Current recovery from sewage wastewater using electrochemically oxidized graphite felt.

ABSTRACT: The oxidation of a carbon anode has been reported to enhance electricity recovery in a microbial fuel cell (MFC). This study investigates the applicability of electrochemically oxidized graphite felt (EOGF) as the anode for the recovery of electricity from sewage wastewater when polarized at 0.2 V during MFC operation. EOGFs were prepared by polarizing graphite felt (GF) at 2 V in 1% sulfuric acid or nitric acid. The nitric acid-treated EOGF inoculated with an sewage sludge produced a maximum current of 110 μA cm^-3, which exceeds that produced by the original GF (91 μA cm^-3) under electrochemical cultivation at 0.2 V vs. Ag/AgCl. This outcome is attributed to a decrease in charge-transfer resistance and an increase in the capacitance of the anode. In contrast,

SUBMITTER: Yoshida N 

PROVIDER: S-EPMC9076062 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature