NOVELTY - The microbial fuel cell (200) includes a membrane positioned between an anode compartment (102) and a cathode compartment (106). An electrical pathway is formed between an anode (104) of the anode compartment and a cathode (108) of the cathode compartment. The anode compartment has anode biocatalyst (202) capable of catalyzing oxidation of an organic substance. The cathode compartment has cathode biocatalyst (204) capable of catalyzing reduction of an inorganic substance.    USE - Microbial fuel cell for remediation of soil or water contaminated with pollutants that form precipitates with the completion of a reduction or oxidation reaction. Can also be used in producing electrical energy for process energy demands.    ADVANTAGE - Eliminates the need for expensive inorganic catalysts and increases the activity level of reducing microorganisms exposed to local environments since bacteria is used as biocatalysts. Prevents poisoning or fouling by pure culture biocatalysis of both anode and cathode reactions in the microbial fuel cell. Shortens treatment times for in situ operation, while reducing biomass in both compartments of the fuel cell. Allows complete removal of the contaminants and eliminates subsequent reoxidation or mobilization of the contaminants by containment of precipitated substances. Prevents introduction of non-indigenous microorganisms into environmental systems since biological reactions are confined to compartments. Solid precipitates formed from reduced contaminants can be trapped in the fuel cell for recovery and disposal/reuse when the fuel cell operations have been completed.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for generating electricity.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic diagram of the reaction processes in a microbial fuel cell.    Anode compartment (102)    Anode (104)    Cathode compartment (106)    Cathode (108)    Microbial fuel cell (200)    Anode biocatalyst (202)    Cathode biocatalyst (204)