universidade Estadual de Campinas; 2017. Available from: ASSUMPÇÃO, Daniel de Castro. Flexibilização da tecnologia de fermentação à vácuo: produção de n-butanol e etanol a partir de eucalipto = Vacuum fermentation technology flexibilization: n-butanol and ethanol production from eucalyptus. 2017. 1 recurso online (159 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/325671>. Acesso em: 2 set. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/325671
Universidade Estadual de Campinas
14.
Rocha, Rodolfo Cavaliere da, 1990-.
A numerical study on the combustion of ethanol, n-butanol and their blends : Estudo numérico da combustão de etanol, n-butanol e suas misturas.
Degree: Faculdade de Engenharia Mecânica; Programa de Pós-Graduação em Engenharia Mecânica, 2016, Universidade Estadual de Campinas
URL: ROCHA,
Rodolfo
Cavaliere
da.
A
numerical
study
on
the
combustion
of
ethanol,
n-butanol
and
their
blends:
Estudo
numérico
da
combustão
de
etanol,
n-butanol
e
suas
misturas.
2016.
1
recurso
online
(90
p.).
Dissertação
(mestrado)
-
Universidade
Estadual
de
Campinas,
Faculdade
de
Engenharia
Mecânica,
Campinas,
SP.
Disponível
em:
<http://www.repositorio.unicamp.br/handle/REPOSIP/325016>.
Acesso
em:
30
ago.
2018.
;
http://repositorio.unicamp.br/jspui/handle/REPOSIP/325016
► Orientador: Rogério Gonçalves dos Santos
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
Made available in DSpace on 2018-08-31T02:33:21Z (GMT). No. of…
(more)
▼ Orientador: Rogério Gonçalves dos Santos
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
Made available in DSpace on 2018-08-31T02:33:21Z (GMT). No. of bitstreams: 1 Rocha_RodolfoCavaliereDa_M.pdf: 2899531 bytes, checksum: d29669a3fca994bd6bb9bb1bcb1ba83b (MD5) Previous issue date: 2016
Resumo: O álcool n-butanol é uma substância orgânica que tem sido proposta como combustível alternativo para motores à combustão interna. Melhorias em seu processo de produção como biocombustível, por meio de processos de fermentação ABE, a partir da biomassa, chamam a atenção para sua sustentabilidade econômica e ambiental; por outro lado, suas características físico-químicas e de queima, próximas à da gasolina e do diesel comerciais, sugerem seu uso combinado ou como substituto dos mesmos. Apesar disso, ainda se sabe pouco acerca das características de sua combustão, motivando a pesquisa na área. O etanol, por
sua vez, é um biocombustível extensamente utilizado em motores de ciclo Otto, principalmente no Brasil e nos Estados Unidos, sendo produzido por processos eficientes de fermentação, inclusive como subproduto da produção de butanol no processo ABE; por suas características físico-químicas, de produção e queima, propõe-se que seja misturado ao n-butanol em aplicações comerciais. O presente estudo compara esquemas de cinética química da queima em ar de n-butanol e etanol, entre si e em relação a dados experimentais disponíveis na literatura, por meio da simulação de chama laminar unidimensional pré-misturada no pacote REGATH (EM2C/CNRS - França). Em seguida, um novo esquema combinado é desenvolvido, que apresenta boa concordância com resultados experimentais da literatura para ambos os combustíveis nessas condições. Por fim, são levantadas curvas características da chama de misturas entre os compostos em diversas proporções, que poderão ser comparadas com dados experimentais em futuros
trabalhos
The alcohol n-butanol is an organic substance being proposed as an alternative fuel for internal combustion engines. Improvements in its production as a biofuel, through ABE fermentation processes, grow attention for its economic and environmental sustainability; on the other hand, its physicochemical and burning characteristics, close to those of commercial gasoline and diesel, suggest its usage as an additive or a substitute fuel. However, relatively few is known about its combustion characteristics, thus motivating research in that area. Ethanol, instead, is a biofuel widely used in Otto engines, especially in Brazil and the United States, being produced by efficient fermentation processes, and is occasionally a by-product of the butanol formation (ABE process); due to its physicochemical, burning and production characteristics, the addition of this fuel to butanol in commercial applications is proposed. The present study compares chemical kinetic schemes for the
burning on air of n-butanol and ethanol, between each other and against experimental data available in the…
Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS, Santos, Rogério Gonçalves dos, 1978-, Bizzo, Waldir Antônio, Júnior, Amir Antônio de Oliveira.
Subjects/Keywords: Combustão; Cinética química; Etanol; Butanol; Combustion; Chemical kinetics; Ethanol; Butanol
Record Details
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Share »
Record Details
Similar Records
Cite
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rocha, Rodolfo Cavaliere da, 1. (2016). A numerical study on the combustion of ethanol, n-butanol and their blends : Estudo numérico da combustão de etanol, n-butanol e suas misturas. (Masters Thesis). Universidade Estadual de Campinas. Retrieved from ROCHA, Rodolfo Cavaliere da. A numerical study on the combustion of ethanol, n-butanol and their blends: Estudo numérico da combustão de etanol, n-butanol e suas misturas. 2016. 1 recurso online (90 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/325016>. Acesso em: 30 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/325016
Chicago Manual of Style (16th Edition):
Rocha, Rodolfo Cavaliere da, 1990-. “A numerical study on the combustion of ethanol, n-butanol and their blends : Estudo numérico da combustão de etanol, n-butanol e suas misturas.” 2016. Masters Thesis, Universidade Estadual de Campinas. Accessed April 15, 2021.
ROCHA, Rodolfo Cavaliere da. A numerical study on the combustion of ethanol, n-butanol and their blends: Estudo numérico da combustão de etanol, n-butanol e suas misturas. 2016. 1 recurso online (90 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/325016>. Acesso em: 30 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/325016.
MLA Handbook (7th Edition):
Rocha, Rodolfo Cavaliere da, 1990-. “A numerical study on the combustion of ethanol, n-butanol and their blends : Estudo numérico da combustão de etanol, n-butanol e suas misturas.” 2016. Web. 15 Apr 2021.
Vancouver:
Rocha, Rodolfo Cavaliere da 1. A numerical study on the combustion of ethanol, n-butanol and their blends : Estudo numérico da combustão de etanol, n-butanol e suas misturas. [Internet] [Masters thesis]. Universidade Estadual de Campinas; 2016. [cited 2021 Apr 15].
Available from: ROCHA, Rodolfo Cavaliere da. A numerical study on the combustion of ethanol, n-butanol and their blends: Estudo numérico da combustão de etanol, n-butanol e suas misturas. 2016. 1 recurso online (90 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/325016>. Acesso em: 30 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/325016.
Council of Science Editors:
Rocha, Rodolfo Cavaliere da 1. A numerical study on the combustion of ethanol, n-butanol and their blends : Estudo numérico da combustão de etanol, n-butanol e suas misturas. [Masters Thesis]. Universidade Estadual de Campinas; 2016. Available from: ROCHA, Rodolfo Cavaliere da. A numerical study on the combustion of ethanol, n-butanol and their blends: Estudo numérico da combustão de etanol, n-butanol e suas misturas. 2016. 1 recurso online (90 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/325016>. Acesso em: 30 ago. 2018. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/325016
15.
Steffens, Cristine Munari.
Avaliação de catalisadores de nióbio na reação de desidratação de 1-butanol.
