Análisis composicional del acceso a servicios de agua, saneamiento e higiene y medida de sus desigualdades 

    Quispe Coica, Filimon Alejandro (Date of defense: 2021-12-14)

    Access to water, sanitation and hygiene (WASH) services is closely linked to public health. The benefits of having safe WASH are vast. The WHO/UNICEF Joint Monitoring Program (JMP) estimates of the population accessing ...

    Aproximación del transporte de contaminantes en aguas someras mediante elementos finitos de alto orden 

    Villota Cadena, Angel Patricio (Date of defense: 2020-07-09)

    The objective of the doctoral thesis is to perform the numerical approximation of the transient convection-diffusion-reaction (CDR) vector equation in 2D with high order finite elements, quadratic, cubic and fourth order, ...

    Assessment of a groundwater system under global change scenarios: the case of Kwale (Kenya) 

    Ferrer Ramos, Núria (Date of defense: 2019-07-18)

    One of the main drivers of the current global change is the climate change characterized by increased number and increased length of drought periods. Another relevant driver that will imply greater pressure on natural ...

    Comparison of the mesophilic, thermophilic and temperature-phased anaerobic digestion of sewage sludge 

    Lanko, Iryna (Date of defense: 2022-01-27)

    Anaerobic digestion (AD) is currently spread all over the world for sewage sludge stabilisation, volume reduction and green energy production. Its implementation contributes to turn a wastewater treatment plant (WWTP) into ...

    Constructed wetland microbial fuel cells : electricity generation, treatment efficiency improvement, COD bioindication and clogging assessment 

    Corbella Vidal, Clara (Date of defense: 2017-11-10)

    Horizontal Subsurface Flow Constructed Wetlands (HSSF CWs) are natural wastewater treatment systems showing a marked redox gradient between the surface of the system and the bottom zone of the treatment bed. Therefore, ...

    Constructed wetlands for winery wastewater treatment: Sustainability and circular economy in the wine sector 

    Flores Rosell, Laura (Date of defense: 2021-10-01)

    The wine industry generates large volumes of wastewater originating from various processes and operations carried out during wine production. Winery wastewater (WWW) is characterized by highly variable flows and loadings. ...

    Constructed wetlands operated as bioelectrochemical systems for improvement and control of wastewater treatment 

    Hartl, Marco (Date of defense: 2020-07-03)

    The objective of this work was the improvement and control of wastewater treatment using constructed wetlands operated as Microbial Fuel Cells (CW-MFCs) and Microbial Electrolysis Cells (CW-MECs). For this purpose, eight ...

    Diferent approaches to improve groundwater resources management : submarine groundwater discharge and managed aquifer recharge 

    Jou Claus, Sonia (Date of defense: 2022-06-20)

    Global change is expected to affect significantly the global hydrological behavior, changing mean annual precipitation patterns, increasing length of drought periods, rising evaporation and atmospheric water vapor and ...

    High rate algal ponds for post-treating sewage from UASB reactors : treatment efficiency, anaerobic co-digestion and sustainability 

    Castro, Lucas Vassalle de (Date of defense: 2021-07-05)

    This PhD thesis aimed at evaluating the performance of high rate algal ponds (HRAP) to post-treat the anaerobic effluent from an upflow anaerobic sludge blanket (UASB) reactor fed with sewage. The work analysed the system ...

    Hybrid systems for wastewater treatment in the framework of circular economy : coupling biological and membrane technologies for a sustainable water cycle 

    Ribera Pi, Judit (Date of defense: 2019-07-23)

    The increasing water demand coupled to the depletion of natural water sources has raised the need to investigate and develop in wastewater treatment and reuse. Even more, the application of circular economy principies to ...

    Hydrodynamics and geochemistry at multiple scales : characterizing preferential flow-paths and wormholes in evaporitic sediments 

    Trabucchi, Michela (Date of defense: 2021-05-11)

    The characterization of evaporitic aquifers for a better understanding of hydrodynamics and geochemical processes is of great importance, especially in environments where both the sustainability of unique ecosystems and ...

    Life cycle assessment of the cabin waste management in the aviation sector 

    Blanca Alcubilla, Gonzalo (Date of defense: 2021-11-26)

    Air transport, in 2018, was the means of transport chosen by 8.8 billion people around the world. This is a sector that expected continued passenger growth in the following years, but due to the current effects of the ...

    lntensification of mixing and homogenisation of culture medium in photobioreactors for microalgae production 

    Bělohlav, Vojtěch (Date of defense: 2021-10-20)

    Due to the large volume of the processed medium in pilot or industrial cultivation systems, it is difficult to illuminate the entire layer of the culture medium, which results in the formation of dark zones. Due to ...

    Mathematical formulations of water mixing for reactive transport through heterogeneous media 

    Soler Sagarra, Joaquim (Date of defense: 2020-07-28)

    The study of transport of reacting solute through aquifers is relevant in many engineering fields. Reactive transport (RT) is complex because it consists of two phenomena, solute transport and chemical reactions, both of ...

    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 ...

    Microalgae in aquaculture wastewater : a new forecasting method of production in a marine system 

    Andreotti, Valeria (Date of defense: 2019-07-12)

    In the field of aquaculture, the main microalgae application is animal nutrition, in which they can be used as an unprocessed component, or as dried material for feed preparations. Moreover, microalgae can assimilate the ...

    Microalgae-based wastewater treatment systems at demonstrative scale : gravity harvesting and thickening of biomass, and advanced design of bioreactors 

    Ortiz Ruiz, Antonio (Date of defense: 2021-12-17)

    Microalgae culture is currently receiving considerable attention for its potential in wastewater treatment and production of algal biomass from which high-value bioproducts and bioenergy can be obtained, as well as the ...

    Models de priorització d'inversions utilitzant criteris de desenvolupament sostenible 

    Roigé Montornés, Núria (Date of defense: 2020-07-15)

    This Doctoral Thesis addresses aspects of interest for hydraulic infrastructure managers, such as investment decision support tools, in order to provide both decision support and the justification tools which are required ...

    Natural and anthropogenic control of water quality of an Amazon estuary : the Caeté estuary (Brazil) 

    Monteiro, Marcela Cunha (Date of defense: 2017-04-04)

    In the Amazon region, few data are available on the impacts caused by the urban settlements found in the proximity of estuaries. In the estuary of the Caeté River, the focus of the present study, the nutrient input is ...

    Production of carbohydrates and polyhydrohybutyrate by cyanobacteria grown in wastewater 

    Arias, Dulce María (Date of defense: 2018-09-28)

    Cyanobacteria are prokaryotic aerobic photosynthetic microorganisms with the capacity to remove nutrients from wastewater and synthesize a large variety of bioactive compounds and valuable byproducts. Among those valuable ...