Now showing items 87-106 of 124

    Knowledge-based modelling and simulation of operational problems of microbiological origin in wastewater treatment plants 

    Dalmau Solé, Jordi (Date of defense: 2009-11-13)

    The activated sludge and anaerobic digestion processes have been modelled in widely accepted models. Nevertheless, these models still have limitations when describing operational problems of microbiological origin. The aim ...

    Materiales compuestos a partir de filamentos naturales y matriz plástica biobasada, y sus posibles aplicaciones tecnológicas 

    Séculi, Faust (Date of defense: 2023-10-11)

    Nowadays the problem of climate change on planet Earth has aggravated, it has become extremely important to find solutions that considerably reduce or even eliminate its causes. Among the set of solutions that have been ...

    Materiales compuestos de una poliamida de origen renovable y fibras naturales de alto rendimiento: una sólida alternativa a los materiales compuestos de polipropileno reforzados con fibra de vidrio 

    Oliver Ortega, Helena (Date of defense: 2018-07-20)

    The main goal of this thesis is the production and characterization of composites materials from a bio-based polyamide and natural fibres which could be more sustainable alternative to glass fibre reinforced polypropylene. ...

    Mejora de la seguridad alimentaria en productos cárnicos listos para el consumo mediante la aplicación combinada de tecnologías de conservación emergentes 

    Marcos Muntal, Begonya (Date of defense: 2007-06-25)

    La demanda creixent de productes mínimament processats i llestos per al consum planteja un important repte per a la seguretat alimentaria i ha conduit al desenvolupament de tractaments suaus que permetin inhibir el creixement ...

    Metal ions removal from polluted waters by sorption onto exhausted coffee waste. Application to metal finishing industries wastewater treatment 

    Liu, Chang (Date of defense: 2014-10-15)

    A new technology for Cr(VI) and divalent metal ions removal based on metal sorption onto exhausted coffee waste has been developed. Physical and chemical characterization of exhausted coffee waste was explored as well as ...

    Metodologia de disseny conceptual d'estacions depuradores d'aigües residuals que combina el procés de decisió jeràrquic amb l'anàlisi de decisions multicriteri 

    Vidal Roberto, Núria (Date of defense: 2004-03-12)

    La present tesi proposa una metodologia de disseny conceptual d'estacions depuradores d'aigües residuals (EDAR) mitjançant la combinació del procés de decisió jeràrquic i l'anàlisi de decisions multicriteri. El document ...

    Métodos estadísticos para evaluar la calidad del café 

    Salamanca Romero, Claudia Alejandra (Date of defense: 2015-04-13)

    La presente tesis realizó el análisis y evaluación de los métodos estadísticos para valorar la calidad del café. En este sentido, se dio un aporte para tratar de cuantificar y cualificar la calidad del café mediante las ...

    Modificaciones tecnológicas para mejorar la seguridad y calidad del jamón curado 

    Sánchez Molinero, Filiberto (Date of defense: 2004-03-19)

    Se introdujeron varias modificaciones tecnológicas en la elaboración habitual del jamón curado español de cerdo blanco para mejorar su seguridad y calidad, así como para investigar la contribución relativa de los diversos ...

    Modificacions en la dinàmica de processat i en les característiques finals de productes carnis amb contingut reduït de sodi 

    Costa Corredor, Anna (Date of defense: 2010-10-01)

    In recent years, several studies have linked sodium intake to hypertension, and the consequent mortality risk due to vascular diseases. Several UE member states and the WHO recommend reducing the salt intake level to a ...

    Modificació de fibres de jute per l'elaboració de plàstics reforçats reciclables 

    Corrales Barbé, Farners (Date of defense: 2002-07-29)

    El treball que s'ha dut a terme es centra en la recerca d'agents modificants per a fibres cel·lulòsiques capaços de reduir la polaritat de les funcions alcohol de la seva estructura per formació de funcions ester. Les ...

    Multifunctional and hybrid nanocomposites from micro/nano fibrillated cellulose 

    Sridhara, Pruthvi Kumar Bangalore (Date of defense: 2021-12-02)

    As a renewable alternative to petroleum-based materials, wood or plant-based materials offer a greater prospect in the transition towards sustainable replacements. Native to wood, cellulose nanofibers (CNF) form the major ...

    Nanotecnología en el sector papelero: mejoras en calidad y permanencia de las fibras de alto rendimiento y secundarias en una economía circular mediante el uso de nanofibras y el refino enzimático 

    Delgado Aguilar, Marc (Date of defense: 2015-07-31)

    Bio and nano technologies are absent or incipient in papermaking industry and, concretely, in recycling and high-yield pulps sectors. In this sense, the present Thesis uses cellulose nanofibers (CNF), both in bulk and on ...

    Operation and control of SBR processes for enhanced biological nutrient removal from wastewater 

    Puig Broch, Sebastià (Date of defense: 2008-01-15)

    In the last decades, the awareness of environmental issues has increased in society considerably. There is an increasing need to improve the effluent quality of domestic wastewater treatment processes. This thesis describes ...

    Operational strategies towards nitritation-anammox implementation for mainstream municipal wastewater treatment 

    Akaboci, Tiago Rogeiro Vitor (Date of defense: 2019-07-15)

    Anammox-based processes have been commonly applied for the treatment of reject water (high nitrogen content and low C:N ratio), in the sidestream line of urban wastewater tretament plants (WWTP). However, in recent years, ...

    Optimización del diseño de los filtros de arena utilizados en sistemas de riego por goteo 

    Bové Masmiquel, Josep (Date of defense: 2018-04-27)

    To achieve a sand filter design that reduce its pressure loss, computational fluid dynamics (CFD) tecnique was used combined with laboratory tests in a scaled filter using different filter media. The CFD models allowed to ...

    Partial nitritation of landfill leachate in a SBR prior to an anammox reactor : operation and modelling 

    Ganigué Pagès, Ramon (Date of defense: 2010-02-19)

    Els lixiviats d'abocadors urbans són aigües residuals altament contaminades, que es caracteritzen per les elevades concentracions d'amoni i el baix contingut de matèria orgànica biodegradable. El tractament dels lixiviats ...

    Percepción e imagen de los consumidores españoles del pescado salvaje y del pescado de acuicultura 

    Claret Coma, Anna (Date of defense: 2015-04-17)

    La tesi doctoral que es presenta a continuació té com a objectiu estudiar la percepció que tenen els consumidors espanyols del peix d’aqüicultura en comparació amb el peix salvatge, des de vàries perspectives: percepció ...

    Pharmaceutical and personal care products removal by advanced treatment technologies 

    Chtourou, Mariem (Date of defense: 2018-10-25)

    This thesis evaluates different technologies for treating wastewater with high concentrations of PPCPs. Firstly, a state-of-art revision of advanced treatment technology for removing Triclosan (TCS) from waste water was ...

    Preparación y evaluación de formulaciones acrílicas autocurables de baja toxicidad modificadas con polímeros biodegradables para cirugía ortopédica y mínimamente invasiva 

    Franco Marquès, Elena (Date of defense: 2012-07-20)

    In the present work, a study of the preparation of new formulations of acrylic bone cements (ABC) has been carried, to obtain materials with capacity for controlled drug delivery of medicaments useful in the therapeutic ...

    Procesos secuenciales de adsorción/oxidación con H2O2 para la eliminación de compuestos orgánicos volátiles 

    Anfruns Bagaria, Alba (Date of defense: 2011-11-25)

    Volatile Organic Compounds (VOCs) are one of the main groups of odour causing compounds in Waste Water Treatment Plants (WWTP). Adsorption technology is already established, in recent years the interest for the optimization ...