Degree: 2018, Brazil
URL: http://hdl.handle.net/10183/179586
► Óxido e fosfato de nióbio, calcinados em diferentes temperaturas, foram usados como catalisadores na reação de desidratação de 1-butanol, onde o efeito da temperatura de…
(more)
▼ Óxido e fosfato de nióbio, calcinados em diferentes temperaturas, foram usados como catalisadores na reação de desidratação de 1-butanol, onde o efeito da temperatura de reação, da massa de catalisador e da vazão de butanol sobre a conversão e seletividade a butenos foram avaliadas através de um plano experimental. Foram caracterizadas as propriedades cristalográficas dos catalisadores. A maioria dos catalisadores apresentaram uma estrutura amorfa, mas algumas amostras apresentaram uma estrutura cristalina quando calcinadas em maiores temperaturas, 500 e 850 °C para o NbO e NbP, respectivamente. Nos testes reacionais, observou-se que o aumento da temperatura de calcinação dos catalisadores reduziu a conversão de 1-butanol. O catalisador fosfato de nióbio apresentou maior atividade, já que foi obtida uma conversão similar à do óxido de nióbio com uma massa 5 vezes menor, indicando a presença de sítios ácidos mais ativos. Além disso, a variável
reacional que teve maior efeito na conversão foi a vazão de alimentação de 1-butanol; e seu aumento causou um decréscimo nos valores de conversão. Este comportamento indicou que a ordem aparente da reação é menor que um, o que foi confirmado por um modelo cinético baseado em lei de potência, o qual ajustado aos dados experimentais resultou em uma ordem aparente em torno de zero Equações fenomenológicas de velocidade de reação baseadas no modelo LHHW foram desenvolvidos. O teste estatístico F de Fisher foi utilizado para comparar os modelos fenomenológicos obtidos: para o óxido de nióbio calcinado em 400 °C o modelo heterogêneo que leva em conta apenas a adsorção de butanol foi considerado o mais adequado; para o fosfato de nióbio calcinado em 400 °C o modelo heterogêneo que leva em conta a adsorção de butanol e de água foi o mais adequado. Para ambos os catalisadores, com exceção do NbO calcinado em 500 °C, foi observada uma significativa isomerização de 1-buteno a 2-buteno,
principalmente nas condições que foi obtida uma maior conversão de butanol. Este fato comprova a elevada força ácida destes catalisadores. A seletividade a 2-buteno foi maior ou igual a 1-buteno em todas as temperaturas e condições de reação com fosfato de nióbio. Para o óxido de nióbio, a seletividade a 2-buteno foi maior em poucas condições reacionais.
Niobium oxide and phosphate, calcined at different temperatures, were used as catalysts in the 1-butanol dehydration reaction, where the effect of reaction temperature, catalyst mass and butanol flow rate on conversion and selectivity to butenes were evaluated through an experimental design. The catalysts crystallographic properties were characterized. Most catalysts presented an amorphous structure, but some samples presented a crystalline structure when calcined at higher temperatures, 500 and 850 °C for NbO and NbP, respectively. In the reaction testes, it was observed that the increase in the catalysts calcination temperature
decreased the 1-butanol conversion. The niobium phosphate catalyst presented higher activity, since it was obtained a similar…
Advisors/Committee Members: Schwaab, Marcio, Coutinho, Elisa Barbosa.
Subjects/Keywords: Butanol; Nióbio; Desidratação; Catalisadores; Dehydration; Butanol; Niobium; Kinetic modelling
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APA (6th Edition):
Steffens, C. M. (2018). Avaliação de catalisadores de nióbio na reação de desidratação de 1-butanol. (Masters Thesis). Brazil. Retrieved from http://hdl.handle.net/10183/179586
Chicago Manual of Style (16th Edition):
Steffens, Cristine Munari. “Avaliação de catalisadores de nióbio na reação de desidratação de 1-butanol.” 2018. Masters Thesis, Brazil. Accessed April 15, 2021.
http://hdl.handle.net/10183/179586.
MLA Handbook (7th Edition):
Steffens, Cristine Munari. “Avaliação de catalisadores de nióbio na reação de desidratação de 1-butanol.” 2018. Web. 15 Apr 2021.
Vancouver:
Steffens CM. Avaliação de catalisadores de nióbio na reação de desidratação de 1-butanol. [Internet] [Masters thesis]. Brazil; 2018. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/10183/179586.
Council of Science Editors:
Steffens CM. Avaliação de catalisadores de nióbio na reação de desidratação de 1-butanol. [Masters Thesis]. Brazil; 2018. Available from: http://hdl.handle.net/10183/179586
16.
Lalitha Devi, Gottumukkala.
Biobutanol from lignocellulosic biomass by a novel Clostridium sporogenes BE01.
Degree: 2014, Cochin University of Science and Technology
URL: http://dyuthi.cusat.ac.in/purl/5009
► In the current study, a novel non-acetone forming butanol and ethanol producer Was isolated and identified. Based on the 16s rDNA sequence BLAST and phylogenetic…
(more)
▼ In the current study, a novel non-acetone forming butanol and ethanol producer
Was isolated and identified. Based on the 16s rDNA sequence BLAST and phylogenetic analyses, it was found to have high similarity with the reported hydrogen producing strains of Clostridium sporogenes. Biochemical studies revealed that it is lipase and protease positive. The lipolytic and proteolytic properties are the very important characteristics of Clostridium sporogenes. Sugar utilization profile studies were positive for glucose, saccharose, cellobiose and weakly positive result to xylose. This study demonstrated C. sporogenes BE01, an isolate from NIIST is having potential to compete with existing, well known butanol producers with the advantage of no acetone in the final solvent mixture. Rice straw hydrolysate is a potent source of substrate for butanol production by C. sporogenes BE01. Additional supplementation of vitamins and minerals were avoided by using rice straw hydrolysate as substrate. Its less growth, due to the inhibitors present in the hydrolysate and also inhibition by products resulted in less efficient conversion of sugars to butanol. Calcium carbonate played an important role in improving the butanol production, by providing the buffering action during fermentation and stimulating the electron transport mediators and redox reactions favoring butanol production. Its capability to produce acetic acid, butyric acid and hydrogen in significant quantities during butanol production adds value to the conversion process of lignocellulosic biomass to butanol. High cell density fermentation by immobilizing the cells on to ceramic particles improved the solvents and VFA production. Reduced sugar utilization from the concentrated hydrolysate could be due to accumulation of inhibitors in the hydrolysate during concentration. Two-stage fermentation was very efficient with immobilized cells
and high conversions of sugars to solvents and VFAs were achieved. The information obtained from the study would be useful to develop a feasible technology for conversion of lignocellulosic biomass to biobutanol.
Cochin University Of Science And Technology
Subjects/Keywords: Butanol; History of ABE fermentation; Clostridium sp
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APA (6th Edition):
Lalitha Devi, G. (2014). Biobutanol from lignocellulosic biomass by a novel Clostridium sporogenes BE01. (Thesis). Cochin University of Science and Technology. Retrieved from http://dyuthi.cusat.ac.in/purl/5009
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lalitha Devi, Gottumukkala. “Biobutanol from lignocellulosic biomass by a novel Clostridium sporogenes BE01.” 2014. Thesis, Cochin University of Science and Technology. Accessed April 15, 2021.
http://dyuthi.cusat.ac.in/purl/5009.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lalitha Devi, Gottumukkala. “Biobutanol from lignocellulosic biomass by a novel Clostridium sporogenes BE01.” 2014. Web. 15 Apr 2021.
Vancouver:
Lalitha Devi G. Biobutanol from lignocellulosic biomass by a novel Clostridium sporogenes BE01. [Internet] [Thesis]. Cochin University of Science and Technology; 2014. [cited 2021 Apr 15].
