Long-term continuous production of H2 in a microbial electrolysis cell (MEC) treating saline wastewater

Autor: Rémy Lacroix, Kim Milferstedt, Alessandro A. Carmona-Martínez, Eric Trably, Nicolas Bernet, Luc Etcheverry
Přispěvatelé: Laboratoire de Biotechnologie de l'Environnement [Narbonne] (LBE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA), 6TMIC Ingénieries, ANR-09-BioE-10 DéfiH12, ANR-09-BIOE-0010,DéfiH12,Production de bio-hydrogène par électrolyse microbienne(2009), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA), 6T-MIC Ingenieries (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut National de la Recherche Agronomique - INRA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Laboratoire de Génie Chimique - LGC (Toulouse, France), Bernet, Nicolas, Institut National Polytechnique de Toulouse - INPT (FRANCE)
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Deltaproteobacteria
Salinity
Bioelectric Energy Sources
Microorganism
[SDV]Life Sciences [q-bio]
02 engineering and technology
Acetates
Wastewater
010501 environmental sciences
biohydrogen
microbial electrolysis cell
saline wastewater
scanning electron microscopy
high-throughput sequencing
geoalkalibacter
microscopie électronique à balayage
Waste Disposal
Fluid
01 natural sciences
7. Clean energy
biofilm
Microbial electrolysis cell
Food science
Waste Management and Disposal
Water Science and Technology
High-throughput sequencing
biology
Ecological Modeling
cellule d'électrolyse microbienne
hydrogène
021001 nanoscience & nanotechnology
Pollution
6. Clean water
biohydrogène
Proteobacteria
Biohydrogen
0210 nano-technology
Scanning electron microscopy
Environmental Engineering
Firmicutes
Electrolysis
Microbiology
Actinobacteria
séquençage à haut débit
Geoalkalibacter
Génie chimique
Génie des procédés
0105 earth and related environmental sciences
Civil and Structural Engineering
Bacteria
Biofilm
Bacteroidetes
biology.organism_classification
Biofilms
Saline wastewater
effluent
solution saline
Hydrogen
Zdroj: Water Research
Water Research, IWA Publishing, 2015, 81, pp.149-156. ⟨10.1016/j.watres.2015.05.041⟩
Water Research 0 (81), 149-156. (2015)
ISSN: 0043-1354
DOI: 10.1016/j.watres.2015.05.041⟩
Popis: A biofilm-based 4 L two chamber microbial electrolysis cell (MEC) was continuously fed with acetate under saline conditions (35 g/L NaCl) for more than 100 days. The MEC produced a biogas highly enriched in H2 (≥90%). Both current (10.6 ± 0.2 A/m(2)Anode or 199.1 ± 4.0 A/m(3)MEC) and H2 production (201.1 ± 7.5 LH2/m(2)Cathode·d or 0.9 ± 0.0 m(3)H2/m(3)MEC·d) rates were highly significant when considering the saline operating conditions. A microbial analysis revealed an important enrichment in the anodic biofilm with five main bacterial groups: 44% Proteobacteria, 32% Bacteroidetes, 18% Firmicutes and 5% Spirochaetes and 1% Actinobacteria. Of special interest is the emergence within the Proteobacteria phylum of the recently described halophilic anode-respiring bacteria Geoalkalibacter (unk. species), with a relative abundance up to 14%. These results provide for the first time a noteworthy alternative for the treatment of saline effluents and continuous production of H2.
Databáze: OpenAIRE
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