subject:(3303)

1. Ruiz Pérez, María Olga. Estudio de la separación de ácido valérico y [alfa]-feniglicina de disoluciones acuosas por extracción reactiva con extractante libre y soportado.

Degree: 2011, Universidad de Burgos

URL: http://hdl.handle.net/10259/141

► La investigación que configura esta Tesis Doctoral se ha centrado en el desarrollo de una nueva tecnología híbrida de adsorción y extracción utilizando resinas macroporosas… (more)

▼ La investigación que configura esta Tesis Doctoral se ha centrado en el desarrollo de una nueva tecnología híbrida de adsorción y extracción utilizando resinas macroporosas impregnadas con un extractante selectivo y su aplicación a la separación de ácidos orgánicos y aminoácidos. Estos biocompuestos se encuentran frecuentemente en corrientes residuales de industrias biotecnológicas, en baja concentración y en presencia de un elevado número de compuestos químicos similares. En concreto, el aminoácido fenilglicina es un subproducto en los procesos de fabricación de penicilinas y cefalosporinas. El interés de su recuperación se centra en su reutilización por ser un compuesto de alto valor, a la vez que se eliminan riesgos de contaminación medio ambiental ya que su vertido puede producir eutrofización. Por otra parte, el ácido valérico es un subproducto del proceso de obtención del nylón, su separación requiere una solución adecuada en la optimización del proceso de fabricación del nylón. La finalidad de esta investigación ha sido avanzar en el conocimiento científico y tecnológico, analizando no sólo la viabilidad técnica del proceso de recuperación selectiva de estos biocompuestos, sino la evaluación crítica de las ventajas tecnológicas que presenta para configurarse como un proceso alternativo a los procesos convencionales de separación utilizados a nivel industrial, como son principalmente la extracción líquido-líquido o el uso de resinas de intercambio iónico. __________________________________ The separation of carboxylic acids and amino acids, as they are biocompounds of food and pharmaceutical interest, was carried out with a new extraction technology using extractant-impregnated resins. Biocompounds are extensively used as raw materials in the chemical, pharmaceutical, food and health industries. It is important to recover them from fermentation broths or process effluents for economic and environment reasons in order to minimize water pollution. α-Phenylglycine is an important precursor in the pharmaceutical industry in the production of β-lactam antibiotics. Valeric acid can be found as a by-product in the manufacture of adipic acid. As pure adipic acid is required when it is to be used as the monomer in polymerization process, any valeric acid produced must be removed during the adipic acid purification step. Extraction with impregnated resins (EIR) is a novel hybrid technology which combines the high capacity and selectivity of liquid-liquid extraction technique, with the advantages of separation processes with ion exchange resins, which allow to process high quantities of diluted solutions, using simple and low cost equipments, such as fixed or fluidized beds. This study demonstrates that this new technology is an alternative to the conventional separation processes. Advisors/Committee Members: Escudero Barbero, Isabel, Cabezas Juan, José Luis, Universidad de Burgos. Departamento de Biotecnología y Ciencia de los Alimentos.

Subjects/Keywords: Ingeniería química; Chemical engineering; 3303

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

APA (6^th Edition):

Ruiz Pérez, M. O. (2011). Estudio de la separación de ácido valérico y [alfa]-feniglicina de disoluciones acuosas por extracción reactiva con extractante libre y soportado. (Thesis). Universidad de Burgos. Retrieved from http://hdl.handle.net/10259/141

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

Chicago Manual of Style (16^th Edition):

Ruiz Pérez, María Olga. “Estudio de la separación de ácido valérico y [alfa]-feniglicina de disoluciones acuosas por extracción reactiva con extractante libre y soportado.” 2011. Thesis, Universidad de Burgos. Accessed December 06, 2019. http://hdl.handle.net/10259/141.

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

MLA Handbook (7^th Edition):

Ruiz Pérez, María Olga. “Estudio de la separación de ácido valérico y [alfa]-feniglicina de disoluciones acuosas por extracción reactiva con extractante libre y soportado.” 2011. Web. 06 Dec 2019.

Vancouver:

Ruiz Pérez MO. Estudio de la separación de ácido valérico y [alfa]-feniglicina de disoluciones acuosas por extracción reactiva con extractante libre y soportado. [Internet] [Thesis]. Universidad de Burgos; 2011. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10259/141.

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

Council of Science Editors:

Ruiz Pérez MO. Estudio de la separación de ácido valérico y [alfa]-feniglicina de disoluciones acuosas por extracción reactiva con extractante libre y soportado. [Thesis]. Universidad de Burgos; 2011. Available from: http://hdl.handle.net/10259/141

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

Universidad de las Palmas de Gran Canaria

2. González González, Juan Emilio. Nuevos modelos matemáticos en la simulación analógica de la cinética química.

Degree: 2018, Universidad de las Palmas de Gran Canaria

URL: http://hdl.handle.net/10553/7106

Subjects/Keywords: 3303 ingeniería y tecnología químicas

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

APA (6^th Edition):

González González, J. E. (2018). Nuevos modelos matemáticos en la simulación analógica de la cinética química. (Thesis). Universidad de las Palmas de Gran Canaria. Retrieved from http://hdl.handle.net/10553/7106

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

Chicago Manual of Style (16^th Edition):

González González, Juan Emilio. “Nuevos modelos matemáticos en la simulación analógica de la cinética química.” 2018. Thesis, Universidad de las Palmas de Gran Canaria. Accessed December 06, 2019. http://hdl.handle.net/10553/7106.

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

MLA Handbook (7^th Edition):

González González, Juan Emilio. “Nuevos modelos matemáticos en la simulación analógica de la cinética química.” 2018. Web. 06 Dec 2019.

Vancouver:

González González JE. Nuevos modelos matemáticos en la simulación analógica de la cinética química. [Internet] [Thesis]. Universidad de las Palmas de Gran Canaria; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10553/7106.

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

Council of Science Editors:

González González JE. Nuevos modelos matemáticos en la simulación analógica de la cinética química. [Thesis]. Universidad de las Palmas de Gran Canaria; 2018. Available from: http://hdl.handle.net/10553/7106

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

3. Quesada Molina, Carolina. Advances in the determination of residues of herbicides and cephalosporins in environmental and food samples using miniaturized techniques.

Degree: 2018, Universidad de Granada

URL: http://hdl.handle.net/10481/29946

► Esta tesis doctoral ha sido realizada gracias a la financiación obtenida en los siguientes proyectos: CTM2006-06363, Ministerio de Educación y Ciencia; AGL2007-64313/ALI, Ministerio de Ciencia… (more)

Subjects/Keywords: Herbicidas; Productos químicos agrícolas; Antibióticos; Patología vegetal; Contaminación; Medio ambiente; Residuos; 546; 3303

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APA (6^th Edition):

Quesada Molina, C. (2018). Advances in the determination of residues of herbicides and cephalosporins in environmental and food samples using miniaturized techniques. (Thesis). Universidad de Granada. Retrieved from http://hdl.handle.net/10481/29946

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

Chicago Manual of Style (16^th Edition):

Quesada Molina, Carolina. “Advances in the determination of residues of herbicides and cephalosporins in environmental and food samples using miniaturized techniques.” 2018. Thesis, Universidad de Granada. Accessed December 06, 2019. http://hdl.handle.net/10481/29946.

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

MLA Handbook (7^th Edition):

Quesada Molina, Carolina. “Advances in the determination of residues of herbicides and cephalosporins in environmental and food samples using miniaturized techniques.” 2018. Web. 06 Dec 2019.

Vancouver:

Quesada Molina C. Advances in the determination of residues of herbicides and cephalosporins in environmental and food samples using miniaturized techniques. [Internet] [Thesis]. Universidad de Granada; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10481/29946.

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

Council of Science Editors:

Quesada Molina C. Advances in the determination of residues of herbicides and cephalosporins in environmental and food samples using miniaturized techniques. [Thesis]. Universidad de Granada; 2018. Available from: http://hdl.handle.net/10481/29946

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

Universitat Politècnica de Catalunya

4. Ruiz Planas, Montserrat, 1959-. Development of Techniques Based on Natural Polymers for the Recovery of Precious Metals.

Degree: Departament d'Enginyeria Química, 2002, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6426

► This work contributes to the study of the sorption of precious metals on chitosan, presenting it as a future alternative at an industrial level to… (more)

▼ This work contributes to the study of the sorption of precious metals on chitosan, presenting it as a future alternative at an industrial level to the various existing processes. This study is focused on the recovery of precious metals from hydrochloric acid solutions by techniques based in sorption on natural polymers. Due to the high value and scarcity of precious metals, the need of developing and consolidating new separation and concentration processes is very important. The work presented in this thesis has been planified and based on the contribution given by the research of the properties of chitosan in the sorption of metals, realized in the "Laboratoire Gènie de l'Environnement Industrial de l'Ecole des Mines d'Alès" and by the research of the behaviour of the precious metals in solution, realized in the Department of Chemical Engineering, Universitat Politècnica de Catalunya. To get this investigation under way and to be able to develop it, the first work consisted of the study of the equilibrium conditions and the adsorption kinetics of Pd in chitosan in the form or flakes. This study was carried out using a closed and open reactor system. Once this part of the work had been carried out, the specific interest of this investigation focused on obtaining chitosan derivatives that might improve the sorption capacity for Pd and Pt, by grafting sulphur compounds onto the chitosan, and also including desorption studies for Pd. Owing to the possible transport problems which the high water content of the pearls of chitosan might cause, a drying process was used, comparing the results with those previously obtained (paper V). At the same time the sorption capacity of Pd and Pt was improved, introducing more amino groups in the chitosan chains Finally, owing to the fact that the main part of the work was dedicated to the sorption of Pd and Pt, it was decided to complete this study by extending it to the metals Rh, Ru, Os, Ir and Re. The results obtained are shown in the following papers: I. Palladium Sorption on Glutaradehyde Crosslinked ChitosanN. Ruiz, A. M. Sastre i E. GuibalReactive & Functional Polymers, 45, 155-173 (2000) II. Palladium Sorption on Glutaraldehyde-Crosslinked Chitosan in Fixed-Bed SystemsN. Ruiz, A. M. Sastre, M. C. Zikan i E. GuibalJournal of Applied Polymer Science, 81, 153-165 (2001) III. Platinum and Palladium Sorption on Chitosan DerivativesF. Guibal, M. Ruiz, T. Vincent, A. M. Sastre i R. Navarro MendozaSeparation Science and Technology, 36 (5 & 6), 1017-1040 (2001) IV. Palladium Sorption Using Chitosan DerivativesN. Ruiz, A. M. Sastre, J. R. Degorce-Dumas i E. GuibalTexts of textes des affiche posters. International Water Association (2000). ISBN: 2-9515416-0-0 V. Pd and Pt Recovery Using Chitosan Gel Beads. I. Influence of Drying Process on Diffusion PropertiesN. Ruiz, A. M. Sastre, E. GuibalSeparation Science and Technology (2002), en premsa VI. Pd and Pt Recovery Using Chitosan Gel… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Sastre Requena, Ana M. (Ana María) (director), Guibal, Eric (codirector).