Available from: http://dyuthi.cusat.ac.in/purl/5009.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lalitha Devi G. Biobutanol from lignocellulosic biomass by a novel Clostridium sporogenes BE01. [Thesis]. Cochin University of Science and Technology; 2014. Available from: http://dyuthi.cusat.ac.in/purl/5009
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Ryerson University
17.
Mohtasebi, Banafsheh.
Enhanced Green Production of Biobutanol By Novel Fusants Of Two And Three Clostridia.
Degree: 2013, Ryerson University
URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A2179
► Protoplast fusion, which is a novel genetic engineering approach, was developed between mesophilic and thermophilic butanol producing bacteria to enhance production of biobutanol as a…
(more)
▼ Protoplast fusion, which is a novel genetic engineering approach, was developed between mesophilic and thermophilic
butanol producing bacteria to enhance production of biobutanol as a green energy resource. Three strains of anaerobic gram-positive clostridia were fused through a protoplast fusion technique to produce biobutanol from wheat straw as a feedstock during the process of Simultaneous Saccharification and Fermentation (SSF). These strains have the natural enzymatic ability for biobutanol production, and include Clostridium beijerinckii (ATCC BA101), Clostridium thermocellum, and Thermoanaerobacterium saccharolyticum. The objective of the present study was to increase enzymatic activity during saccharification by raising the temperature of fermentation to increase biobutanol production. Results showed that protoplast fusion of thermophilic and mesophilic clostridia have led to improving thermostability in a fermentation medium at 45°C. This represents the optimum temperature for enzymatic hydrolysis. Results also showed that the fused strain produced essential hydrolysis enzymes, which eliminated the need to add any enzymes during the hydrolysis step. Furthermore, results in the present study demonstrated that the fused culture of bacteria was able to tolerate the elevated concentration of acetone,
butanol, and ethanol during production, which resulted in higher biobutanol production of 13.8 g/L. This study included a comparison to the coculture as a benchmark to account for the effects of protoplast fusion.
Advisors/Committee Members: Ryerson University (Degree grantor).
Subjects/Keywords: Biomass energy – Canada; Butanol; Biomass conversion; Clostridium
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APA (6th Edition):
Mohtasebi, B. (2013). Enhanced Green Production of Biobutanol By Novel Fusants Of Two And Three Clostridia. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A2179
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mohtasebi, Banafsheh. “Enhanced Green Production of Biobutanol By Novel Fusants Of Two And Three Clostridia.” 2013. Thesis, Ryerson University. Accessed April 15, 2021.
https://digital.library.ryerson.ca/islandora/object/RULA%3A2179.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mohtasebi, Banafsheh. “Enhanced Green Production of Biobutanol By Novel Fusants Of Two And Three Clostridia.” 2013. Web. 15 Apr 2021.
Vancouver:
Mohtasebi B. Enhanced Green Production of Biobutanol By Novel Fusants Of Two And Three Clostridia. [Internet] [Thesis]. Ryerson University; 2013. [cited 2021 Apr 15].
Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2179.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mohtasebi B. Enhanced Green Production of Biobutanol By Novel Fusants Of Two And Three Clostridia. [Thesis]. Ryerson University; 2013. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2179
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Ryerson University
18.
Nedaff, Hadeel A.
Optimal Sugar Compostitions And Conditions For Enhanced Biobutanol Bioproduction From Agriculture Residues.
Degree: 2010, Ryerson University
URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1888
► Production of alternative non-fossil biofuels based on renewable resources has been the focus of research in the past few decades due to its environmental and…
(more)
▼ Production of alternative non-fossil biofuels based on renewable resources has been the focus of research in the past few decades due to its environmental and economical advantages. The current study focuses on testing two Clostridia strains towards production of
butanol. The work was performed in three parts: the first part includes introducing C acetobutylicum ATCC 4259 for
butanol production and identifying the proper working conditions for this strain. The following part includes extending investigation of production to examine C. beijerinckiiBA101 and compare with results obtained from C. acetobutylicum. In the last part, an optimization study was conducted on a presently derived mathematical model in order to predict the best sugar composition in the feedstock for maximum production of
butanol. Results showed that the agriculture residues are potential biomass resource for biofuel industry sin both Clostridia strains were successfully able to utilize all types of agricultural sugars including hexose and pentose. However, using C. beijerinkckii resulted in 53% higher
butanol concentration than using introduced C. acetobutylicum. The yield was fairly comparable, while high acid accumulation found when using C. acetobutylicum made this strain inapplicable to anaerobic batch fermentation without effective system of pH control.
Advisors/Committee Members: Dahman, Yaser (Thesis advisor), Turcotte, Ginette (Thesis advisor), Ryerson University (Degree grantor).
Subjects/Keywords: Butanol; Fermentation – Simulation methods; Agricultural biotechnology
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APA (6th Edition):
Nedaff, H. A. (2010). Optimal Sugar Compostitions And Conditions For Enhanced Biobutanol Bioproduction From Agriculture Residues. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1888
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Nedaff, Hadeel A. “Optimal Sugar Compostitions And Conditions For Enhanced Biobutanol Bioproduction From Agriculture Residues.” 2010. Thesis, Ryerson University. Accessed April 15, 2021.
https://digital.library.ryerson.ca/islandora/object/RULA%3A1888.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nedaff, Hadeel A. “Optimal Sugar Compostitions And Conditions For Enhanced Biobutanol Bioproduction From Agriculture Residues.” 2010. Web. 15 Apr 2021.
Vancouver:
Nedaff HA. Optimal Sugar Compostitions And Conditions For Enhanced Biobutanol Bioproduction From Agriculture Residues. [Internet] [Thesis]. Ryerson University; 2010. [cited 2021 Apr 15].
Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1888.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nedaff HA. Optimal Sugar Compostitions And Conditions For Enhanced Biobutanol Bioproduction From Agriculture Residues. [Thesis]. Ryerson University; 2010. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1888
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
19.
Sawang Loyarkat.
Production of acetone-Butanol-Ethanol from volatile fatty acid and decanter cake hydrolysate by Clostridium spp.
Degree: คณะอุตสาหกรรมเกษตร ภาควิชาเทคโนโลยีอาหาร, 2014, Prince of Songkla University
URL: http://kb.psu.ac.th/psukb/handle/2010/10137
Subjects/Keywords: Butanol;
Acetone;
Alcohol
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APA (6th Edition):
Loyarkat, S. (2014). Production of acetone-Butanol-Ethanol from volatile fatty acid and decanter cake hydrolysate by Clostridium spp.
(Thesis). Prince of Songkla University. Retrieved from http://kb.psu.ac.th/psukb/handle/2010/10137
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Loyarkat, Sawang. “Production of acetone-Butanol-Ethanol from volatile fatty acid and decanter cake hydrolysate by Clostridium spp.
” 2014. Thesis, Prince of Songkla University. Accessed April 15, 2021.
http://kb.psu.ac.th/psukb/handle/2010/10137.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Loyarkat, Sawang. “Production of acetone-Butanol-Ethanol from volatile fatty acid and decanter cake hydrolysate by Clostridium spp.
” 2014. Web. 15 Apr 2021.
Vancouver:
Loyarkat S. Production of acetone-Butanol-Ethanol from volatile fatty acid and decanter cake hydrolysate by Clostridium spp.
[Internet] [Thesis]. Prince of Songkla University; 2014. [cited 2021 Apr 15].
Available from: http://kb.psu.ac.th/psukb/handle/2010/10137.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Loyarkat S. Production of acetone-Butanol-Ethanol from volatile fatty acid and decanter cake hydrolysate by Clostridium spp.
