Browsing Institut d'Ecologia Aquàtica by Subject "577"

Now showing items 1-6 of 6

Arsenic and fluvial biofilms: biogeochemistry, toxicity and biotic interactions

Barral Fraga, Laura (Date of defense: 2017-10-26)

Based on the current knowledge about biofilm ecotoxicology and arsenic biogeochemistry in freshwater ecosystems, this thesis studied, under realistic environmental concentrations, i) the role of benthic biofilms in the ...

Function and structure of river sediment biofilms and their role in dissolved organic matter utilization

Freixa Casals, Anna (Date of defense: 2016-02-18)

The objective of this thesis was to study how sediment microbial communities in Mediterranean rivers used dissolved organic matter at different spatial and temporal scales. Results from the two field studies, showed that ...

Linking river sediment physical properties to biofilm biomass and activity

Ann, Vannak (Date of defense: 2015-06-30)

River sediments are composed by a variety of grain sizes which determine their permeability and biogeochemistry. The aim of this thesis was to test whether differences in river sediment physical characteristics generate ...

Origin and fate of nitrite in model ecosystems: case studies in groundwater and constructed wetlands

Hernández del Amo, Elena (Date of defense: 2019-10-04)

Nitrogen pollution in water is common in our environment, especially in places affected by agriculture and livestock, industry or wastewater discharge areas. Ammonium and nitrate are the most common pollutants and can be ...

Towards the implementation of a biotechnology for biogas upgrading: role of bacteria in siloxane removal

Boada Cahueñas, Ellana (Date of defense: 2020-07-20)

Biogas is a highly recognized alternative to fossil fuels towards a sustainable energy production. Massive use of biogas depends on the removal of contaminants that may affect performance of processing equipment and energy ...

Where nitrite respiration meets electrotrophy: diversity studies and functional characterization of autotrophic bacterial isolates from bioelectrochemical system

Vilar Sanz, Ariadna (Date of defense: 2016-02-05)

Denitrifying biocathodes are used to treat nitrogen contaminated water resources. The present PhD dissertation have been characterized different bacterial families with a relevant role in denitrification process. Different ...