Now showing items 61-80 of 108

    Ecotoxicological bioassays as complementary tools for the risk assessment of contaminated soils 

    Bori Dols, Jaume (Date of defense: 2016-06-29)

    Environmental impacts associated to the unstoppable growth of human population are threatening ecosystems worldwide. Among them, soil ecosystems are becoming increasingly degraded due to their unsustainable use and management, ...

    Numerical modelling of microalgae systems for wastewater treatment 

    Solimeno, Alessandro (Date of defense: 2017-05-04)

    Reactions and processes that occur in microalgae and bacteria systems are difficult to understand because most of them take place simultaneously and depend on many parameters such as temperature, solar radiation, nutrients ...

    Anaerobic digestion and bioeletrochemical systems combination for energy and nitrogen recovery optimisation 

    Cerrillo Moreno, Míriam (Date of defense: 2016-10-27)

    Anaerobic digestion (AD) is a widespread technology for treating high strength waste streams, such as livestock manure. AD has some limitations: i) high nutrient concentrations in effluents (especially nitrogen and ...

    Characterization of hydrological processes in a Mediterranean mountain research catchment by combining distributed hydrological measurements and environmental tracers 

    Roig Planasdemunt, Maria (Date of defense: 2016-06-27)

    The main objective of this thesis is to characterize hydrological processes in a Mediterranean mountain catchment, by combining distributed hydrological measurements and environmental tracers in order to improve the ...

    Combined heat and power generation systems for optimum environmental and economic performance : a case study in Catalonia 

    González Juncà, Arnau (Date of defense: 2016-06-21)

    In the current energy conjunction, with an expected growth of energy consumption in a context of fossil fuel depletion, more focus is being placed on renewable energy sources (RES) for electricity generation. To enhance ...

    Characterization of atmospheric pollution dynamics in Spain by means of air quality modelling 

    Valverde Morales, Victor (Date of defense: 2016-04-08)

    Atmospheric pollution causes large impacts on human health and societal economic interests and it is a threat for the ecosystems and the climate of the Earth. Improving the understanding of pollution dynamics is necessary ...

    Assessment of planetary boundary-layer schemes with advanced remote sensing instruments and air quality modelling 

    Banks, Robert F. (Date of defense: 2016-04-04)

    Urban air pollution is of major concern in Spain and also throughout Europe and globally with numerous effects on human health and ecosystems. Since air quality (AQ) is predominantly a problem for human health and the ...

    Understanding the mobility of caesium, nickel and selenium released from waste disposal : chemical retention mechanisms of degraded cement 

    Borkel, Christoph (Date of defense: 2016-01-21)

    Cementitious materials are used to condition or stabilise waste and to build infrastructure in disposal sites. Moreover, they are envisaged to form part of engineered barrier systems as container, backfill or liner materials ...

    Microalgae harvesting in wastewater treatment plants : application of natural techniques for an efficient flocculation 

    Gutiérrez Martínez, Raquel (Date of defense: 2016-05-03)

    Research of new sources of bioenergy is nowadays driving attention to microalgae. Cost-effective biomass harvesting poses a challenge for full-scale microalgae production for biofuels. In the context of wastewater treatment ...

    Propuesta metodológica para evaluar el comportamiento ambiental y económico de los residuos de construcción y demolición (RCD) en la producción de materiales pétreos 

    Suárez Silgado, Sindy Sofía (Date of defense: 2016-02-04)

    The construction sector contributes to current environmental problems. It is responsible for the impact of the production of building materials and for the waste generated in construction works. Strategies for alternative ...

    Sewage sludge anaerobic digestion : study of synergies and operational strategies of co-digestion 

    Silvestre Tormo, Gracia (Date of defense: 2015-10-30)

    Wastewater treatment plants (WWTPs) are characterized by their high organic matter and nutrient removal efficiency, but also by their high energy consumption. In the current context where resources are increasingly scarce, ...

    Development and evaluation of an atmospheric aerosol module implemented within the NMMB/BSC-CTM 

    Spada, Michele (Date of defense: 2015-11-23)

    This PhD Thesis presents and discusses the developments of a hybrid sectional-bulk multicomponent aerosol module coupled with the multiscale chemical weather prediction system NMMB/BSC-CTM. The module is designed to provide ...

    Development of methods for monitoring the water and sanitation sector at different scales through human rights lenses 

    Flores Baquero, Óscar (Date of defense: 2015-10-09)

    El reconocimiento del Derecho Humano al Agua y Saneamiento (DHAS) a través de las resoluciones de la Asamblea General y del Consejo de Derechos Humanos de Naciones Unidas en 2010 representa un gran avance en el sector del ...

    WTEA : Millores de la metodologia per al desenvolupament d’auditories energètiques 

    García-Almiñana, Daniel (Date of defense: 2015-09-01)

    This PhD thesis shows the results of 10 years of energy audits for buildings as a proposal for a methodological improvement in the energy audit process itself. The main findings are referred to the three key points of any ...

    Microbial fuel cell running on high strength animal wastewater : nitrogen removal strategies and microbial community characterization 

    Sotres Fernández, Ana (Date of defense: 2015-07-24)

    A microbial fuel cell (MFC) is a bioelectrochemical system (BES) capable of converting the chemical energy contained in the chemical bonds of a substrate into electrical energy by means of electrochemical reactions catalyzed ...

    Integration of advanced off-line and on-line systems for the monitoring of surface and drinking water quality 

    López Roldán, Ramón (Date of defense: 2015-07-10)

    An optimal strategy for monitoring water quality should be based on a combination of different technologies depending on the particularities of the system being observed. The final solution will be a combination of laboratory ...

    Modelización 3D de la dispersión de residuos generados en piscifactorías marinas 

    Chaperón Cordero, Wilson (Date of defense: 2015-06-17)

    Intensive fish culture in floating cages is one of aquaculture activities that has grown fastest in recent years. However, this activity produces impacts ranging from alterations in the natural environment to social and ...

    Modeling strategies for volcanic ash dispersal and management of impacts on civil aviation 

    Scaini, Chiara (Date of defense: 2015-03-18)

    During April-May 2010, the eruption of Eyjafjallajokull volcano in Iceland caused the larger breakdown of civil aviation after World War II. Although the eruption was weak in intensity, the dispersal of volcanic ash clouds ...

    Implementation, development and evaluation of the gas-phase chemistry within the Global/Regional NMMB/BSC Chemical Transport Model (NMMB/BSC-CTM) 

    Badia i Moragas, Alba (Date of defense: 2014-12-12)

    Air pollution is a serious issue that affects human health, the environment and the climate at levels from local to global scales. The main processes that affect air pollution levels are: emissions, chemistry, transport ...

    Solar disinfection of secondary effluent and the subsequent bacterial regrowth : considerations, limitations and environmental perspectives 

    Giannakis, Stefanos (Date of defense: 2014-10-29)

    The present Thesis deals with the solar disinfection of synthetic secondary effluent under laboratory controlled conditions, focusing on the post-irradiation bacterial regrowth. The influence of various internal and external ...