Subjects/Keywords: 2303. Química inorgànica - 3303. Enginyeria i tecnologia químiques; 543

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APA (6^th Edition):

Ruiz Planas, Montserrat, 1. (2002). Development of Techniques Based on Natural Polymers for the Recovery of Precious Metals. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6426

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

Chicago Manual of Style (16^th Edition):

Ruiz Planas, Montserrat, 1959-. “Development of Techniques Based on Natural Polymers for the Recovery of Precious Metals.” 2002. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6426.

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

MLA Handbook (7^th Edition):

Ruiz Planas, Montserrat, 1959-. “Development of Techniques Based on Natural Polymers for the Recovery of Precious Metals.” 2002. Web. 06 Dec 2019.

Vancouver:

Ruiz Planas, Montserrat 1. Development of Techniques Based on Natural Polymers for the Recovery of Precious Metals. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2002. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6426.

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

Council of Science Editors:

Ruiz Planas, Montserrat 1. Development of Techniques Based on Natural Polymers for the Recovery of Precious Metals. [Thesis]. Universitat Politècnica de Catalunya; 2002. Available from: http://hdl.handle.net/10803/6426

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

Universitat Politècnica de Catalunya

5. Benqlilou, Chouaib. Data Reconciliation as a Framework for Chemical Processes Optimization and Control.

Degree: Departament d'Enginyeria Química, 2004, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6437

► This thesis presents, discusses and compares a set of methodologies and several appropriate combinations of them, to provide accurate estimation of process variables, either for… (more)

▼ This thesis presents, discusses and compares a set of methodologies and several appropriate combinations of them, to provide accurate estimation of process variables, either for steady-state or dynamic systems. Firstly, the accuracy of estimated measurements is improved through the proposal of novel Data Reconciliation techniques. The proposal combines data-based and model-based filtering and also consider the presence of time-delays between sampled data. Secondly, measuring network design and its optimal use are addressed. Thus, the measuring device number, their type and their location for optimum reliability and accuracy of measurement at lowest possible cost are determined. The first part of this thesis provides procedures for accuracy estimation in dynamic evolving processes. These procedures rely on combining data-based filtering and model-based filtering. One technique combines a Moving Average filter and a steady-state Data Reconciliation technique sequentially. The resulting estimator presents the important statistic feature of being unbiased. Additionally, this estimator provides high accuracy estimation and good tracking for dramatic dynamic changes of process variables, when compared with other techniques. The other technique performs a wavelet analysis as a former step for reconciling dynamic systems. The wavelet technique catches or extracts the process measurement trends that are later made consistent with the dynamic process model. As a consequence of this technique high estimation accuracy is provided. Additional advantages of applying this technique over the current techniques are the easy handling of distinct sample times and evaluating the variance of dynamic variables. Furthermore, this thesis addresses an important aspect regarding dynamic Data Reconciliation: how to improve the accuracy estimation when the process is faced with the presence of time-delay. This problem was overcome in a simple and efficient way by proposing a time-delay estimation method that works in conjunction with the Measurement Model adopted within the Data Reconciliation technique. The presented time-delay estimation method determines the existing delay by maximizing the correlation of the process variables using genetic algorithms. The second part of this thesis addresses the design of sensor networks, the proposed strategy allows the optimal selection and placement of measuring devices. The proposal deal with different sensor placement aspects: variation in design, retrofit, hardware redundancy and available sensor type. The sensor placement procedure was extended to deal with dynamic systems by taking advantages of dynamic variable classification and dynamic Data Reconciliation. The procedure to locate sensors in dynamic systems aims at maximizing the performance of Kalman filtering using accuracy as its main performance index. To accomplish this, both the measurement noise and the observation matrices are manipulated. The… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Espuña, Antonio (director), Puigjaner Corbella, Lluís (director).

Subjects/Keywords: chemical processes; 3303. Enginyeria i tecnologia química; 54; 62

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APA (6^th Edition):

Benqlilou, C. (2004). Data Reconciliation as a Framework for Chemical Processes Optimization and Control. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6437

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

Chicago Manual of Style (16^th Edition):

Benqlilou, Chouaib. “Data Reconciliation as a Framework for Chemical Processes Optimization and Control.” 2004. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6437.

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

MLA Handbook (7^th Edition):

Benqlilou, Chouaib. “Data Reconciliation as a Framework for Chemical Processes Optimization and Control.” 2004. Web. 06 Dec 2019.

Vancouver:

Benqlilou C. Data Reconciliation as a Framework for Chemical Processes Optimization and Control. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2004. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6437.

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

Council of Science Editors:

Benqlilou C. Data Reconciliation as a Framework for Chemical Processes Optimization and Control. [Thesis]. Universitat Politècnica de Catalunya; 2004. Available from: http://hdl.handle.net/10803/6437

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

Universidad de las Palmas de Gran Canaria

6. Pérez Guerrero, Estefanía. Modelización del equilibrio de fases y otras propiedades, de soluciones de etaoatos de alquilo con alcanos y su empleo en simulación de proceso.

Degree: 2018, Universidad de las Palmas de Gran Canaria

URL: http://hdl.handle.net/10553/22934

Subjects/Keywords: 23 Química; 3303 ingeniería y tecnología químicas

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APA (6^th Edition):

Pérez Guerrero, E. (2018). Modelización del equilibrio de fases y otras propiedades, de soluciones de etaoatos de alquilo con alcanos y su empleo en simulación de proceso. (Thesis). Universidad de las Palmas de Gran Canaria. Retrieved from http://hdl.handle.net/10553/22934

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

Chicago Manual of Style (16^th Edition):

Pérez Guerrero, Estefanía. “Modelización del equilibrio de fases y otras propiedades, de soluciones de etaoatos de alquilo con alcanos y su empleo en simulación de proceso.” 2018. Thesis, Universidad de las Palmas de Gran Canaria. Accessed December 06, 2019. http://hdl.handle.net/10553/22934.

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

MLA Handbook (7^th Edition):

Pérez Guerrero, Estefanía. “Modelización del equilibrio de fases y otras propiedades, de soluciones de etaoatos de alquilo con alcanos y su empleo en simulación de proceso.” 2018. Web. 06 Dec 2019.

Vancouver:

Pérez Guerrero E. Modelización del equilibrio de fases y otras propiedades, de soluciones de etaoatos de alquilo con alcanos y su empleo en simulación de proceso. [Internet] [Thesis]. Universidad de las Palmas de Gran Canaria; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10553/22934.

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

Council of Science Editors:

Pérez Guerrero E. Modelización del equilibrio de fases y otras propiedades, de soluciones de etaoatos de alquilo con alcanos y su empleo en simulación de proceso. [Thesis]. Universidad de las Palmas de Gran Canaria; 2018. Available from: http://hdl.handle.net/10553/22934

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

7. Rubio Rodríguez, Nuria. Supercritical fluid technology for extraction, Concentration & formulation of Omega-3 rich oils: a novel strategy for valorization of fish by-products.

Degree: Departamento de Biotecnología y Ciencia de los Alimentos, 2011, Universidad de Burgos

URL: http://hdl.handle.net/10259/153

► Dados sus beneficios en la salud humana, la demanda de ácidos omega-3, especialmente de EPA y DHA, en la industria alimentaria y farmacéutica ha crecido… (more)

▼ Dados sus beneficios en la salud humana, la demanda de ácidos omega-3, especialmente de EPA y DHA, en la industria alimentaria y farmacéutica ha crecido enormemente en los últimos años. Como consecuencia, hoy en día se plantea la necesidad de impulsar nuevas líneas de investigación destinadas al diseño de procesos de obtención de concentrados ricos en omega-3 de alta calidad, más competitivos, seguros y ecológicos.Recientemente, nuevas tecnologías “verdes” basadas en el uso del dióxido de carbono supercrítico han suscitado un enorme interés en la producción de compuestos de alto valor añadido, como los ácidos omega-3. Por otro lado, la utilización de subproductos de pescado como fuente natural de aceite rico en omega-3 se ha convertido en una acción estratégica para reducir el volumen de residuos e incrementar la competividad del sector pesquero.Siguiendo esta línea, en este trabajo se presenta el estudio de un proceso de obtención de concentrados naturales de omega-3, formulados en polvo, todo ello mediante el uso de la tecnología de fluidos supercríticos (FSC) y utilizando como materia prima subproductos de la industria pesquera. _______________________________ Due to their benefits to human health, the demand of omega-3 fatty acids, especially EPA and DHA, in the food and the pharmaceutical industries has been highly increased in the last years. As consequence, the development of cost-competitive, safe and eco-friendly omega-3 production processes has become an important field of research all over the world.Recently, novel green technologies based on the use of supercritical carbon dioxide have acquired an enormous interest to produce high value compounds such as omega-3. On the other hand, the valorisation of fish by-products as a source of omega-3 rich oil has been considered an outstanding strategy to reduce the waste generation and increase the competitiveness in the fish industry.In this line, the present work deals with an application of supercritical fluids in extraction, concentration and formulation of omega-3 rich oil using fish by-products as a raw material. Advisors/Committee Members: Beltrán Calvo, Sagrario.

Subjects/Keywords: Omega-3; aceite de pescado; subproductos; fluidos supercríticos; dióxido de carbono; fish oil; by-products; supercritical fluids; carbon dioxide; Ingeniería química; Chemical engineering; Alimentos; Food; 3303; 3309

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

APA (6^th Edition):

Rubio Rodríguez, N. (2011). Supercritical fluid technology for extraction, Concentration & formulation of Omega-3 rich oils: a novel strategy for valorization of fish by-products. (Thesis). Universidad de Burgos. Retrieved from http://hdl.handle.net/10259/153

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

Chicago Manual of Style (16^th Edition):

Rubio Rodríguez, Nuria. “Supercritical fluid technology for extraction, Concentration & formulation of Omega-3 rich oils: a novel strategy for valorization of fish by-products.” 2011. Thesis, Universidad de Burgos. Accessed December 06, 2019. http://hdl.handle.net/10259/153.

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

MLA Handbook (7^th Edition):

Rubio Rodríguez, Nuria. “Supercritical fluid technology for extraction, Concentration & formulation of Omega-3 rich oils: a novel strategy for valorization of fish by-products.” 2011. Web. 06 Dec 2019.

Vancouver:

Rubio Rodríguez N. Supercritical fluid technology for extraction, Concentration & formulation of Omega-3 rich oils: a novel strategy for valorization of fish by-products. [Internet] [Thesis]. Universidad de Burgos; 2011. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10259/153.

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

Council of Science Editors:

Rubio Rodríguez N. Supercritical fluid technology for extraction, Concentration & formulation of Omega-3 rich oils: a novel strategy for valorization of fish by-products. [Thesis]. Universidad de Burgos; 2011. Available from: http://hdl.handle.net/10259/153

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

Universitat Politècnica de Catalunya

8. Carol Llopart, Sergio. Una nueva metodología para la predicción de la gravedad en los accidentes industriales aplicando el análisis histórico.

Degree: Departament d'Enginyeria Química, 2001, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6421

► The present work is a study of the severity of industrial accidents involving hazardous substances using historical analysis. The final objective is to use a… (more)

▼ The present work is a study of the severity of industrial accidents involving hazardous substances using historical analysis. The final objective is to use a quantitative methodology to develop a technique to estimate the accidents severity. The hazards that determine the severity of the industrial accidents are much and very complex. Then, a conventional approach using deterministic techniques to develop models to predict the importance of the consequences are inadequate. There are many compilations and publications where it is possible to find a complete accident description. In the last years, using databases and information systems it has been possible to study a large number of accidents from a qualitative point of view. The traditional use of historical analysis of accidents is focused mainly on the qualitative detection of hazards and to the development of quantitative models. This work presents a study of several prestigious compilations of accidents and the application of quantitative techniques to these recompilations to estimate the severity of industrial accidents involving dangerous substances. Chapter 1 (an introduction), analyse the global situation of the industrial safety in Spain and presents the most important techniques used in the risk analysis showing the general structure of this work. Chapter 2 presents a review of the most important risk index to know what factors of risk are very relevant, the influence of each factor in the total level of risk of the plant and the mathematical relation between all of them. To develop this work it has been necessary to select a database where a big number of accidents involving hazardous substances have been compilated. In Chapter 3, it is included a detailed description of the databases and other bibliographic references used to develop this work. Annexes 1 and 2 detail the most important properties of MARS and MHIDAS databases respectively. This description permits also identify several relevant factors of risk in industrial environments working with dangerous substances. For his disposability, easiness of use, quantity and quality of information compiled, this study is focused on the MHIDAS database accidents. Nevertheless, in the analysis of several scenarios, other sources of information have been used. Chapter 4 presents the severity of these accidents as function of several factors available in MHIDAS database system (number of deaths, number of injured, number of evacuated and damage in economic units). This Chapter is a first approximation to the problem using descriptive statistics and its results permits to quantify and verify, using historical analysis of accidents, that the expert judgement shows in a more or less intuitive manner and provides the probabilities of occurrence of accidents of a determined severity. The most important limitation observed in the use of the statistical methods in Chapter 4 is that the analysis developed are uni or bivariate (they work only… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Casal Fàbrega, Joaquim (director), Vílchez Sánchez, Juan Antonio (director).

Subjects/Keywords: accidents industrials; industrial accidents; 3303. Enginyeria i Tecnologia Química; 331

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

APA (6^th Edition):

Carol Llopart, S. (2001). Una nueva metodología para la predicción de la gravedad en los accidentes industriales aplicando el análisis histórico. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6421

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

Chicago Manual of Style (16^th Edition):

Carol Llopart, Sergio. “Una nueva metodología para la predicción de la gravedad en los accidentes industriales aplicando el análisis histórico.” 2001. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6421.

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

MLA Handbook (7^th Edition):

Carol Llopart, Sergio. “Una nueva metodología para la predicción de la gravedad en los accidentes industriales aplicando el análisis histórico.” 2001. Web. 06 Dec 2019.

Vancouver:

Carol Llopart S. Una nueva metodología para la predicción de la gravedad en los accidentes industriales aplicando el análisis histórico. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2001. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6421.

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

Council of Science Editors:

Carol Llopart S. Una nueva metodología para la predicción de la gravedad en los accidentes industriales aplicando el análisis histórico. [Thesis]. Universitat Politècnica de Catalunya; 2001. Available from: http://hdl.handle.net/10803/6421

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

Universitat Politècnica de Catalunya

9. Comaposada i Beringues, Josep. Sorption Isotherms and WaterDiffusitivity in Muscles of Pork Ham at Different NaCl Contents.

Degree: Departament de Màquines i Motors Tèrmics, 1999, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6675

► Dry-cured ham is the most outstanding meat product in Spain nowadays. Drying is the most time consuming stage of its production. Therefore, the knowledge of… (more)

▼ Dry-cured ham is the most outstanding meat product in Spain nowadays. Drying is the most time consuming stage of its production. Therefore, the knowledge of water transfer in this product is necessary in order to optimise the drying technology used. The aim of this thesis is to have a better understanding of the effect of different parameters, concerning the drying process and the product on two properties that control the water transport: water activity (aw) and effective water diffusivity (De). The meat sorption isotherms from Gluteus medius muscle at different temperatures and NaCl contents were determined using the gravimetric method, and were fitted into the predictive Ross's equation and into different empirical equations. The De values, considering the effect of temperature, NaCl content, meat fiber direction, muscle type and high pH meat, were determined using the drying method. The results show that salted meat exhibits sorption isotherms typical for solids containing soluble components. A drop of moisture content around aw 0.75 is observed. At aw lower than 0.70, temperature has only a slight effect on water content equilibrium. At aw above 0.75 water content equilibrium raises with the increase in NaCl content and the decrease in temperature. The predictive Ross's method yielded satisfactory results. Among the empirical equations studied, a modified GAB model for aw<0.75 and a modified Mujica model for aw of 0.75 gave the best accuracy. Different mathematical models were applied to obtain De, which may consider different types of boundary conditions, water content dependence and shrinkage. As temperature increased the De also increased. At low temperatures, the De was less dependent on NaCl contents than at higher ones (as NaCl content increased the De decreased). An equation to determine De in meat considering the effect of temperature and NaCl content was obtained. No significative effect of meat fiber direction and muscle on De has been found. Therefore, the meat behaves as an isotropic product. There was a significative effect of meat pH on De. High pH meat has lower De than normal meat. Therefore, it will be necessary to use pH as a ham classification parameter in order to obtain a more homogeneous drying process. The effect of temperature, NaCl content and pH should be considered to modelling meat drying processes, which will allow us to avoid problems like crust formation and meat structure softening. Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Gou i Botó, Pere (director), Nacenta Anmella, José M. (José María) (tutor).

Subjects/Keywords: isotermes de sorpció; pernil curat; transferència de l'aigua; assecat; carn de porc; 3104. Producció Animal - 3303. Enginyeria i Tecnologia Químiques; 637

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

APA (6^th Edition):

Comaposada i Beringues, J. (1999). Sorption Isotherms and WaterDiffusitivity in Muscles of Pork Ham at Different NaCl Contents. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6675

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

Chicago Manual of Style (16^th Edition):

Comaposada i Beringues, Josep. “Sorption Isotherms and WaterDiffusitivity in Muscles of Pork Ham at Different NaCl Contents.” 1999. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6675.

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

MLA Handbook (7^th Edition):

Comaposada i Beringues, Josep. “Sorption Isotherms and WaterDiffusitivity in Muscles of Pork Ham at Different NaCl Contents.” 1999. Web. 06 Dec 2019.

Vancouver:

Comaposada i Beringues J. Sorption Isotherms and WaterDiffusitivity in Muscles of Pork Ham at Different NaCl Contents. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 1999. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6675.

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

Council of Science Editors:

Comaposada i Beringues J. Sorption Isotherms and WaterDiffusitivity in Muscles of Pork Ham at Different NaCl Contents. [Thesis]. Universitat Politècnica de Catalunya; 1999. Available from: http://hdl.handle.net/10803/6675

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

Universitat Politècnica de Catalunya

10. Brezmes Llecha, Jesús. Diseño de una nariz electrónica para la determinación no destructiva del grado de la maduración de la fruta.

Degree: Departament de Teoria del Senyal i Comunicacions, 2001, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6877

► The monitorization of the ripening state is becoming a very important issue in the fruit industry. In this doctoral thesis, a viability study has been… (more)

▼ The monitorization of the ripening state is becoming a very important issue in the fruit industry. In this doctoral thesis, a viability study has been carried out to see whether an electronic nose could be used as an instrument to assess fruit ripeness in a non-destructive manner. Electronic noses are systems based on an array of gas sensors with overlapped sensitivities. The signal processing algorithms embedded onto these instruments play a very important role since they process the multidimensional information generated at the sensor array to obtain the desired output. In this thesis, a successive approximation to the problem has been carried out. A first prototype was designed to check the viability of the idea. Afterwards, a second instrument was designed to test specific applications. A great amount of the work done dealt with the modification, evaluation and integration of many signal processing algorithms. Among them, different kinds of neural networks (feed-forward with back-propagation training, Fuzzy Art and Fuzzy Artmap), parametric algorithms (such as PLS, partial least squares) and unsupervised projections such as PCA (principal component analysis) were evaluated. The prototypes were tested with different cultivars, all of them climacteric; apples, pears, peaches and nectarines were chosen for the study. In order to do an objective evaluation, the results of the second prototype were compared with the ones obtained with techniques regularly used to assess fruit quality and ripeness. In this way, firmness, acidity, soluble solid contents, ethylene and aromatic production values were correlated with sensor signals from the prototype. Besides classifying fruit regarding to its ripeness state, the second prototype proved there were good correlations between sensor signals and some quality indicators measured on the samples chosen for the study. In fact, the prototype was able to predict some of the quality indicators just using the sensor signals from the non-destructive measurement of the fruit samples chosen. Moreover, it was able to predict with accuracy the optimal harvest date for peaches and nectarines, cultivars whose harvest date is difficult to determine by traditional techniques. The overall results obtained in this study lead to the conclusion that, although there are some problems that have to be addressed before an electronic nose for fruit ripeness assessment may become commercially available, the design of such as system to be operated under laboratory conditions is viable. Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Correig i Blanchar, Xavier (director), Junyent Giralt, Gabriel (tutor).

