Narcis Pous

Narcis Pous
Universitat de Girona | UDG · LEQUIA Laboratory of Chemical and Environmental Engineering

PhD

About

24
Publications
4,960
Reads
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908
Citations
Additional affiliations
September 2009 - present
Universitat de Girona
Position
  • PhD Student
Description
  • PhD student on bioelectrochemical systems for groundwater bioremediation.

Publications

Publications (24)
Article
This work aimed to study the electrification of biotrickling filters by means of Microbial electrochemical technologies (MET) to develop an easy-to-assemble and easy-to-use MET for nitrogen removal without external aeration nor addition of chemicals. Four different designs were tested. The highest ammonium and nitrate removal rates (94 gN·m-3·d-1 a...
Article
Climate change and future depletion of resources are two of the most important environmental challenges that humankind have ever faced. This mini-review aims to give a second chance to contaminated water and re-calcitrant carbon dioxide (CO 2) streams by putting forward a resilience and sustainable technology based on electron-driven microbial reac...
Article
The combination of the filtration capacity of zooplankton (e.g. Daphnia) with the nutrient removal capacity of bacterial/algal biofilm in a zooplankton-containing reactor could provide a natural-based alternative for wastewater treatment. A laboratory-scale zooplankton-based reactor was tested at different HRTs resulting in a significant reduction...
Article
Daphnia populations are present in lakes and ponds. They are known to experience diurnal vertical migrations according to their feeding needs. During the day they migrate downwards to avoid predation in light-receiving layers and at night they migrate upwards, searching for food in the shallow productive layers. The light photoperiod and light inte...
Article
Fresh water is a fundamental source for humans, hence the recent shrinkage in freshwater and increase in water pollution are imperative problems that vigorously affect the people and the environment worldwide. The breakneck industrialization contributes to the procreation of substantial abundance of wastewater and its treatment becomes highly indis...
Article
Biocathodic electrode-driven denitrification has been proved experimentally in complex biofilms. However, experimentation with isolated bacteria in pure culture is still limited. In this paper, six Alphaproteobacteria (Rhizobiales), found to be dominant in a denitrifying biocathode, have been characterized bioelectrochemically. Bacteria were isolat...
Article
Full-text available
Groundwater pollution is a serious worldwide concern. Aromatic compounds, chlorinated hydrocarbons, metals and nutrients among others can be widely found in different aquifers all over the world. However, there is a lack of sustainable technologies able to treat these kinds of compounds. Microbial electro-remediation, by the means of microbial elec...
Article
MFC-based bioelectro-Fenton (BEF) system was examined in duplicate to deal with recalcitrant organics of mature landfill leachate pre-treated with partial nitritation-anammox process. The system performance was evaluated at various iron species (iron (II) sulfate and iron (III) chloride) and iron dosages (150, 300 and 500 mg L⁻¹) as Fenton catalyst...
Article
Full-text available
Denitrifying bioelectrochemical systems (BES) allows safe nitrate treatment in waters with low organic carbon content without chemicals requirements and at competitive cost. However, the technology should move towards scaling-up by improving removal rate capabilities. In this study, a novel tubular design was used to evaluate whether the hydraulic...
Poster
Microial Fuel Cell-based electro-Fenton system (BEF) was examined to deal with recalcitrant organics of pre-treated raw landfill leachate as anolyte and catholyte in a set of H-type dual chambered reactors (BEF-1 and BEF-2). The system performance was evaluated at various iron dosages and species as Fenton catalyst. A simultaneous anolyte and catho...
Article
Up to date a few electroactive bacteria embedded in biofilms are described to catalyze both anodic and cathodic reactions in bioelectrochemical systems (i.e. bidirectional electron transfer). How these bacteria transfer electrons to or from the electrode is still uncertain. In this study the extracellular electron transfer mechanism of bacteria wit...
Article
Denitrifying bioelectrochemical systems (d-BES) are a promising technology for nitrate removal from wastewaters. Microbial community monitoring is required to pave the way to application. In this study, for the first time flow cytometry combined with molecular biology techniques is exploited to monitor and determine the structure-function relations...
Article
Several regions around the world present high levels of nitrate in groundwater. Due to its toxicity, nitrate must be removed before the groundwater is used as drinking- water. This study assessed how a denitrifying bioelectrochemical system could be operated to treat nitrate- polluted groundwater. It evaluated the cathode potential (from +597 to -7...
Article
The use of biocathodes in bioelectrochemical systems (BES) for the removal of nitrate in wastewater has become a vital field of research. However, the elucidation of the underlying extracellular electron transfer (EET) fundamentals of denitrifying biocathodes is still lacking, but required for a deeper BES understanding and engineering. This study...
Article
Arsenic contamination of soil and groundwater is a serious problem worldwide. Here we show that anaerobic oxidation of As(III) to As(V), a form which is more extensively and stably adsorbed onto metal-oxides, can be achieved by using a polarized (+497 mV vs. SHE) graphite anode serving as terminal electron acceptor in the microbial metabolism. The...
Article
BACKGROUND Groundwater quality is threatened by nitrate accumulation in several regions around the world. Nitrate must be removed from contaminated groundwater to use it as drinking water. Microbial fuel cells (MFCs) can be used for autotrophic denitrification. Thus, the use of MFCs is a potential alternative to using traditional methods for treati...
Conference Paper
Summary of key findings � -The operational conditions and designs are selecting factors of cathode community diversity. � -Different ammonia-oxidising bacteria (AOB) were identified in MFCs designs. In MFC-2, bacteria (Nitrosomonas europaea) nitrified faster than in MFC-1 (Nitrosospira sp.). � -In both MFC designs, the highest microbial diversity w...
Article
Sulphate reduction in a biological cathode and physically separated from biological organic matter oxidation has been studied in this paper. The bioelectrochemical system was operated as microbial fuel cell (for bioelectricity production) to microbial electrolysis cell (with applied voltage). Sulphate reduction was not observed without applied volt...

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