Nitrite as a candidate substrate in microbial fuel cells
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Updated: May 22, 2026

Characterizing Electron Transport through Living Biofilms
Published on: June 1, 2018
Neda Faraghi1, Sirous Ebrahimi
1Department of Chemical Engineering, Biotechnology Research Center, Sahand University of Technology, Tabriz, Iran.
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)).
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