[Thesis]. Prince of Songkla University; 2014. Available from: http://kb.psu.ac.th/psukb/handle/2010/10137
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
20.
Yılmaz, Seda.
lma posasının biyobütanol üretiminde kullanılması üzerine bir araştırma: A study on biobutanol production from apple pomace.
Degree: Mühendislik Fakültesi, 2016, University of Ankara
URL: http://hdl.handle.net/20.500.12575/69285
► Bu çalışmada, elma suyu atığı olan elma posasına uygulanan enzimatik hidrolizin, C. beijerinckii DSM 6422 ve C. acetobutylicum DSM 792 suşları ile gerçekleştirilen aseton, bütanol…
(more)
▼ Bu çalışmada, elma suyu atığı olan elma posasına uygulanan enzimatik hidrolizin, C. beijerinckii DSM 6422 ve C. acetobutylicum DSM 792 suşları ile gerçekleştirilen aseton, bütanol ve etanol (ABE) üretimi üzerine etkisi araştırılmıştır. Sitrat tampon içerisinde değişen konsantrasyonlarda (% 2, 4, 6, 8 ve 10) hazırlanan elma posasına uygulanan iki enzim kullanılarak (Accelerase 1500 ve Pektinex UF) gerçekleştirilen enzimatik hidroliz sonrasında iki farklı Clostridium suşu ile bütanol ve toplam solvent üretimleri araştırılmıştır. Elde edilen sonuçlara göre, C. beijerinckii DSM 6422 suşunun, % 10 kurutulmuş elma posası ile hazırlanan ve süzme işlemi uygulamadan hazırlanan besiyerinde 4.24 g/L bütanol ve 5.15 g/L toplam solvent ürettiği saptanmıştır.
In the present study, enzymatic hydrolysis applied to the apple juice waste which is dried apple pulp, and its effect on the production of acetone,
butanol and ethanol (ABE) by the C. beijerinckii DSM 6422 and C. acetobutylicum DSM 792 type strains, was investigated.
Butanol and total solvent production amounts of the two different Clostridium strains were determined within the medium prepared using two different enzymes (Accelerase 1500 and Pektinex UF) with varying concentrations of apple pomace (2 %, 4, 6, 8 and 10) in the citrate tampon. According to the obtained results, C. beijerinckii DSM 6422 strain produced 4.24 g/L
butanol and 5.15 g/L total solvent within the medium prepared using 10 % dried apple pulp without filtering process.
Advisors/Committee Members: Dönmez, Sedat (advisor).
Subjects/Keywords: Kurutulmuş elma posası; Bütanol; Apple pomace; Butanol
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APA ·
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Manager
APA (6th Edition):
Yılmaz, S. (2016). lma posasının biyobütanol üretiminde kullanılması üzerine bir araştırma: A study on biobutanol production from apple pomace. (Masters Thesis). University of Ankara. Retrieved from http://hdl.handle.net/20.500.12575/69285
Chicago Manual of Style (16th Edition):
Yılmaz, Seda. “lma posasının biyobütanol üretiminde kullanılması üzerine bir araştırma: A study on biobutanol production from apple pomace.” 2016. Masters Thesis, University of Ankara. Accessed April 15, 2021.
http://hdl.handle.net/20.500.12575/69285.
MLA Handbook (7th Edition):
Yılmaz, Seda. “lma posasının biyobütanol üretiminde kullanılması üzerine bir araştırma: A study on biobutanol production from apple pomace.” 2016. Web. 15 Apr 2021.
Vancouver:
Yılmaz S. lma posasının biyobütanol üretiminde kullanılması üzerine bir araştırma: A study on biobutanol production from apple pomace. [Internet] [Masters thesis]. University of Ankara; 2016. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/20.500.12575/69285.
Council of Science Editors:
Yılmaz S. lma posasının biyobütanol üretiminde kullanılması üzerine bir araştırma: A study on biobutanol production from apple pomace. [Masters Thesis]. University of Ankara; 2016. Available from: http://hdl.handle.net/20.500.12575/69285
University of Otago
21.
Hill, Ryan Edward.
The metabolic engineering of Synechocystis sp. PCC 6803 for production of n-butanol
.
Degree: 2013, University of Otago
URL: http://hdl.handle.net/10523/4330
► The cyanobacterium Synechocystis sp. PCC 6803 is an attractive target for engineering novel metabolic pathways for the synthesis of useful compounds directly from CO2 as…
(more)
▼ The cyanobacterium Synechocystis sp. PCC 6803 is an attractive target for engineering novel metabolic pathways for the synthesis of useful compounds directly from CO2 as it is a naturally transformable, oxygenic photoautotroph and the genome has been sequenced. The compound n-
butanol is a potential bio-fuel for direct replacement of petroleum, with little to no adjustment of the current infrastructure, as n-
butanol has similar fuel characteristics to petroleum. To accomplish the aim, an integrative expression system was developed consisting of two plasmids, which integrated at the phaAB and phaEC loci. Integration at the phaEC site eliminated a competing pathway, polyhydroxybutyrate (PHB) biosynthesis. The two plasmids were used to introduce foreign genes into the genome under the control of promoters PphaA and PphaE. The expression system was validated and analysed using a luciferase reporter enzyme. The promoters were found to express under circadian rhythm, expression was increased in the dark and repressed in the light. In addition, under phosphate limitation the luciferase expression was increased three-fold and became constitutively expressed. Expression was strongly up-regulated in the stationary compared to the logarithmic growth phase. The genes for n-
butanol biosynthesis pathway from Clostridium beijerinckii were introduced into Synechocystis sp. PCC 6803 under control of the PphaA and PphaE promoters; however, no
butanol could be detected above background levels. Enzyme assays of the cell lysate showed that two of the enzymes activities could not be detected, indicating either the enzymes were inactive or being expressed below limits of detection. Replacement of the C. beijerinckii Bcd-complex with crotonyl-CoA reductase (Ccr) from Streptomyces collonius, along with codon optimisation of the remaining C. beijerinckii genes, generated strain SynRH-10, which synthesised 36 μg/L of culture in eight days and had a peak output of 14 μg/day/L of culture. The aldehyde dehydrogenase enzyme was identified as a potential bottleneck and will require replacement to improve n-
butanol output. The program Precog was developed to identify additional novel pathways from MetaCyc reaction and compound data. Several novel pathways were identified, in doing so it also identified Ccr as an additional putative bottleneck in the pathway. An engineering strategy and new pathway was proposed, based on the results of this research and from other studies, which could generate a strain capable of synthesising milligram quantities per litre of culture.
Advisors/Committee Members: Eaton-Rye, Julian (advisor).
Subjects/Keywords: cyanobacteria;
Synechocystis;
butanol;
metabolic;
engineering;
biofuel
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APA (6th Edition):
Hill, R. E. (2013). The metabolic engineering of Synechocystis sp. PCC 6803 for production of n-butanol
. (Doctoral Dissertation). University of Otago. Retrieved from http://hdl.handle.net/10523/4330
Chicago Manual of Style (16th Edition):
Hill, Ryan Edward. “The metabolic engineering of Synechocystis sp. PCC 6803 for production of n-butanol
.” 2013. Doctoral Dissertation, University of Otago. Accessed April 15, 2021.
http://hdl.handle.net/10523/4330.
MLA Handbook (7th Edition):
Hill, Ryan Edward. “The metabolic engineering of Synechocystis sp. PCC 6803 for production of n-butanol
.” 2013. Web. 15 Apr 2021.
Vancouver:
Hill RE. The metabolic engineering of Synechocystis sp. PCC 6803 for production of n-butanol
. [Internet] [Doctoral dissertation]. University of Otago; 2013. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/10523/4330.
