Effects of Anode Potential on the Electricity Generation Performance of Geobacter Sulfurreducens

The anode potential is the critical electrochemical parameter in microbial fuel cells(MFCs),which controls both the energy gain for the microorganisms and the output of MFC.This study aimed at elucidating the effects of anode potentials on the performance of electricigen in MFC.The H typed MFCs using Geobacter sulfurreducens as the inoculums were operated at different poised anode potentials.The start-up time,maximum power density and biomass were investigated.The results showed that when operated at anode potentials of-250,-100 and 50 mV versus SCE,MFCs had shorter start-up time and higher power density.The MFC at a potential of-100 mV was proved to have the highest maximum power density of 1.67 W/m3.Also the anode potential affected the biomass.