Departament d'Enginyeria Química: Recent submissions
Now showing items 171-190 of 302
Modelling of self-organizaton of microtubules in plant cells
Microtubules are ubiquitous elements of any eucaryotic cell, serving many functions at different stages of its life. In plant cells they form so-called plant cell cortex, where they are organized into parallel arrays. These ...
Carbon molecular sieve membranes for gas separation
Membrane separations are simple, energy efficient processes, which can be economically competitive with traditional separation technologies. In the case of gas separation both dense and porous materials have been developed ...
Analysis of climate change impact on hydrological ecosystem services and water allocation in water scarce mediterranean river basins
The Mediterranean region appears to be particularly responsive to global and climate change, causing decrease in annual river flows and making the region most prone to an increase in drought hazard and water stress. This ...
Development of advanced mathematical programming methods for sustainable engineering and system biology
The main goal of this thesis is to develop advanced mathematical programming tools to address the design and planning of sustainable engineering systems and the modeling and optimization of biological systems. First we ...
Microalgae downstream processing and economical approaches of biodiesel producton processes
Microalgae oil has been identified as a reliable resource for biodiesel production due to its high lipid productivity and potential cultivation in non-fertile locations. However, high scale production of microalgae based ...
Complex network approaches to small team analysis. Conflict and gender
En un contexto donde los equipos juegan un papel cada vez más importante, es de gran importancia entender el conflicto y desarrollar herramientas de diagnóstico para evitarlo. Aquí, investigamos empíricamente si es posible ...
Sustainable production of hydrogen and chemical commodities from biodiesel waste crude glycerol and cellulose by biological and catalytic processes
El hidrógeno tiene un gran potencial como combustible limpio y "verde" del futuro. En consecuencia, en esta tesis se ha investigado el desarrollo de una producción sostenible de hidrógeno y otros productos químicos a través ...
Bacterial degradation of ethyl tert-butyl ether and study of the molecular mechanisms underlying its biodegradation
L’etil tert-butil éter (ETBE) és un compost oxigenant de combustibles utilitzat a Europa per tal de reduir la contaminació de l’aire produïda per la combustió dels carburants d’automòbils. L’ús continuat d’ETBE pot ...
Bentonite fining during different white winemaking stages: effect on the chemical and sensory properties of the wine
This thesis shows the results obtained from adding bentonite at different stages of the alcoholic fermentation in protein stability and reducing the bentonite required to reach stability. Results reflect the effect of this ...
Analysis of enhanced mixing by natural and forced convection with application to chemical reactor design
We looked for new designs to enhance mixing on catalytic chemical reactors. Two models were proposed. The first one, used forced convection as the mixing enhancer and consisted of a stack of corotating disks with the ...
Enhanced excess sludge digestion using thermal and chemical petreatments
Aquesta tesi versa sobre la problemàtica de la gestió de llots de purga generats a les depuradores urbanes. La directiva 86/278/EEC referent als llots de depuradora, regula l’ús i les propietats dels llots estabilitzats i ...
Development of hybrid silica membrane material for molecular sieve applications
El desarrollo de nuevas membranas de sílice ha ido ganando cada vez más importancia en los últimos años. Se propone una nueva metodología para la modificación del material de membrana de sílice. Un nuevo material de membrana ...
Advanced mathematical programming tools for alternative energy systems design
The goal of this thesis is to provide a systematic mathematical decision-support tool for the design of energy systems. Nowadays the society is becoming increasingly conscious about ecological problems originated by ...
Development of a novel catalytic membrane reactor: application in wastewater treatment
Los procesos de oxidación químicos son una herramienta universal para el tratamiento de aguas subterráneas, efluentes industriales y aguas residuales. Una de estas técnicas se basa en la generación de radicales hidroxilos ...
Pre-concentration strategies for microalgae harvesting as biorefinery process chain
Over the past few decades, microalgae become focus of the researches again as a possible raw material for the production of biodiesel due to the myth of the oil crisis and also Kyoto Protocol which entered into force in ...
Novel uses of attenuated total reflectance infrared microspectroscopy combined with multivariate analysis in food processing
El objetivo general de esta tesis fue demostrar la aplicación de la microespectroscopía del infrarrojo cercano (ATR-IRMS) combinada con análisis multivariante (soft independent modeling of class analogy) como una técnica ...
Electrochemically actuated capillary flow control for the development of integrated microfluidic devices
Dispositivos microfluidos operados por fuerzas capilares son fáciles de operar plataformas para realizar herramientas Lab-On-a-Chip (LOC). Si estas “simplistas” aplicaciones LOC tengan éxito, la operación unitaria del ...
Optimal design of sustainable chemical processes via a combined simulation-optimization approach
Resum La societat es cada dia més conscient de la escassetat i els canvis ambientals. Per això les empreses químiques han d’adaptar i desarrollar processos químics més sostenibles. En aquest sentit, hi ha una clara demanda ...
Development of advanced mathematical programming methods for supply chain management
El objetivo es desarrollar una herramienta de apoyo a la toma de decisiones para la planificación estratégica de cadenas de suministro (CS). La tarea consiste en determinar el número, ubicación y capacidad de todos los ...
Optimization of ultrafiltration membrane cleaning processes. Pretreatment for reverse osmosis in seawater desalination plants
Esta tesis explica com mejorar la eficiencia del proceso de ultrafiltración en la desalinización de agua de mar. Esto se consigue optimizando diferentes procesos de limpieza como los contralavados y las limpiezas químicas ...