Council of Science Editors:
Hill RE. The metabolic engineering of Synechocystis sp. PCC 6803 for production of n-butanol
. [Doctoral Dissertation]. University of Otago; 2013. Available from: http://hdl.handle.net/10523/4330
22.
Ogunlabi, Olugbenga.
Metabolic engineering of yeast (Saccharomyces cerevisiae)
with a view to optimising butanol production.
Degree: 2018, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:314685
► Global energetic and environmental concerns have generated interest in the biological systems for the production liquid biofuels. Butanol is one such biofuel, which can be…
(more)
▼ Global energetic and environmental concerns have
generated interest in the biological systems for the production
liquid biofuels.
Butanol is one such biofuel, which can be
naturally produced by some Clostridia species. However, possible
limitations in Clostridial engineering and large-scale fermentation
have led to an examination of other potential organisms that might
house this pathway for
butanol production. As a robust industrial
host and key model organism in the study of fundamental biological
processes, the yeast Saccharomyces cerevisiae has been used to
house the Clostridial ABE-
butanol pathway. However,
butanol yields
and titres in this yeast are relatively low. Therefore, in this
thesis, three distinct strategies were carried out with the goal of
optimising
butanol production in the strain of yeast (previously
constructed in the Ashe lab) bearing the ABE-
butanol pathway: 1.
Mutation of genes involved in the regulation of carbon source
usage. 2. Deletion of genes where the product is involved in the
consumption of cytosolic acetyl-CoA (the starting precursor for the
butanol synthetic pathway). 3. Targeted mutagenesis to improve the
efficiency of the thiolase enzyme, which catalyses the condensation
of 2x acetyl-CoA to initiate the ABE-
butanol synthesis pathway. The
results showed the first two strategies did not lead to
improvements in
butanol yields. However, increases of intracellular
acetyl-CoA were observed in some mutant strains, even though
butanol production did not increase in these strains. In order to
make maximum use of the accumulating cytosolic acetyl-CoA, thiolase
engineering in the
butanol production yeast strain was pursued. The
introduced changes caused an increase in
butanol (about two fold).
Overall, this project has used a minimal engineering approach by
modulation of associated pathways or optimisation of the
heterologous enzyme with a view to improve
butanol production in
yeast. To achieve high and scalable
butanol production in yeast, a
robust approach involving whole synthetic biology - Design, Build
Test, and Learn will need to be adopted to create a more efficient
yeast-
butanol system.
Advisors/Committee Members: ASHE, MARK MP, Grant, Christopher, Ashe, Mark.
Subjects/Keywords: yeast; butanol
…Comparison of acetyl-CoA, butanol and growth levels in the strains..................... 194… …31
Summary of attempts at Yeast butanol production ..43
Preparation of sucrose… …92
Summary of peak growth, ethanol and butanol across the reg1Δ and
snf1Δ strains… …126
Summary of peak growth, ethanol and butanol across the mls1Δ, cit2Δ
and mls1Δ cit2Δ… …strains 162
Summary of peak growth, ethanol and butanol across the…
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ogunlabi, O. (2018). Metabolic engineering of yeast (Saccharomyces cerevisiae)
with a view to optimising butanol production. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:314685
Chicago Manual of Style (16th Edition):
Ogunlabi, Olugbenga. “Metabolic engineering of yeast (Saccharomyces cerevisiae)
with a view to optimising butanol production.” 2018. Doctoral Dissertation, University of Manchester. Accessed April 15, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:314685.
MLA Handbook (7th Edition):
Ogunlabi, Olugbenga. “Metabolic engineering of yeast (Saccharomyces cerevisiae)
with a view to optimising butanol production.” 2018. Web. 15 Apr 2021.
Vancouver:
Ogunlabi O. Metabolic engineering of yeast (Saccharomyces cerevisiae)
with a view to optimising butanol production. [Internet] [Doctoral dissertation]. University of Manchester; 2018. [cited 2021 Apr 15].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:314685.
Council of Science Editors:
Ogunlabi O. Metabolic engineering of yeast (Saccharomyces cerevisiae)
with a view to optimising butanol production. [Doctoral Dissertation]. University of Manchester; 2018. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:314685
Colorado State University
23.
Baumgardner, Marc E.
Characterizing fuel reactivity in advanced internal combustion engines.
Degree: PhD, Mechanical Engineering, 2014, Colorado State University
URL: http://hdl.handle.net/10217/82656
► The urgent need to increase efficiency and reduce exhaust emissions from internal combustion engines has resulted in an increased interest in alternative combustion modes. Premixed…
(more)
▼ The urgent need to increase efficiency and reduce exhaust emissions from internal combustion engines has resulted in an increased interest in alternative combustion modes. Premixed or partially premixed compression ignition modes, such as homogeneous-charge compression ignition (HCCI), reactivity-controlled compression ignition (RCCI) and multi-zone stratified compression ignition (MSCI) have been a particular focus because of their potential to deliver enhanced fuel efficiency and meet exhaust emissions mandates without the addition of costly after-treatment technologies. For HCCI and other single fuel, partially premixed compression ignition schemes such as MSCI, many studies have shown that fuels with characteristics intermediate between gasoline and diesel fuel are necessary. Many researchers have shown, however, that existing industry metrics such as Octane Number and Cetane Number are insufficient to represent fuel ignition characteristics for advanced engine combustion modes. In light of the poor performance of traditional metrics, new methods have been proposed to try and better characterize, order, and rank fuels used in HCCI operation. However, studies have since shown that when a broad array of fuels are considered, these recent metrics fail to adequately define a characteristic HCCI fuel index. Described in this work is an analysis of fuel reactivity in traditional and advanced internal combustion engines. Firstly, conventional engine regimes are broken down to their basic components, providing a framework for investigating the context of fuel reactivity. This analysis allows a novel equation to be formulated which links the historic metrics of Octane Number and Cetane Number. As part of this analysis a parameter, the knock length, is developed which explains the underlying principles of the Research and Motor Octane Number scales and further shows why some fuels test differently in these two methods. The knock length is also used to investigate unusual behavior observed in Methane Number reference fuels data - behavior which traditional concepts such as ignition delay and flame speed are unable to explain on their own. Secondly, this work focuses on the application of fuels such as bio-derived alcohols (ethanol and
butanol) and fatty acid methyl esters in traditional and advanced combustion applications. Reactivity differences between alcohol and petroleum fuels are described and explained. Lastly, a new metric, the HCCI Number, is developed which allows the prediction of combustion timing in HCCI engines, and is highly amenable toward the development of bench-top laboratory apparatuses to facilitate practical adoption by fuel manufactures. Data from 23 different fuel blends tested in Cooperative Fuel Research (CFR) engines, a Fuel Ignition Tester, and a HCCI engine provide the experimental support for the theory presented herein. Additionally, a new chemical-kinetic mechanism is developed and used to describe combustion of n-
butanol/n-heptane fuel mixtures in both conventional and advanced combustion…
Advisors/Committee Members: Marchese, Anthony J. (advisor), Reardon, Ken (committee member), Olsen, Daniel (committee member), Gao, Xinfeng (committee member).
Subjects/Keywords: FIT; n-butanol; HCCI; fuel reactivity
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APA (6th Edition):
Baumgardner, M. E. (2014). Characterizing fuel reactivity in advanced internal combustion engines. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/82656
Chicago Manual of Style (16th Edition):
Baumgardner, Marc E. “Characterizing fuel reactivity in advanced internal combustion engines.” 2014. Doctoral Dissertation, Colorado State University. Accessed April 15, 2021.
http://hdl.handle.net/10217/82656.
