Now showing items 21-29 of 29

    Solar fuels via two-step thermochemical redox cycles for power and fuel production 

    Uddin, Azhar (Date of defense: 2019-07-23)

    With the issue of the rise of anthropogenic CO2, global warming and rise of the primary energy demand, strong measures for the energy transition and the diversification with renewables and existing fossil-based infrastructure ...

    Advanced carbon capture and storage technologies 

    Ćwik, Agnieszka (Date of defense: 2019-09-30)

    In this work two research topics are presented: investigation of carbonation reactions of high – calcium waste materials and CO2 storage in coal. Firstly, sorption capacity of CO2 and CH4 of hard coal and associated ...

    Valorization of low concentration sugar side-stream from dissolving pulp production 

    Gómez Millán, Gerardo (Date of defense: 2019-12-16)

    Among the platform chemicals that can be produced from lignocellulosic biomass, furfural (FUR) constitutes a promising intermediate that can be processed into a variety of advanced end products. In this thesis, the ...

    Levels and behaviour of radionuclides in water treatment plants : the case of the Barcelona metropolitan area urban water cycle 

    Mulas, Dani (Date of defense: 2020-02-28)

    The Barcelona metropolitan area (BMA; 3.2 M inhabitants) has an integrated urban water cycle management. Different type of treatment plants are located along the drinking, sewerage and reuse networks where specific treatments ...

    Study of a Compton camera based on CsI(Tl) scintillator bars for radiological environmental imaging 

    Rodríguez, María D. (Date of defense: 2020-10-26)

    Compton cameras are used for radiological imaging, which can be useful in environmental applications and especially in determining the position of hidden sources. Current Compton cameras are based on pixelated detectors ...

    Neutron capture cross section measurement of the heaviest s-process branching 204Tl and of 203Tl at CERN n_TOF 

    Casanovas Hoste, Adrià (Date of defense: 2020-10-27)

    Neutron capture cross sections are fundamental in the study of the slow neutron capture process of nucleosynthesis, also known as the s-process, which produces half of the observed solar system abundances of elements heavier ...

    Island-based polygeneration systems : feasibility of bBiomass-driven distributed concepts 

    Wegener, Moritz (Date of defense: 2021-02-12)

    The colossal risks and challenges posed by climate change require innovative solutions that must fulfil energy service demands sustainably. The concept of small-scale, biomass-based polygeneration (SBP) is one such ...

    Local optics corrections in the HL-LHC 

    Coello de Portugal - Martínez Vázquez, Jaime Maria (Date of defense: 2021-06-16)

    In order to increase the performance of particle colliders, it is crucial to make the beam sizes at the collision points as small as possible. This causes an increase of the beam size in the region surrounding the collision ...

    Carbon capture, utilization, and storage (CCUS) and how to accelerate the development and commercialization of carbon capture technologies and carbon-based products in the European and United States markets 

    Soto, Alicia (Date of defense: 2021-11-04)

    The main theme of this work revolves around the CO2 molecule, a stable waste gas of low value, low energy and often available in large quantities in different places. This work examines some viable avenues for capturing, ...