title: Nitrite as a candidate substrate in microbial fuel cells.
abstract: Current generation using nitrite as substrate (pH 6.9, 40 mgN l(-1)) in a nitrite-fed microbial fuel cell was investigated under anaerobic and aerobic anodic conditions as an alternative to the biological nitrite oxidation process. Cell current, coulombic efficiency (CE) and power generation of 0.04 mA, 30 ± 2 % and 19.3 ± 3.3 μW m(-2), respectively, were observed under anaerobic conditions while complete nitrite degradation (no current) was obtained under aerobic conditions. Switching from aerobic to anaerobic anode enhanced the CE and power generation (39 ± 1 % and 29 ± 4.3 μW m(-2)).
authors.affiliation: Department of Chemical Engineering, Biotechnology Research Center, Sahand University of Technology, Tabriz, Iran.
authors.forename: Neda
authors.initials: N
authors.lastname: Faraghi
authors.forename: Sirous
authors.initials: S
authors.lastname: Ebrahimi
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D001419:Bacteria / Q000378:metabolism*; D001674:Bioelectric Energy Sources / Q000382:microbiology*; D004560:Electricity; D009566:Nitrates / Q000032:analysis / Q000378:metabolism; D009573:Nitrites / Q000032:analysis / Q000378:metabolism*; D010084:Oxidation-Reduction
chemical_list: D009566:Nitrates; D009573:Nitrites