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

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

Content Provider	Hyper Articles en Ligne (HAL)
Author	Carmona Martinez, Alessandro Trably, Eric Milferstedt, Kim Lacroix, Rémy Etcheverry, Luc Bernet, Nicolas
Copyright Year	2015
Abstract	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/m2Anode or 199.1 ± 4.0 A/m3MEC) and H2 production (201.1 ± 7.5 LH2/m2Cathode·d or 0.9 ± 0.0 m3H2/m3MEC·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.
Related Links	https://hal.science/hal-01167881/file/Carmona-MartinezTrably-SI-WR2015_2.pdf
ISSN	00431354
DOI	10.1016/j.watres.2015.05.041
Journal	Water Research
Volume Number	81
Language	English
Publisher	HAL CCSD IWA Publishing/Elsevier
Publisher Date	2015-01-01
Access Restriction	Open
Subject Keyword	scanning electron microscopy microbial electrolysis cell biohydrogen geoalkalibacter saline wastewater high-throughput sequencing Life Sciences [q-bio]
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Waste Management and Disposal Pollution Biochemistry, Genetics and Molecular Biology Environmental Engineering Water Science and Technology Civil and Structural Engineering

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