Subjects/Keywords: nas electrònic; maduració; olfacte electrònic; 1209. Estadística - 3303. Ingeniería y tecnología químicas - 3307. Tecnología electrónica - 3311. Te; 631

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

APA (6^th Edition):

Brezmes Llecha, J. (2001). Diseño de una nariz electrónica para la determinación no destructiva del grado de la maduración de la fruta. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6877

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

Chicago Manual of Style (16^th Edition):

Brezmes Llecha, Jesús. “Diseño de una nariz electrónica para la determinación no destructiva del grado de la maduración de la fruta.” 2001. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6877.

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

MLA Handbook (7^th Edition):

Brezmes Llecha, Jesús. “Diseño de una nariz electrónica para la determinación no destructiva del grado de la maduración de la fruta.” 2001. Web. 06 Dec 2019.

Vancouver:

Brezmes Llecha J. Diseño de una nariz electrónica para la determinación no destructiva del grado de la maduración de la fruta. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2001. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6877.

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

Council of Science Editors:

Brezmes Llecha J. Diseño de una nariz electrónica para la determinación no destructiva del grado de la maduración de la fruta. [Thesis]. Universitat Politècnica de Catalunya; 2001. Available from: http://hdl.handle.net/10803/6877

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

Universitat Politècnica de Catalunya

11. Manyà Cervelló, Joan Josep. Contribució a l'estudi de la cinètica de la piròlisi primària de materials lignocel.lulòsics per a diferents règims d'escalfament.

Degree: Departament d'Enginyeria Química, 2002, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6429

► The development of thermochemical processes for biomass upgrading or treatment requires, among other considerations, a better knowledge of the kinetics concerning the thermal decomposition of… (more)

▼ The development of thermochemical processes for biomass upgrading or treatment requires, among other considerations, a better knowledge of the kinetics concerning the thermal decomposition of the lignocellulosic materials. This kinetic investigation is of wide interest for both, future scientific research and practical applications (i.e., coupling chemical kinetics with conservation equations for reactor simulation, design, and/or operation). The primary pyrolysis of the cellulose can be described using mechanisms of competitive reactions (Broido-Shafizadeh models). However, these mechanisms have the inconvenience that they cannot be validated by thermogravimetric analysis because this technique cannot differentiate between the tar and gas phases. For this reason, the conclusions and kinetic parameters directly obtained from the adoption of these models have been questioned. In this sense, the heat and mass transfer limitations (for the experiments carried out using micro-reactor systems) can dramatically influence the experimental results reliability. Alternatively, a single step, nth-order model can accurately describe the global weight loss of small samples of cellulose at low-to-moderate heating rates. In order to describe the pyrolysis of lignocel·lulosic materials, previous investigations provide evidence that the overall biomass pyrolysis behaves as a superposition of the independent kinetics of the primary components or pseudo-components (summative models). Experimental measurements of the pyrolytic behavior of biomass at high heating rates are an issue of extraordinary interest in the research community due to their application to fast pyrolysis processes. This thesis focuses on the experimental study of the kinetics of primary pyrolysis. Sugarcane bagasse and waste-wood matter have been chosen as two widely different types of lignocellulosic materials. The objectives of this thesis are to obtain experimental data and to propose kinetic models useful for the prediction of the global weight loss at two different heating conditions: slow heating rates (slow/conventional pyrolysis) and fast heating rates (pseudo-isothermal conditions). An experimental study using thermogravimetric analysis has been carried out in order to characterize the kinetics of the slow pyrolysis. Experiments have been carried out at three linear heating rates: 5, 10, and 20 K/min. Assuming the addition of three independent parallel decompositions, these corresponding to three pseudo-components linked to the hemicellulose, cellulose, and lignin, the weight loss associated to the pyrolysis process is simulated. Firstly, an irreversible first-order reaction model is assumed for each pseudo-component. Results show that the simulated curves do not fit well to the experimental data. Consequently, a further kinetic study is carried out for the pure lignin, which demonstrates that the pyrolysis of lignin is better described by a third-order reaction rate law. The reformulation of the lignin kinetic model, and its… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Velo García, Enrique (director), Puigjaner Corbella, Lluís (director).

Subjects/Keywords: biomassa; termogravimetria; cinètica; piròlisi; 3303. Enginyeria i tecnologia química - 2301. Química analítica - 2306. Química orgànica; 536; 54; 544; 66

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

APA (6^th Edition):

Manyà Cervelló, J. J. (2002). Contribució a l'estudi de la cinètica de la piròlisi primària de materials lignocel.lulòsics per a diferents règims d'escalfament. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6429

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

Chicago Manual of Style (16^th Edition):

Manyà Cervelló, Joan Josep. “Contribució a l'estudi de la cinètica de la piròlisi primària de materials lignocel.lulòsics per a diferents règims d'escalfament.” 2002. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6429.

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

MLA Handbook (7^th Edition):

Manyà Cervelló, Joan Josep. “Contribució a l'estudi de la cinètica de la piròlisi primària de materials lignocel.lulòsics per a diferents règims d'escalfament.” 2002. Web. 06 Dec 2019.

Vancouver:

Manyà Cervelló JJ. Contribució a l'estudi de la cinètica de la piròlisi primària de materials lignocel.lulòsics per a diferents règims d'escalfament. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2002. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6429.

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

Council of Science Editors:

Manyà Cervelló JJ. Contribució a l'estudi de la cinètica de la piròlisi primària de materials lignocel.lulòsics per a diferents règims d'escalfament. [Thesis]. Universitat Politècnica de Catalunya; 2002. Available from: http://hdl.handle.net/10803/6429

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

Universitat Politècnica de Catalunya

12. Sequeira, Sebastián Eloy. Real Time Evolution (RTE) for on-line optimisation of continuous and semi-continuous chemical processes.

Degree: Departament d'Enginyeria Química, 2003, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6431

► In general, process control is very effective when the desired operation point has been determined from prior analysis and the control system has sufficient time… (more)

▼ In general, process control is very effective when the desired operation point has been determined from prior analysis and the control system has sufficient time to respond to disturbances. While process control is required for regulating some process variables, the application of these methods may be not appropriate for all important variables. In some situations, the best operating conditions change because of the combined effect of internal and external disturbances, and a fixed control design may not respond properly to these changes. When certain conditions are met, on-line optimisation becomes a suitable choice for tracking the moving optimum. In order to "pursue" that moving optimum, on-line optimisation solves periodically optimisation problems using data coming directly form the plant and a continuously updated model. The most common use of on-line optimisation corresponds to the continuous processes category. This is mainly owed to that steady state models are simpler and easier to develop and validate, besides that continuous processes have commonly high production rates, thus small relative improvements in the process efficiency originates significant economic earnings. Nevertheless, although the use of steady state models greatly simplifies the modelling task, it raises other issues associated with the validity of the steady state assumption. Large-scale applications of on-line optimisation started to spread, however, even when several vendors offer products and services in the area, most of the application address advanced control issues while on-line optimisation is released to a second plane. Industry practitioners have reported that after four decades there has been a progressive improvement in the on-line optimisation methodology, but the same initial weakness or more generally speaking some common causes of poor performance still remain. These issues are directly related with the steady state detection (or disturbance frequency) and the optimisation itself. The objectives of this thesis work are then directed to overcome at least partially the weak points of the current approach. The result is the proposal of an alternative strategy that takes fully advantage of the on-line measurements and looks for periodical improvement rather than a formal optimisation. It is shown how the proposed approach results very efficient and can be applied not only for set-point on-line optimisation but also for taking the on-line decision required in processes that presents decaying performance (aspect typically solved of-line via mathematical programming). The thesis is structured as follows. The first chapter explains the main motivations and objectives of the work, while chapter 2 consists in a literature review that addresses, to some extension, the most significant issues around the on-line optimisation functionality. After that, chapter 3 and chapter 4 introduce two methodologies that use the proposed strategy for on-line optimisation, which is the main thesis contribution. The first one (in… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Graells Sobré, Moisès (director), Puigjaner Corbella, Lluís (director).

Subjects/Keywords: RTE; Real time evolution; Real time optimisation; On-line optimisation; RTO; 3303. Enginyeria i tecnologia químiques; 66

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

APA (6^th Edition):

Sequeira, S. E. (2003). Real Time Evolution (RTE) for on-line optimisation of continuous and semi-continuous chemical processes. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6431

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

Chicago Manual of Style (16^th Edition):

Sequeira, Sebastián Eloy. “Real Time Evolution (RTE) for on-line optimisation of continuous and semi-continuous chemical processes.” 2003. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6431.

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

MLA Handbook (7^th Edition):

Sequeira, Sebastián Eloy. “Real Time Evolution (RTE) for on-line optimisation of continuous and semi-continuous chemical processes.” 2003. Web. 06 Dec 2019.

Vancouver:

Sequeira SE. Real Time Evolution (RTE) for on-line optimisation of continuous and semi-continuous chemical processes. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2003. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6431.

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

Council of Science Editors:

Sequeira SE. Real Time Evolution (RTE) for on-line optimisation of continuous and semi-continuous chemical processes. [Thesis]. Universitat Politècnica de Catalunya; 2003. Available from: http://hdl.handle.net/10803/6431

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

Universitat Politècnica de Catalunya

13. Cantón Padilla, Jorge. Integrated support system for planning and scheduling of batch chemical plants.

Degree: Departament d'Enginyeria Química, 2003, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6434

► The scheduling of batch processes is one of the most complex and important problems faced by a wide variety of processing industries. In spite of… (more)

▼ The scheduling of batch processes is one of the most complex and important problems faced by a wide variety of processing industries. In spite of this importance, scheduling is often a manual procedure, which leads to operation characterized by high inventories, inefficient capital utilization and increased operation costs. There are also reported complains about the lack of powerful, easy-to-use, PC based tools able to solve detailed operational problems, as well as perform high level analysis across the supply chain. This problem has been the focus of an important amount of research work in the recent years, especially from the early 1980's to nowadays, although the industry has been interested in effective ways of solving the scheduling problem since the early 1940's. An extensive work has been done but the complex nature of the scheduling problem results on the lack of a unique solution widely accepted in the industry. This thesis describes a global generic framework for planning and scheduling of batch chemical plants. Different components have been studied: a data model, a timing model, heuristic sequencing and assignment strategies and optimization procedures. One of the strongest points of the framework presented is its modularity. The fact of having the different components of planning and scheduling as separate modules sharing a common data model allows an easy use and adaptation of different techniques that can help solving the scheduling and planning problem in specific cases. This modular approach has been useful when applying the techniques presented to industrial scenarios. Adaptation to specific scenarios choosing the best alternative for each one is not only possible but also easy. The key point for achieving this is to share the common data and timing model (the EON model). The extensible object oriented data model presented in this thesis allows an organized and systematic information management dealing with the detailed representation of batch processes in the chemical industry. The main strength of the EON model is the capability of representation of complex time constraints between operations in the same schedule using simple components. EON model is presented and developed in detail. A methodology for the representation of storage constraints as time constraints as EON constraints is also presented. An iterative procedure allows also to take into account of limited resources as manpower, electricity, etc. Dispatching-like rules have been developed for the calculation of the material balances, the unit assignment and the batch sequencing. The strength of this approach is based in the easy implementation and adaptation to a batch oriented framework. These rules can be applied to empty schedules or to schedules that already contain frozen batches, which represents the actual situation in the plant. This last aspect allows the use of this kind of rules when performing on-line scheduling. Different optimization techniques have been used in this thesis to solve the scheduling… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Espuña, Antonio (director), Puigjaner Corbella, Lluís (director).