MLA Handbook (7th Edition):
Baumgardner, Marc E. “Characterizing fuel reactivity in advanced internal combustion engines.” 2014. Web. 15 Apr 2021.
Vancouver:
Baumgardner ME. Characterizing fuel reactivity in advanced internal combustion engines. [Internet] [Doctoral dissertation]. Colorado State University; 2014. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/10217/82656.
Council of Science Editors:
Baumgardner ME. Characterizing fuel reactivity in advanced internal combustion engines. [Doctoral Dissertation]. Colorado State University; 2014. Available from: http://hdl.handle.net/10217/82656
Michigan State University
24.
Hwang, Chrong-Shiong.
Cyclobutanes in organic systhesis.
Degree: PhD, Department of Chemistry, 1988, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:20223
Subjects/Keywords: Butane; Butanol; Alkanes
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MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hwang, C. (1988). Cyclobutanes in organic systhesis. (Doctoral Dissertation). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:20223
Chicago Manual of Style (16th Edition):
Hwang, Chrong-Shiong. “Cyclobutanes in organic systhesis.” 1988. Doctoral Dissertation, Michigan State University. Accessed April 15, 2021.
http://etd.lib.msu.edu/islandora/object/etd:20223.
MLA Handbook (7th Edition):
Hwang, Chrong-Shiong. “Cyclobutanes in organic systhesis.” 1988. Web. 15 Apr 2021.
Vancouver:
Hwang C. Cyclobutanes in organic systhesis. [Internet] [Doctoral dissertation]. Michigan State University; 1988. [cited 2021 Apr 15].
Available from: http://etd.lib.msu.edu/islandora/object/etd:20223.
Council of Science Editors:
Hwang C. Cyclobutanes in organic systhesis. [Doctoral Dissertation]. Michigan State University; 1988. Available from: http://etd.lib.msu.edu/islandora/object/etd:20223
Delft University of Technology
25.
Oudshoorn, A.
Recovery of bio-based butanol.
Degree: 2012, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958
;
urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958
;
urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958
;
http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958
► Product recovery is crucial for fermentative butanol production. Bio-based fermentative butanol production systems benefit from answering the question to what extent, and in which form,…
(more)
▼ Product recovery is crucial for fermentative
butanol production. Bio-based fermentative
butanol production systems benefit from answering the question to what extent, and in which form, integration between fermentation and product recovery should be applied. The product recovery is applied in order to minimize the impact of
butanol inhibiting during fermentation. This thesis addresses the product recovery methods applicable to
butanol recovery. Two techniques are investigated in more detail, namely liquid demixing based-recovery and adsorptive-recovery. This work further provides a basis for process optimization for integrated product recovery and finally determines the economic potential of
butanol production systems.
Advisors/Committee Members: Van der Wielen, L.A.M..
Subjects/Keywords: butanol; recovery; separation
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Oudshoorn, A. (2012). Recovery of bio-based butanol. (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958
Chicago Manual of Style (16th Edition):
Oudshoorn, A. “Recovery of bio-based butanol.” 2012. Doctoral Dissertation, Delft University of Technology. Accessed April 15, 2021.
http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958.
MLA Handbook (7th Edition):
Oudshoorn, A. “Recovery of bio-based butanol.” 2012. Web. 15 Apr 2021.
Vancouver:
Oudshoorn A. Recovery of bio-based butanol. [Internet] [Doctoral dissertation]. Delft University of Technology; 2012. [cited 2021 Apr 15].
Available from: http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958.
Council of Science Editors:
Oudshoorn A. Recovery of bio-based butanol. [Doctoral Dissertation]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; urn:NBN:nl:ui:24-uuid:e95e5738-6b73-4d59-a4f6-225211b27958 ; http://resolver.tudelft.nl/uuid:e95e5738-6b73-4d59-a4f6-225211b27958
University of Waterloo
26.
Visakhamoorthy, Sona.
Modeling of Biofuelled HCCI Engines with a Parallel Multizone Model.
Degree: 2011, University of Waterloo
URL: http://hdl.handle.net/10012/6171
► With growing concerns over emissions, homogeneous charge compression ignition (HCCI) engines offer a promising solution through reducing NOx and particulate emissions and increasing efficiency. However,…
(more)
▼ With growing concerns over emissions, homogeneous charge compression ignition (HCCI) engines offer a promising solution through reducing NOx and particulate emissions and increasing efficiency. However, this technology is not without its challenges and numerical modeling of these engines can offer some insight into addressing these challenges. This study uses domain decomposition with FORTRAN MPI to subdivide computationally intensive sections of a 10 zone simulation model. Using an Intel i7 quadcore workstation the parallelized model reduced runtimes by half compared to serial computations. From here, two sets of biofuel experimental data were used to improve the validation base of the model. The fuels used were a simulated biomass derived gas (consisting of H2, CH4, CO, CO2, and N2) and a butanol/n-heptane blend. Once calibrated, the model showed good pressure, heat release, and products of incomplete combustion prediction for biogas. NOx emissions were high, however the overall trend was captured. Similarly, once calibrated to the butanol/n-heptane data to account for some of the effects of negative valve overlap (NVO), excellent pressure and heat release predictions were obtained. However, products of incomplete combustion and NOx were low and this was attributed to the inability of the model to properly account for inhomogeneity and all the effects of NVO. Once again though, the overall trend in NOx levels was captured by the model. It was also found that the model does not operate very well near the misfire limit of the engine as it cannot capture the cyclic variability that can occur here. Based on the two new validation cases, it is concluded that once calibrated, the model can be used as a predictive tool for pressure, heat release, and combustion phasing of biofuelled HCCI engines. Furthermore, to improve its predictive capabilities, it is recommended that the model be restructured to incorporate mass transfer between zones, a fixed crevice volume and variable thermal boundary layer, and a CFD solver to improve emissions predictions and reduce reliance on calibration. Finally, changing the zone distribution from ring like zones to lumped stirred reactors is recommended to allow for more realistic modeling of actual experimental HCCI conditions.
Subjects/Keywords: HCCI; multizone; model; biofuel; biogas; butanol
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MLA ·
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Export
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APA (6th Edition):
Visakhamoorthy, S. (2011). Modeling of Biofuelled HCCI Engines with a Parallel Multizone Model. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/6171
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Visakhamoorthy, Sona. “Modeling of Biofuelled HCCI Engines with a Parallel Multizone Model.” 2011. Thesis, University of Waterloo. Accessed April 15, 2021.
http://hdl.handle.net/10012/6171.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Visakhamoorthy, Sona. “Modeling of Biofuelled HCCI Engines with a Parallel Multizone Model.” 2011. Web. 15 Apr 2021.
Vancouver:
Visakhamoorthy S. Modeling of Biofuelled HCCI Engines with a Parallel Multizone Model. [Internet] [Thesis]. University of Waterloo; 2011. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/10012/6171.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Visakhamoorthy S. Modeling of Biofuelled HCCI Engines with a Parallel Multizone Model. [Thesis]. University of Waterloo; 2011. Available from: http://hdl.handle.net/10012/6171
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Louisiana State University
27.
Hoogewind, Adam.
Production of 2-propanol, butanol and ethanol using Clostridium beijerinckii optonii.
