Sediment microbial fuel cells ( SMFs ) are relatively new technology which goes beyond energy generation for low- power applications. Aside from producing electrical energy, MFCs can enhance the oxidation of reduced compounds at the anode, thus bringing about the removal of excessive or unwarranted reducing equivalents from submerged soils. Also an SMFC.COULD BE APPLIED TO CONTROL REDOX-DEPEDENT processes in sediment layers..........fuel cell has been developed with a platinum anode for the oxidation of hydrogen gas, and a stainless steel For details consult https://www.ncbi.nlm.nih.gov : Microb Biotechnol. 2008 Nov:: 1( 6 ): 446 - 462
Under oxidation reaction on anode it is unlikely to get methane. Methane formation occurs on cathode where the carbon is reduced and electrons travel to cathode and electricity of generated in electrodes.