Subjects/Keywords: on-line scheduling; planning; reactive scheduling; scheduling; batch; EON; 3303. Enginyeria i tecnologia química - 1207. Investigació operativa; 62; 65; 66

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

APA (6^th Edition):

Cantón Padilla, J. (2003). Integrated support system for planning and scheduling of batch chemical plants. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6434

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

Chicago Manual of Style (16^th Edition):

Cantón Padilla, Jorge. “Integrated support system for planning and scheduling of batch chemical plants.” 2003. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6434.

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

MLA Handbook (7^th Edition):

Cantón Padilla, Jorge. “Integrated support system for planning and scheduling of batch chemical plants.” 2003. Web. 06 Dec 2019.

Vancouver:

Cantón Padilla J. Integrated support system for planning and scheduling of batch chemical plants. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2003. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6434.

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

Council of Science Editors:

Cantón Padilla J. Integrated support system for planning and scheduling of batch chemical plants. [Thesis]. Universitat Politècnica de Catalunya; 2003. Available from: http://hdl.handle.net/10803/6434

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

14. Suárez Gómez, Vanesa. Estudio de la capacidad helicante de ligandos biscarbamato y bistiosemicarbazona frente a iones metálicos.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/12108

Subjects/Keywords: biscarbamato; bistiosemicarbazona; metales de transición; helicatos; sensores; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330303 Procesos químicos

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APA (6^th Edition):

Suárez Gómez, V. (2018). Estudio de la capacidad helicante de ligandos biscarbamato y bistiosemicarbazona frente a iones metálicos. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/12108

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

Chicago Manual of Style (16^th Edition):

Suárez Gómez, Vanesa. “Estudio de la capacidad helicante de ligandos biscarbamato y bistiosemicarbazona frente a iones metálicos.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/12108.

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

MLA Handbook (7^th Edition):

Suárez Gómez, Vanesa. “Estudio de la capacidad helicante de ligandos biscarbamato y bistiosemicarbazona frente a iones metálicos.” 2018. Web. 06 Dec 2019.

Vancouver:

Suárez Gómez V. Estudio de la capacidad helicante de ligandos biscarbamato y bistiosemicarbazona frente a iones metálicos. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/12108.

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

Council of Science Editors:

Suárez Gómez V. Estudio de la capacidad helicante de ligandos biscarbamato y bistiosemicarbazona frente a iones metálicos. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/12108

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

15. García Gen, Santiago. Modelling, Optimisation and Control of Anaerobic Co-digestion Processes.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/13629

Subjects/Keywords: co-digestion anaerobia; modelización; control; Materias::Investigación::33 Ciencias tecnológicas::3302 Tecnología bioquímica::330290 Ingeniería bioquímica; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330303 Procesos químicos; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330311 Química industrial

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

APA (6^th Edition):

García Gen, S. (2018). Modelling, Optimisation and Control of Anaerobic Co-digestion Processes. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/13629

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

Chicago Manual of Style (16^th Edition):

García Gen, Santiago. “Modelling, Optimisation and Control of Anaerobic Co-digestion Processes.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/13629.

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

MLA Handbook (7^th Edition):

García Gen, Santiago. “Modelling, Optimisation and Control of Anaerobic Co-digestion Processes.” 2018. Web. 06 Dec 2019.

Vancouver:

García Gen S. Modelling, Optimisation and Control of Anaerobic Co-digestion Processes. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/13629.

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

Council of Science Editors:

García Gen S. Modelling, Optimisation and Control of Anaerobic Co-digestion Processes. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/13629

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

Universitat Politècnica de Catalunya

16. Picas Barrachina, Josep Anton. Caracterización y optimización de la aleación Ti-O,2Pd para aplicaciones clínicas.

Degree: Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, 2000, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6041

► El objetivo del presente trabajo es el de optimizar las propiedades de la aleación Ti-0.2Pd con la finalidad de que sea una alternativa a las… (more)

▼ El objetivo del presente trabajo es el de optimizar las propiedades de la aleación Ti-0.2Pd con la finalidad de que sea una alternativa a las aleaciones de titanio empleadas actualmente en el campo de los biomateriales. Para ello, se han realizado tratamientos térmicos con el propósito de mejorar sus propiedades mecánicas y resistencia a la corrosión, y tratamientos superficiales para incrementar su resistencia al desgaste. En primer lugar se ha realizado la caracterización microestructural (R.X., microscopía óptica, SEM y TEM) de la aleación Ti-0,2Pd, la cual experimenta una transformación de fase alfa (h.c.) beta (c.c.) que se produce en un intervalo de temperaturas entre 750 y 900 ºC (alfa-transus). En función de la temperatura, varían tanto la forma de nucleación de la fase alfa como la cinética del proceso de transformación. Al someter el material a un tratamiento de temple, la fase presenta una transformación martensítica. El porcentaje de fase martensítica (alfa') aumenta con la temperatura del tratamiento, lo cual comporta un aumento de las propiedades mecánicas de la aleación. Por otra parte, se han realizado estudios potenciodinámicos, comprobando como la adición de Paladio facilita el proceso de pasivación respecto al Titanio sin alear, observándose además, que el tratamiento térmico de temple favorece dicho proceso. En las muestras con una estructura bifásica alfa + alfa' la fase martensítica reacciona de forma preferente durante el ataque químico. La aleación Ti-0,2Pd presenta una notable resistencia al proceso de ataque por picaduras en soluciones de cloruros, no existiendo diferencias significativas entre las muestras sometidas a diferentes tratamientos térmicos. Para mejorar la resistencia al desgaste del material se han realizado tratamientos de nitruración gaseosa a diferentes temperaturas y tiempos; el nitrógeno endurece la superficie de la aleación Ti-0,2Pd debido a la formación de los correspondientes nitruros de titanio y por un endurecimiento por solución sólida. Este incremento de las características mecánicas superficiales se traduce en una disminución del valor del coeficiente de fricción, determinado mediante ensayos de Pin on disc, que comportará una mejora de la resistencia al desgaste del material. Por otra parte, mediante un proceso de deposición en fase vapor, se han obtenido recubrimientos de TiN y (Ti,Al)N, los cuales muestran unas propiedades mecánicas superficiales netamente superiores en comparación con la aleación Ti-0,2Pd y menores valores del coeficiente de fricción. Ahora bien, la adherencia de estas capas no es buena, lo cual comporta el repentino desprendimiento del recubrimiento provocando un proceso de desgaste más rápido de lo esperado. La deposición de los recubrimientos de TiN y (Ti,Al)N sobre un sustrato de la aleación Ti-0,2Pd previamente endurecido por nitruración gaseosa permite mejorar la adherencia de dichos recubrimientos. A partir de los resultados obtenidos en este trabajo, puede proponerse la aleación Ti-0,2Pd tratada… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Gil, F. X. (Francesc Xavier) (director), Forn Alonso, Antonio (director).

Subjects/Keywords: aliatges de titani; recobriments; tractaments tèrmics; tractaments de superfície; resistència a la corrosió; propietats tribológiques; propietats mecàniques; 3303. Enginyeria i tecnologia químiques; 62; 620; 66

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

APA (6^th Edition):

Picas Barrachina, J. A. (2000). Caracterización y optimización de la aleación Ti-O,2Pd para aplicaciones clínicas. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6041

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

Chicago Manual of Style (16^th Edition):

Picas Barrachina, Josep Anton. “Caracterización y optimización de la aleación Ti-O,2Pd para aplicaciones clínicas.” 2000. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6041.

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

MLA Handbook (7^th Edition):

Picas Barrachina, Josep Anton. “Caracterización y optimización de la aleación Ti-O,2Pd para aplicaciones clínicas.” 2000. Web. 06 Dec 2019.

Vancouver:

Picas Barrachina JA. Caracterización y optimización de la aleación Ti-O,2Pd para aplicaciones clínicas. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2000. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6041.

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

Council of Science Editors:

Picas Barrachina JA. Caracterización y optimización de la aleación Ti-O,2Pd para aplicaciones clínicas. [Thesis]. Universitat Politècnica de Catalunya; 2000. Available from: http://hdl.handle.net/10803/6041

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

Universitat Politècnica de Catalunya

17. Ruiz, Diego. Fault diagnosis in chemical plants integrated to the information system.

Degree: Departament d'Enginyeria Química, 2001, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6420

► The pretended contribution of this thesis deals with the implementation of a fault diagnosis system in chemical plants integrated to the monitoring, management and control… (more)

▼ The pretended contribution of this thesis deals with the implementation of a fault diagnosis system in chemical plants integrated to the monitoring, management and control system. The proposed fault diagnosis system consists in a combination of a pattern recognition approach based on artificial neural networks and an inference system based on fuzzy logic. The information needed to develop the fault diagnosis system includes the historical data, the hazard and operability study and the model of the chemical plant. The inputs to the system are the direct or indirect measurements from the plant and the output consists in a signal for each fault (0: no fault; 1: fault). First, the possible faults are defined. The artificial neural network is trained with historical data of faults occurred in the past, with the aim of recognising the respective patterns. In the case that the corresponding historical data are not available, for example due to the no occurrence of the fault, the patterns are obtained through simulation, using the plant model. The fuzzy logic system contains a set of if-then rules that can be of two types: those based in the process knowledge, by the hazard analysis or by the experience with simulation, and those based on the experience with the use of an artificial neural network, previously trained. Other novel aspect is the possibility of artificial neural network training by using signals features that are extracted by its pre-processing using wavelets. This alternative allows a higher fault diagnosis system performance in batch and complex continuous chemical plants. In order to optimise the parameters of the components of the fault diagnosis system, a performance index is proposed. The performance index is also utilised to compare the proposed fault diagnosis system against other methods. The signals provided by the fault diagnosis system can be used by the scheduling system to update the schedule in the most effective way, by the control system to take automated control actions and by plant's operators as support for decision-making. The basis of the translation of the system output, for its utilisation at other levels in the information system, has been settled. The proposed strategy is based on the hazard and operability analysis. The proposed system is the result of successive improvements, by working with different case studies. The academic scenarios correspond to a continuous chemical plant with a recycle stream and a batch reactor. The pilot plant scale cases correspond to scenarios built at UPC: a reactor gasifier, a fed-batch reactor and a multipurpose batch chemical plant. The industrial scenarios correspond to two sugar refineries and a sector of a petrochemical plant. The proposed system shows to be advantageous with respect to other methods in relation to the fastness of the diagnosis and also its capacity to isolate faults. The simplicity of the development and the flexible strategy of implementation of the proposed fault diagnosis system give a promising future to the… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Puigjaner Corbella, Lluís (director).