Degree: PhD, Life Sciences, 2013, Louisiana State University
URL: etd-01162014-093302
;
https://digitalcommons.lsu.edu/gradschool_dissertations/3497
► With an unpredictable market for gasoline and increased concerns with the pollution created by burning fossil fuels, there is a push for developing suitable replacements…
(more)
▼ With an unpredictable market for gasoline and increased concerns with the pollution created by burning fossil fuels, there is a push for developing suitable replacements for gasoline. While corn-based ethanol production is the most common renewable biofuel produced in the United States, ethanol is not an ideal solution to gasoline replacement due to low energy density, hygroscopic and corrosive properties and inability to purify by distillation alone. Higher alcohols such as butanol do not have the same problems with energy density, purification and hygroscopic and corrosive properties. The fermentation of butanol by using solventogenic Clostridium species, creating acetone, butanol and ethanol (known as ABE fermentation) is one of the world’s oldest industrial fermentations. Since butanol is toxic to Clostridium species at a concentration of only 13 g/L, traditional batch fermentation of butanol with steam stripping distillation is currently not as economical as fermentation and distillation of ethanol. Fermentation using glucose produced higher solvent outputs, rates of productivity and yields than fermentations using sugarcane products as substrates. Butanol and total solvent production using glucose as a substrate averaged 7.2 (+/- 0.7) g/L and 11.2 (+/- 0.9) g/L, respectively. Fermentation using sugarcane molasses and sugarcane juice as substrates produced 6.5 g/L butanol and 9.7 g/L total solvents and 3.1 g/L butanol and 4.0 g/L total solvents, respectively. Production of butanol was increased to 9.1 g/L in a fermentation of glucose when soy oil was used as a coextractant. Fermentations in which the pH dropped below 4.80 showed decreased solvent production and the pH was unable to rise in the same manner as other fermentations. The acid crash was exhibited in several batch fermentations as well as continuous fermentation using an immobilized culture of C. beijerinckii optonii. The acid crash resulted in lowered solvent production, low pH and physiological differences in the cells in the culture. Fermentation using immobilized culture produced a maximum 5.4 g/L butanol and 6.8 g/L total solvents at a dilution rate of 0.18 hr-1 and 25 g/L initial glucose. Higher glucose levels and different dilution rates gave lower butanol and total solvent productions.
Subjects/Keywords: Butanol; Biofuel; Clostridium beijerinckii optonii; Clostridium metabolism
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APA ·
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Export
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APA (6th Edition):
Hoogewind, A. (2013). Production of 2-propanol, butanol and ethanol using Clostridium beijerinckii optonii. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-01162014-093302 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3497
Chicago Manual of Style (16th Edition):
Hoogewind, Adam. “Production of 2-propanol, butanol and ethanol using Clostridium beijerinckii optonii.” 2013. Doctoral Dissertation, Louisiana State University. Accessed April 15, 2021.
etd-01162014-093302 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3497.
MLA Handbook (7th Edition):
Hoogewind, Adam. “Production of 2-propanol, butanol and ethanol using Clostridium beijerinckii optonii.” 2013. Web. 15 Apr 2021.
Vancouver:
Hoogewind A. Production of 2-propanol, butanol and ethanol using Clostridium beijerinckii optonii. [Internet] [Doctoral dissertation]. Louisiana State University; 2013. [cited 2021 Apr 15].
Available from: etd-01162014-093302 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3497.
Council of Science Editors:
Hoogewind A. Production of 2-propanol, butanol and ethanol using Clostridium beijerinckii optonii. [Doctoral Dissertation]. Louisiana State University; 2013. Available from: etd-01162014-093302 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3497
Youngstown State University
28.
Cargal, Timothy Eric.
Proteomics and Genomics of Biobutanol Production from
<i>Clostridium beijerinckii</i>.
Degree: MSin Biological Sciences, Department of Biological Sciences and
Chemistry, 2015, Youngstown State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=ysu1443559123
► The world consumption of energy is increasing at an exponential rate. Furthermore, the availability of our fuel of choice, fossil fuels, is declining, with estimates…
(more)
▼ The world consumption of energy is increasing at an
exponential rate. Furthermore, the availability of our fuel of
choice, fossil fuels, is declining, with estimates that reserves
will be gone within fifty years. As such, the search for
alternative fuel sources has begun. One promising source of energy
is biomass, solar energy stored in the form of sugars by plants.
Currently, the focus is on ethanol as a biomass energy source, but
it is not without its problems. An emerging alternative to ethanol
is
butanol, which is chemically more similar to gasoline.
Exploiting the Acetone-
Butanol-Ethanol Fermentation pathway found
in certain species of bacteria can produce
butanol. However, this
has its own problems in that the
butanol is itself toxic to the
bacteria. We have identified four potential targets for gene
manipulation in order to improve the bacterial resistance to
butanol in order to facilitate the production of more
butanol.
These four genes were G3P, CWBR, PF, and <i>cspA</i>.
These targets have been analyzed at both the protein expression
level and gene expression level. Of these four genes we tested, G3P
showed expression levels as expected, PF did not, and the other two
were inconclusive due to statistical outliers.
Advisors/Committee Members: Walker, Gary (Advisor).
Subjects/Keywords: Biology; Clostridium beijerinckii; Proteomics; Genomics; Biobutanol; Butanol
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APA ·
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Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Cargal, T. E. (2015). Proteomics and Genomics of Biobutanol Production from
<i>Clostridium beijerinckii</i>. (Masters Thesis). Youngstown State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ysu1443559123
Chicago Manual of Style (16th Edition):
Cargal, Timothy Eric. “Proteomics and Genomics of Biobutanol Production from
<i>Clostridium beijerinckii</i>.” 2015. Masters Thesis, Youngstown State University. Accessed April 15, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=ysu1443559123.
MLA Handbook (7th Edition):
Cargal, Timothy Eric. “Proteomics and Genomics of Biobutanol Production from
<i>Clostridium beijerinckii</i>.” 2015. Web. 15 Apr 2021.
Vancouver:
Cargal TE. Proteomics and Genomics of Biobutanol Production from
<i>Clostridium beijerinckii</i>. [Internet] [Masters thesis]. Youngstown State University; 2015. [cited 2021 Apr 15].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ysu1443559123.
Council of Science Editors:
Cargal TE. Proteomics and Genomics of Biobutanol Production from
<i>Clostridium beijerinckii</i>. [Masters Thesis]. Youngstown State University; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ysu1443559123
The Ohio State University
29.
Jiang, Wenyan.
Metabolic and Process Engineering of Clostridia for Biofuel
Production.
Degree: PhD, Molecular, Cellular and Developmental
Biology, 2014, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1400696231
► Recently, with the concerns of unstable crude oil supply, rapid increase in gasoline prices and severe climate changes, higher alcohols (alcohols with more than two…
(more)
▼ Recently, with the concerns of unstable crude oil
supply, rapid increase in gasoline prices and severe climate
changes, higher alcohols (alcohols with more than two carbons) have
gained interests for their potentials in replacing petroleum as new
generation transportation fuels. Among all these candidates,
n-
butanol as a four carbon solvent has received the most attention
because it shares very similar characteristics with gasoline and
can be naturally produced by solventogenic Clostridia via
Acetone-
Butanol-Ethanol (ABE) fermentation. However,
butanol
production by these native producers suffers from low titer and
yield due to inefficient substrate conversion and
butanol
cytotoxicity upon cell growth and metabolism. Also, the necessity
of generating byproducts during fermentation significantly reduces
butanol titer and product selectivity, and therefore, increases the
cost for
butanol recovery through distillation. In order to
commercialize biobutanol as economically as petroleum-based
processes, a more optimized overall fermentation strategy is highly
desirable. Therefore, the goal of this study was to establish
cost-effective fermentation processes for higher alcohols
production through various approaches, including inexpensive
feedstock utilization, process optimization employing external
driving forces, and new strain development. First, the stability of
hyper-
butanol-producing strain Clostridium acetobutylicum JB200 was
validated by long-term repeated batch fermentation with cells
immobilized in a fibrous bed bioreactor using sucrose as substrate.