Subjects/Keywords: fault diagnosis; neural networks; fuzzy logic; chemical plants; 3303. Enginyeria i Tecnologia Química - 3310. Tecnologia Industrial - 3311. Tecnologia de la instrum; 66

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APA (6^th Edition):

Ruiz, D. (2001). Fault diagnosis in chemical plants integrated to the information system. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6420

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

Chicago Manual of Style (16^th Edition):

Ruiz, Diego. “Fault diagnosis in chemical plants integrated to the information system.” 2001. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6420.

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

MLA Handbook (7^th Edition):

Ruiz, Diego. “Fault diagnosis in chemical plants integrated to the information system.” 2001. Web. 06 Dec 2019.

Vancouver:

Ruiz D. Fault diagnosis in chemical plants integrated to the information system. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2001. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6420.

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

Council of Science Editors:

Ruiz D. Fault diagnosis in chemical plants integrated to the information system. [Thesis]. Universitat Politècnica de Catalunya; 2001. Available from: http://hdl.handle.net/10803/6420

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

Universitat Politècnica de Catalunya

18. Perales Lorente, José Francisco. Desulfuración de gas de síntesis a alta temperatura y presión por absorción en óxidos regenerables.

Degree: Departament d'Enginyeria Química, 2002, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6424

► OF THE THESIS This thesis is a contribution to the development of a new method of synthesis gas purification in IGCC plants, that make possible… (more)

▼ OF THE THESIS This thesis is a contribution to the development of a new method of synthesis gas purification in IGCC plants, that make possible a further increase of the energy efficiency, and with this to reduce the emission of greenhouse gas to the atmosphere. It is studied a regenerative absorption in metallic oxides, capable of the elimination of the pollutants from the high-temperature gas, but taking advantage of the energy contents associated with the high temperature process streams, which is lost in the purification by wet route. The objectives and conclusions reached in the development of the thesis work are summarized below: 1- The study of the kinetics of the purification reactions of the synthesis gas, non catalytic absorption reactions, with solid deposition. An exhaustive study has been carried out, to obtain some gas-solid reaction models that envisage a great number of possibilities. It has been created a simulation tool with a reduced number of restrictions that makes possible its use with any reaction that involves changes in the structure of the solid thus ensuring generality and independence of a given type of sorbent. 2- The kinetic parameters have been obtained by thermogravimetric analysis for the concrete case of the available sorbent to be used in the testing of the developed models. 3- Appropriated type of reactors that can be employed in the elimination of the H2S compound of the gas contemplated have been identified and modeled. Special attention has been given to the bubbling fluidized bed reactors, since they possess very good properties of temperature and concentrations homogeneity. It has been accomplished the sensibility study to the variations of the operation parameters. 4- An experimental bubbling fluidized bed reactor plant at bench-scale has been built that has permitted to extract the data from the selected sorbent with guarantees in the results. 5- A sufficient number of experiments to study the behaviour of the selected sorbent under study have been accomplished successfully, and the experimental data obtained have permitted the validation of the different developed models. 6- The specific conclusions reached are: 6.1. The study of the no-catalytic gas-solid reaction of the system studied shows that kinetics of first order describe adequately the absorption and regeneration processes. 6.2. The accomplished experimental tests have shown the influence of the composition of the gas in the kinetics mechanism. The kinetic parameters are very dependent of the composition of the gas, not only of the reactive species, specially of the components that determine the reducing power. 6.3. The thermogravimetric analysis has permitted to identify the values of the different parameters that appear in the gas reaction-solid: the coefficient of superficial intrinsic reaction, the diffusivity of the gas in the formed solid layer, and the gas-solid mass transfer coefficient. 6.4. Using the developed kinetic models, the values of the structural… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Puigjaner Corbella, Lluís (director).

Subjects/Keywords: desulfuració gas; Hot Gas Desulfurisation; BFB Modelling; Bubbling Fluidizided Bed; purificació gas; IGCC; 3303. Enginyeria i tecnologia químiques - 3310. Tecnologia Industrial - 3328. Processos tecnològics; 66

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

APA (6^th Edition):

Perales Lorente, J. F. (2002). Desulfuración de gas de síntesis a alta temperatura y presión por absorción en óxidos regenerables. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6424

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

Chicago Manual of Style (16^th Edition):

Perales Lorente, José Francisco. “Desulfuración de gas de síntesis a alta temperatura y presión por absorción en óxidos regenerables.” 2002. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6424.

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

MLA Handbook (7^th Edition):

Perales Lorente, José Francisco. “Desulfuración de gas de síntesis a alta temperatura y presión por absorción en óxidos regenerables.” 2002. Web. 06 Dec 2019.

Vancouver:

Perales Lorente JF. Desulfuración de gas de síntesis a alta temperatura y presión por absorción en óxidos regenerables. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2002. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6424.

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

Council of Science Editors:

Perales Lorente JF. Desulfuración de gas de síntesis a alta temperatura y presión por absorción en óxidos regenerables. [Thesis]. Universitat Politècnica de Catalunya; 2002. Available from: http://hdl.handle.net/10803/6424

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

Universitat Politècnica de Catalunya

19. Rovira, Miquel (Rovira Boixaderas). Contribution to the development of hydrometallurgical separation and concentration techniques focused on precious metals recovery.

Degree: Departament d'Enginyeria Química, 1998, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6439

► This thesis is focused on the recovery of precious metals from hydrochloric acid solutions through emergent or well established metal recovery techniques based or on… (more)

▼ This thesis is focused on the recovery of precious metals from hydrochloric acid solutions through emergent or well established metal recovery techniques based or on the principles of solvent extraction technology. This subject is of a great importance due to the high value and scarcity of precious metals, consequently the need of developing and consolidating new separation and concentration processes is imperative. The main conclusions derived from this work are: - Liquid-liquid extraction allow fast Pd(II) extraction and stripping when the extractant DEHTPA dissolved in kerosene is used as organic phase. Pd(II) can be selectively extracted by DEHTPA over Cu(II), Fe(III), Pt(IV), Rh(III) and Zn(II). - DEHTPA and Alamine 336 are appropiate extractants for preparation of impregnated resins suitable for selective extraction of Pd(II) over metal impurities and co-extraction of Pd(II) and Pt(IV) against Rh(III). Impregnated resins maintain the advantages of ion-exchange technology, and also keep the selective characteristics of the extractants. However, the extraction and stripping kinetics of impregnated resins are slow compared to solvent extraction. Impregnated resins have also benn combined with fluidized bed technology allowing continuous operation. - Supported liquid membranes (SLM) are very attractive since they combine the processes of extraction and stripping in a single stage. SLM/DEHTPA system permits selective Pd(II) transport on a diffusion controlled process. The presence of impurities inn the feed solution may cause blockage of the membrane. - Selective cloud point (CP) extraction of Au(III) using the surfactant PONPE7.5 is achieved at ambient temperature in a similar manner as in solvent extraction not requiring the use of organic solvents. The application of CP extraction is demonstrated for the recovery of Au from a printed substrate, although the usage of an organic solvent, chloroform, is necessary in the stripping step. Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Sastre Requena, Ana M. (Ana María) (director).

Subjects/Keywords: extracció líquid-líquid; separació; resines impregnades; recuperació; metalls preciosos; hidrometal·lúrgica; membranes; 3303. Enginyeria i tecnologia química - 2301. Química analítica; 504; 543; 66

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APA (6^th Edition):

Rovira, M. (. B. (1998). Contribution to the development of hydrometallurgical separation and concentration techniques focused on precious metals recovery. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6439

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

Chicago Manual of Style (16^th Edition):

Rovira, Miquel (Rovira Boixaderas). “Contribution to the development of hydrometallurgical separation and concentration techniques focused on precious metals recovery.” 1998. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6439.

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

MLA Handbook (7^th Edition):

Rovira, Miquel (Rovira Boixaderas). “Contribution to the development of hydrometallurgical separation and concentration techniques focused on precious metals recovery.” 1998. Web. 06 Dec 2019.

Vancouver:

Rovira M(B. Contribution to the development of hydrometallurgical separation and concentration techniques focused on precious metals recovery. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 1998. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6439.

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

Council of Science Editors:

Rovira M(B. Contribution to the development of hydrometallurgical separation and concentration techniques focused on precious metals recovery. [Thesis]. Universitat Politècnica de Catalunya; 1998. Available from: http://hdl.handle.net/10803/6439

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

Universitat Politècnica de Catalunya

20. Pastor Ferrer, Elsa. Contribució a l'estudi dels efectes dels retardants en l'extinció d'incendis forestals.

Degree: Departament d'Enginyeria Química, 2004, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6445

► Forest fires have seriously devastated our region during the last years, causing human and environmental damage and destroying one of the most valuable source of… (more)

▼ Forest fires have seriously devastated our region during the last years, causing human and environmental damage and destroying one of the most valuable source of wealth and balance of our country. Their economic and social consequences have been very important. This thesis tries to find solutions to the serious problems originated by wildland fires represent in our country. It is focused on the field of extinction and more specifically on the application of long-term fire retardants, which acts as firebreaks of the fire front. This is an extinction technique that offers great possibilities of success; however, it presents many uncertainties related to its efficacy and operational capacity, due to the lack of knowledge at medium and large scale. This PhD thesis has two main objectives; the first one involves designing a new experimental methodology for the study of the effect of long-term fire retardants, which allows extracting the maximum information on the main fire behaviour variables. The later aims at the achievement of a mathematical model to predict the effect of a certain retardant treatment, applied to a fire front, given its application parameters. Wide laboratory experimental programs have been carried out in the University of Coimbra (Portugal) and in the Politechnic University of Catalunya (where an experimental installation had to be designed and started) and two field experimental campaigns with typical Mediterranean vegetation have been realised as well, in order to achieve these objectives. Different data acquisition systems have been implemented so that rate of spread, combustion velocity, temperatures and heat flux by radiation of the fire front could have been recorded. The main physical phenomena that take place in a fire front treated with a retardant formulation have been detailed by means of data analysis. Finally, a theoretical mathematical model based on the radiative heat transfer mechanism has been validated through this analysis. This model has been adapted aiming at the consideration of retardant treatment effects and the achievement of a predictive tool to evaluate them. Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Planas Cuchi, Eulàlia (director).

Subjects/Keywords: incendis forestals; transferència de calor; retardants a llarg termini; modelització matemàtica; termografia infrarroja; extinció; velocitat de propagació; 3303. Enginyeria i tecnologia química - 3106. Florestes; 00; 502; 66

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

APA (6^th Edition):

Pastor Ferrer, E. (2004). Contribució a l'estudi dels efectes dels retardants en l'extinció d'incendis forestals. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6445

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

Chicago Manual of Style (16^th Edition):

Pastor Ferrer, Elsa. “Contribució a l'estudi dels efectes dels retardants en l'extinció d'incendis forestals.” 2004. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6445.

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

MLA Handbook (7^th Edition):

Pastor Ferrer, Elsa. “Contribució a l'estudi dels efectes dels retardants en l'extinció d'incendis forestals.” 2004. Web. 06 Dec 2019.

Vancouver:

Pastor Ferrer E. Contribució a l'estudi dels efectes dels retardants en l'extinció d'incendis forestals. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2004. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6445.

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

Council of Science Editors:

Pastor Ferrer E. Contribució a l'estudi dels efectes dels retardants en l'extinció d'incendis forestals. [Thesis]. Universitat Politècnica de Catalunya; 2004. Available from: http://hdl.handle.net/10803/6445

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

21. Ayar, Pooyan. Exploring Damage Recovery in Bituminous Mixtures: An Analysis of Healing Technologies.

Degree: 2018, Universidad de Granada

URL: http://hdl.handle.net/10481/48600

Tesis Univ. Granada. Programa Oficial de Doctorado en: Ingeniería Civil Advisors/Committee Members: Rubio-Gámez, María del Carmen, Moreno Navarro, Fernando, Universidad de Granada. Departamento de Ingeniería de la Construcción y Proyectos de Ingeniería.

Subjects/Keywords: Materiales bituminosos; Pavimentos bituminosos; Carreteras; Mantenimiento y reparación; Tixotropía; UGR-FACT (University of Granada Fatigue Asphalt Cracking Test); Fatiga (Mecánica); 62; 3303

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APA (6^th Edition):

Ayar, P. (2018). Exploring Damage Recovery in Bituminous Mixtures: An Analysis of Healing Technologies. (Thesis). Universidad de Granada. Retrieved from http://hdl.handle.net/10481/48600

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

Chicago Manual of Style (16^th Edition):

Ayar, Pooyan. “Exploring Damage Recovery in Bituminous Mixtures: An Analysis of Healing Technologies.” 2018. Thesis, Universidad de Granada. Accessed December 06, 2019. http://hdl.handle.net/10481/48600.

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

MLA Handbook (7^th Edition):

Ayar, Pooyan. “Exploring Damage Recovery in Bituminous Mixtures: An Analysis of Healing Technologies.” 2018. Web. 06 Dec 2019.

Vancouver:

Ayar P. Exploring Damage Recovery in Bituminous Mixtures: An Analysis of Healing Technologies. [Internet] [Thesis]. Universidad de Granada; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10481/48600.

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

Council of Science Editors:

Ayar P. Exploring Damage Recovery in Bituminous Mixtures: An Analysis of Healing Technologies. [Thesis]. Universidad de Granada; 2018. Available from: http://hdl.handle.net/10481/48600

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

22. Caamaño Roa, Marcelo. Compuestos Organometálicos Heteromultinucleares Derivados de Ferroceno.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/12067

Subjects/Keywords: Metaloligandos; Ferroceno; Compuestos organometálicos; Compuestos ciclometalados; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330303 Procesos químicos; Materias::Investigación::23 Química::2303 Química inorgánica::230319 Alquilos metálicos

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APA (6^th Edition):

Caamaño Roa, M. (2018). Compuestos Organometálicos Heteromultinucleares Derivados de Ferroceno. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/12067

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

Chicago Manual of Style (16^th Edition):

Caamaño Roa, Marcelo. “Compuestos Organometálicos Heteromultinucleares Derivados de Ferroceno.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/12067.

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

MLA Handbook (7^th Edition):

Caamaño Roa, Marcelo. “Compuestos Organometálicos Heteromultinucleares Derivados de Ferroceno.” 2018. Web. 06 Dec 2019.

Vancouver:

Caamaño Roa M. Compuestos Organometálicos Heteromultinucleares Derivados de Ferroceno. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/12067.

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

Council of Science Editors:

Caamaño Roa M. Compuestos Organometálicos Heteromultinucleares Derivados de Ferroceno. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/12067

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

23. Rodríguez Palmeiro, Iago. Applications of Surface Active Ionic Liquids.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/15097

Subjects/Keywords: surfactant ionic liquids; nanoparticles; ionanofluids; enhanced oil recovery; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330303 Procesos químicos; Materias::Investigación::22 Física::2213 Termodinámica::221309 Equilibrios termodinámico

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APA (6^th Edition):

Rodríguez Palmeiro, I. (2018). Applications of Surface Active Ionic Liquids. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/15097

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

Chicago Manual of Style (16^th Edition):

Rodríguez Palmeiro, Iago. “Applications of Surface Active Ionic Liquids.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/15097.

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

MLA Handbook (7^th Edition):

Rodríguez Palmeiro, Iago. “Applications of Surface Active Ionic Liquids.” 2018. Web. 06 Dec 2019.

Vancouver:

Rodríguez Palmeiro I. Applications of Surface Active Ionic Liquids. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/15097.

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

Council of Science Editors:

Rodríguez Palmeiro I. Applications of Surface Active Ionic Liquids. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/15097

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

24. Guldris Pensado, Noelia. Design and Study of Multifunctional Systems Based on Magnetic Nanoparticles for Biomedical Applications.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/15296

Subjects/Keywords: nanoparticles; iron oxide; click chemistry; MRI; Materias::Investigación::22 Física::2210 Química física::221028-1 Preparación y caracterización de materiales inorgánicos; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330305 Síntesis química

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APA (6^th Edition):

Guldris Pensado, N. (2018). Design and Study of Multifunctional Systems Based on Magnetic Nanoparticles for Biomedical Applications. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/15296

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

Chicago Manual of Style (16^th Edition):

Guldris Pensado, Noelia. “Design and Study of Multifunctional Systems Based on Magnetic Nanoparticles for Biomedical Applications.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/15296.

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

MLA Handbook (7^th Edition):

Guldris Pensado, Noelia. “Design and Study of Multifunctional Systems Based on Magnetic Nanoparticles for Biomedical Applications.” 2018. Web. 06 Dec 2019.

Vancouver:

Guldris Pensado N. Design and Study of Multifunctional Systems Based on Magnetic Nanoparticles for Biomedical Applications. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/15296.

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

Council of Science Editors:

Guldris Pensado N. Design and Study of Multifunctional Systems Based on Magnetic Nanoparticles for Biomedical Applications. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/15296

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

25. Rodríguez Escontrela, Iria. Phase Behaviour of Surface Active Ionic Liquids for Enhanced Oil Recovery.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/16499

Subjects/Keywords: Surface active ionic liquids; Interfacial tension; Enhanced Oil Recovery; Phase behaviour; Materias::Investigación::22 Física::2213 Termodinámica::221309 Equilibrios termodinámico; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330390 Tensioactivos

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APA (6^th Edition):

Rodríguez Escontrela, I. (2018). Phase Behaviour of Surface Active Ionic Liquids for Enhanced Oil Recovery. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/16499

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

Chicago Manual of Style (16^th Edition):

Rodríguez Escontrela, Iria. “Phase Behaviour of Surface Active Ionic Liquids for Enhanced Oil Recovery.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/16499.

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

MLA Handbook (7^th Edition):

Rodríguez Escontrela, Iria. “Phase Behaviour of Surface Active Ionic Liquids for Enhanced Oil Recovery.” 2018. Web. 06 Dec 2019.

Vancouver:

Rodríguez Escontrela I. Phase Behaviour of Surface Active Ionic Liquids for Enhanced Oil Recovery. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/16499.

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

Council of Science Editors:

Rodríguez Escontrela I. Phase Behaviour of Surface Active Ionic Liquids for Enhanced Oil Recovery. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/16499

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

Universitat Politècnica de Catalunya

26. Roncero Vivero, Ma. Blanca (María Blanca). Obtención de una secuencia "TCF" con la aplicación de ozono y enzimas, para el blanqueo de pastas madereras y de origen agrícola. Optimización de la etapa Z. Análisis de los efectos en la fibra celulósica y sus componentes.