Its stable fermentation performance using low-cost sugarcane juice
with a high
butanol titer (1620 g/L), yield (~0.21 g/g sucrose) and
productivity (~0.32 g/Lh) indicated that JB200 is a promising
strain for industrial application. Then, the effect of extra
driving forces provided by artificial electron carrier addition on
butanol production by metabolically engineered Clostridium
tyrobutyricum strain CtΔack-adhE2 was studied. The results
suggested that artificial electron carriers can remarkably increase
butanol titer and yield, while reduce the generation of byproducts.
In addition, metabolic engineering of acidogenic C. tyrobutyricum
were conducted to examine its feasibility as an isopropanol
producer. A final isopropanol titer of 4.28 g/L in free-cell
fermentation was achieved and an in vivo fluorescence based gene
expression reporter system was developed to facilitate future gene
manipulation in C. tyrobutyricum and other anaerobic
microorganisms. This project demonstrated that by applying low-cost
substrates, extra driving power as well as strains with high
fermentation performance, the input-output ratio of
butanol
production via fermentation can be further enhanced to compete with
petroleum-based processes. Meanwhile, for isopropanol production,
more studies of solvent-producing gene regulation,
speed-limiting-step enzyme activities, and redox balance in C.
tyrobutyricum are still required.
Advisors/Committee Members: Yang, Shang-Tian (Advisor).
Subjects/Keywords: Chemical Engineering; Biofuels, butanol, isopropanol, fermentation
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APA (6th Edition):
Jiang, W. (2014). Metabolic and Process Engineering of Clostridia for Biofuel
Production. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1400696231
Chicago Manual of Style (16th Edition):
Jiang, Wenyan. “Metabolic and Process Engineering of Clostridia for Biofuel
Production.” 2014. Doctoral Dissertation, The Ohio State University. Accessed April 15, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1400696231.
MLA Handbook (7th Edition):
Jiang, Wenyan. “Metabolic and Process Engineering of Clostridia for Biofuel
Production.” 2014. Web. 15 Apr 2021.
Vancouver:
Jiang W. Metabolic and Process Engineering of Clostridia for Biofuel
Production. [Internet] [Doctoral dissertation]. The Ohio State University; 2014. [cited 2021 Apr 15].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1400696231.
Council of Science Editors:
Jiang W. Metabolic and Process Engineering of Clostridia for Biofuel
Production. [Doctoral Dissertation]. The Ohio State University; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1400696231
30.
Bruno José Arcanjo Gonçalves.
Preparo e caracterização de membranas de matriz mista de PDMS com carvão ativado para separação de soluções aquosas de acetona, 1-butanol e etanol por pervaporação.
Degree: 2015, Universidade Federal de Minas Gerais; UFMG
URL: http://hdl.handle.net/1843/BUBD-9WRHQV
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Na atualidade,…
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Na atualidade, a sociedade tem buscado suprir a demanda de energia e matéria-prima em todos os setores da indústria de maneira sustentável. Com base nessas necessidades, o conceito de biorrefinaria, que consiste no processamento sustentável de biomassa visando à transformação em produtos de valor agregado e energia, tem chamado a atenção da comunidade científica. Neste contexto, o butanol tem se destacado por seu potencial como biocombustível, sendo produzido por fermentação, além de várias outras aplicações industriais. Entretanto, limitações técnicas e econômicas ainda restringem a aplicação comercial desta rota de síntese. O objetivo deste trabalho foi estudar o preparo de membranas de matriz mista para separação de butanol,
etanol e acetona de soluções aquosas. Desta forma, pretende-se propor alternativas a fim de tornar as biorrefinarias economicamente viáveis. A estratégia experimental foi baseada em estudos de separação destes solventes por meio de um processo de permeação através de membranas, a pervaporação. As membranas foram preparadas por meio da adição de carvão ativado a filmes de Poli(dimetilsiloxano), PDMS que é um polímero hidrofóbico, barato e estável, térmica e quimicamente. Os filmes poliméricos foram caracterizados por inchamento, análise termogravimétrica (TGA), espectroscopia de infravermelho por Transformada de Fourier (FTIR), microscopia eletrônica de varredura (MEV), permeação de gases, além da pervaporação de soluções quaternárias de 1-butanol, etanol, acetona e água. Na pervaporação, foram investigados os efeitos de temperatura, porcentagem de carga nas membranas e concentração da alimentação. Os resultados indicaram que as membranas foram preparadas com sucesso, sem que houvesse
separação de fase visível. A membrana contendo 0,5% de carvão apresentou o melhor desempenho, atingindo fluxo de cerca de 28 g.m-2.h-1 e seletividade de 395, mantendo-se a alimentação em aproximadamente 1% de 1-butanol em massa e a temperatura a 25°C (298 K). Em relação às propriedades de transporte, foram observados fluxos de 9,8g/m2.h até 69,6 g/m2.h, enquanto o fator de separação butanol/água foi de até 530, muito superior aos trabalhos similares relatados na literatura.
Currently, the society has sought to meet the demand for energy and raw materials in all sectors of industry in a sustainable way. Based on these needs, the biorefinery concept, which is the sustainable processing of biomass to the transformation into added value products and energy, has drawn the attention of researchers. In this context, 1-butanol has become known for its potential as a biofuel, being produced by fermentation, and for having various other industrial applications. However, technical and
economic constraints also restrict the commercial application of its production. The aim of this study was the…
Advisors/Committee Members: Katia Cecilia de Souza Figueiredo.
Subjects/Keywords: Pervaporação; Butanol; PDMS; Carvão ativado; Engenharia quimica
Record Details
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Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gonçalves, B. J. A. (2015). Preparo e caracterização de membranas de matriz mista de PDMS com carvão ativado para separação de soluções aquosas de acetona, 1-butanol e etanol por pervaporação. (Masters Thesis). Universidade Federal de Minas Gerais; UFMG. Retrieved from http://hdl.handle.net/1843/BUBD-9WRHQV
Chicago Manual of Style (16th Edition):
Gonçalves, Bruno José Arcanjo. “Preparo e caracterização de membranas de matriz mista de PDMS com carvão ativado para separação de soluções aquosas de acetona, 1-butanol e etanol por pervaporação.” 2015. Masters Thesis, Universidade Federal de Minas Gerais; UFMG. Accessed April 15, 2021.
http://hdl.handle.net/1843/BUBD-9WRHQV.
MLA Handbook (7th Edition):
Gonçalves, Bruno José Arcanjo. “Preparo e caracterização de membranas de matriz mista de PDMS com carvão ativado para separação de soluções aquosas de acetona, 1-butanol e etanol por pervaporação.” 2015. Web. 15 Apr 2021.
Vancouver:
Gonçalves BJA. Preparo e caracterização de membranas de matriz mista de PDMS com carvão ativado para separação de soluções aquosas de acetona, 1-butanol e etanol por pervaporação. [Internet] [Masters thesis]. Universidade Federal de Minas Gerais; UFMG; 2015. [cited 2021 Apr 15].
Available from: http://hdl.handle.net/1843/BUBD-9WRHQV.
Council of Science Editors:
Gonçalves BJA. Preparo e caracterização de membranas de matriz mista de PDMS com carvão ativado para separação de soluções aquosas de acetona, 1-butanol e etanol por pervaporação. [Masters Thesis]. Universidade Federal de Minas Gerais; UFMG; 2015. Available from: http://hdl.handle.net/1843/BUBD-9WRHQV
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Open Access Theses and Dissertations