Degree: Departament d'Enginyeria Tèxtil i Paperera, 2001, Universitat Politècnica de Catalunya

URL: http://hdl.handle.net/10803/6489

► La motivació per a la realització d'aquest projecte sorgeix de la problemàtica ambiental ja coneguda que existeix amb relació a la contaminació produïda pels reactius… (more)

▼ La motivació per a la realització d'aquest projecte sorgeix de la problemàtica ambiental ja coneguda que existeix amb relació a la contaminació produïda pels reactius utilitzats en el blanqueig de pastes per a paper, i per l'interès en la utilització de matèries primes anuals, com per exemple els residus agrícoles. La present tesi forma part de les línies d'investigació en el blanqueig de pastes per a paper que es porten a terme en el laboratori de l'Especialitat Paperera i Gràfica del Departament d'Enginyeria Tèxtil i Paperera de la Universitat Politècnica de Catalunya, essent la primera tesi que es realitza en temes de blanqueig amb ozó i d'utilització d'enzims. Mitjançant els estudis realitzats s'arriba a obtenir una seqüència totalment lliure de clor (TCF) que inclou una etapa de blanqueig amb ozó (Z) i un tractament enzimàtic amb xilanasa (X), amb la qual s'aconsegueix obtenir una pasta blanquejada d'Eucalyptus amb propietats finals de les pastes, papers i efluents comparables amb les d'una seqüència ECF. Aquesta seqüència de blanqueig és també aplicable a una pasta de palla de blat, amb la qual s'obté bones propietats finals. Així doncs, el present treball d'investigació tracta bàsicament tres qüestions: La primera consisteix en l'increment de la selectivitat del blanqueig amb ozó per al qual es realitza un estudi de l'aplicació de diferents tractaments abans, durant i després d'aquest estadi. Els resultats obtinguts mostren que és convenient realitzar un postractament amb borohidrur sòdic ja que és molt eficient degut al seu elevat potencial reductor de grups carbonil, la qual cosa es corrobora amb l'estudi realitzat sobre el número de talls en la cadena cel·lulòsica (CS). Pel que fa als diferents pretractaments i additius aplicats, aquests últims són més beneficiosos, i en concret els que es realitzen a pH àcid, indicant que el pH té un efecte important en la selectivitat de l'etapa Z, cosa que es confirma amb els estudis cinètics realitzats, i que a més està relacionat amb la major formació de radicals hidroxil a pH alcalí. La naturalesa de l'additiu utilitzat a pH àcid també influeix en la selectivitat de l'etapa Z. Dels diferents additius estudiats i aplicats a pH entre 2 i 3, l'àcid oxàlic és el més eficient ja que presenta un efecte "addicional" a la resta d'additius diferent al pH, influint positivament en la cinètica de la etapa Z ja que augmenta la cinètica de deslignificació i disminueix la de degradació de la cel·lulosa. A través dels estudis realitzats es dedueix que aquest efecte addicional de l'àcid oxàlic és degut a un conjunt de factors: captador de radicals hidroxil, estabilitzador de l'ozó, disminució de l'inflament de la cel·lulosa, catalitzador de les reaccions de l'ozó i/o radicals amb la lignina, aportador d'hidrogen i quelant de cations metàl·lics. La dosi necessària d'àcid oxàlic és molt petita i inclús inferior a la quantitat que es forma en el propi estadi. Per tant, en cas de tancament de circuits, es podria realitzar una recirculació dels efluents dins de… Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Vidal Llucià, Teresa (director).

Subjects/Keywords: envelliment del paper; pasta d'eucalyptus; cristallinitat per XRD; ozó; SEM; grups carbonil y carboxil; estudis cinètics; propietats físiques del paper; pasta de palla de blat; blanqueig TCF; tractaments enzimàtics; hidrats de carboni per HPLC; àcid oxàlic; xilanasa; 3303. Enginyeria i tecnologia químiques - 2304. Química macromolecular; 62; 66

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

APA (6^th Edition):

Roncero Vivero, M. B. (. B. (2001). Obtención de una secuencia "TCF" con la aplicación de ozono y enzimas, para el blanqueo de pastas madereras y de origen agrícola. Optimización de la etapa Z. Análisis de los efectos en la fibra celulósica y sus componentes. (Thesis). Universitat Politècnica de Catalunya. Retrieved from http://hdl.handle.net/10803/6489

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

Chicago Manual of Style (16^th Edition):

Roncero Vivero, Ma Blanca (María Blanca). “Obtención de una secuencia "TCF" con la aplicación de ozono y enzimas, para el blanqueo de pastas madereras y de origen agrícola. Optimización de la etapa Z. Análisis de los efectos en la fibra celulósica y sus componentes.” 2001. Thesis, Universitat Politècnica de Catalunya. Accessed December 06, 2019. http://hdl.handle.net/10803/6489.

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

MLA Handbook (7^th Edition):

Roncero Vivero, Ma Blanca (María Blanca). “Obtención de una secuencia "TCF" con la aplicación de ozono y enzimas, para el blanqueo de pastas madereras y de origen agrícola. Optimización de la etapa Z. Análisis de los efectos en la fibra celulósica y sus componentes.” 2001. Web. 06 Dec 2019.

Vancouver:

Roncero Vivero MB(B. Obtención de una secuencia "TCF" con la aplicación de ozono y enzimas, para el blanqueo de pastas madereras y de origen agrícola. Optimización de la etapa Z. Análisis de los efectos en la fibra celulósica y sus componentes. [Internet] [Thesis]. Universitat Politècnica de Catalunya; 2001. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10803/6489.

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

Council of Science Editors:

Roncero Vivero MB(B. Obtención de una secuencia "TCF" con la aplicación de ozono y enzimas, para el blanqueo de pastas madereras y de origen agrícola. Optimización de la etapa Z. Análisis de los efectos en la fibra celulósica y sus componentes. [Thesis]. Universitat Politècnica de Catalunya; 2001. Available from: http://hdl.handle.net/10803/6489

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

27. Xavier Saavedra, Ana Lucía. Estudio de técnicas alternativas para la extracción de compuestos fenólicos de biomasa agroforestal.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/15682

Subjects/Keywords: Sistemas acuosos de dos fases/ Aqueous two phase systems; compuestos fenolicos /phenolic compounds; residuos agroforestales/agroforestry residues; extracción/extraction; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330304 Separación química; Materias::Investigación::33 Ciencias tecnológicas::3328 Procesos tecnológicos::332825 Extracción sólido-liquido

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APA (6^th Edition):

Xavier Saavedra, A. L. (2018). Estudio de técnicas alternativas para la extracción de compuestos fenólicos de biomasa agroforestal. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/15682

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

Chicago Manual of Style (16^th Edition):

Xavier Saavedra, Ana Lucía. “Estudio de técnicas alternativas para la extracción de compuestos fenólicos de biomasa agroforestal.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/15682.

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

MLA Handbook (7^th Edition):

Xavier Saavedra, Ana Lucía. “Estudio de técnicas alternativas para la extracción de compuestos fenólicos de biomasa agroforestal.” 2018. Web. 06 Dec 2019.

Vancouver:

Xavier Saavedra AL. Estudio de técnicas alternativas para la extracción de compuestos fenólicos de biomasa agroforestal. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/15682.

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

Council of Science Editors:

Xavier Saavedra AL. Estudio de técnicas alternativas para la extracción de compuestos fenólicos de biomasa agroforestal. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/15682

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

28. Cambeiro Cambeiro, Fermín. Nuevas Ciclaciones Catalizadas por Carbenos de Rutenio.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/12068

Subjects/Keywords: Química organometálica; Carbenos de rutenio; Síntesis orgánica; Ciclaciones; Heterociclos; Materias::Investigación::23 Química::2306 Química orgánica::230611 Compuestos organometálicos; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330305 Síntesis química

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APA (6^th Edition):

Cambeiro Cambeiro, F. (2018). Nuevas Ciclaciones Catalizadas por Carbenos de Rutenio. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/12068

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

Chicago Manual of Style (16^th Edition):

Cambeiro Cambeiro, Fermín. “Nuevas Ciclaciones Catalizadas por Carbenos de Rutenio.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/12068.

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

MLA Handbook (7^th Edition):

Cambeiro Cambeiro, Fermín. “Nuevas Ciclaciones Catalizadas por Carbenos de Rutenio.” 2018. Web. 06 Dec 2019.

Vancouver:

Cambeiro Cambeiro F. Nuevas Ciclaciones Catalizadas por Carbenos de Rutenio. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/12068.

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

Council of Science Editors:

Cambeiro Cambeiro F. Nuevas Ciclaciones Catalizadas por Carbenos de Rutenio. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/12068

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

29. Arca Ramos, Adriana. Laccase-based technologies to remove organic pollutants from soils and wastewaters.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/13823

Subjects/Keywords: laccase; enzymatic biocatalysis; environmental pollutants; Materias::Investigación::23 Química::2302 Bioquímica::230209 Enzimología; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330303 Procesos químicos; Materias::Investigación::33 Ciencias tecnológicas::3308 Ingeniería y tecnología del medio ambiente::330802 Residuos industriales; Materias::Investigación::33 Ciencias tecnológicas::3308 Ingeniería y tecnología del medio ambiente::330807 Eliminación de residuos

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APA (6^th Edition):

Arca Ramos, A. (2018). Laccase-based technologies to remove organic pollutants from soils and wastewaters. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/13823

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

Chicago Manual of Style (16^th Edition):

Arca Ramos, Adriana. “Laccase-based technologies to remove organic pollutants from soils and wastewaters.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/13823.

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

MLA Handbook (7^th Edition):

Arca Ramos, Adriana. “Laccase-based technologies to remove organic pollutants from soils and wastewaters.” 2018. Web. 06 Dec 2019.

Vancouver:

Arca Ramos A. Laccase-based technologies to remove organic pollutants from soils and wastewaters. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/13823.

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

Council of Science Editors:

Arca Ramos A. Laccase-based technologies to remove organic pollutants from soils and wastewaters. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/13823

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

30. Villanueva Rey, Pedro. From Vineyard to Sea. Application of Life Cycle Assessment to Wine and Seafood Sectors.

Degree: 2018, Universidad de Santiago de Compostela

URL: http://hdl.handle.net/10347/13712

Subjects/Keywords: Life Cycle Assessment (LCA); wine; seafood; Materias::Investigación::33 Ciencias tecnológicas::3303 ingeniería y tecnología químicas::330311 Química industrial; Materias::Investigación::33 Ciencias tecnológicas::3309 Tecnología de los alimentos::330929 Vino; Materias::Investigación::33 Ciencias tecnológicas::3309 Tecnología de los alimentos::330992 Bioquímica y microbiología de los procesos fermentativos

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APA (6^th Edition):

Villanueva Rey, P. (2018). From Vineyard to Sea. Application of Life Cycle Assessment to Wine and Seafood Sectors. (Thesis). Universidad de Santiago de Compostela. Retrieved from http://hdl.handle.net/10347/13712

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

Chicago Manual of Style (16^th Edition):

Villanueva Rey, Pedro. “From Vineyard to Sea. Application of Life Cycle Assessment to Wine and Seafood Sectors.” 2018. Thesis, Universidad de Santiago de Compostela. Accessed December 06, 2019. http://hdl.handle.net/10347/13712.

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

MLA Handbook (7^th Edition):

Villanueva Rey, Pedro. “From Vineyard to Sea. Application of Life Cycle Assessment to Wine and Seafood Sectors.” 2018. Web. 06 Dec 2019.

Vancouver:

Villanueva Rey P. From Vineyard to Sea. Application of Life Cycle Assessment to Wine and Seafood Sectors. [Internet] [Thesis]. Universidad de Santiago de Compostela; 2018. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10347/13712.

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

Council of Science Editors:

Villanueva Rey P. From Vineyard to Sea. Application of Life Cycle Assessment to Wine and Seafood Sectors. [Thesis]. Universidad de Santiago de Compostela; 2018. Available from: http://hdl.handle.net/10347/13712

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

		in
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		in
And / Or
		in

Open Access Theses and Dissertations