Patent ID: 7687161
Filing Date: 2010-03-30
Classification: H01M,Y02E

Abstract:
1. A method for concurrent production of electrical power and biomass, and consumption of carbon dioxide (CO 2 ), comprising; a) pumping a fluid containing oxygen and carbon dioxide into a bioreactor containing chemolithotrophic microorganisms and dissolved nutrients to facilitate growth of the chemolithotrophic microorganisms, said bioreactor being in flow communication with a cathode compartment, the cathode compartment including a cathode electrode and a redox couple Fe b) pumping fuel into an anode compartment containing an anode electrode with the fuel having a hydrogen constituent, said anode compartment being separated from said cathode compartment by a proton exchange membrane, a reaction at the anode electrode being electrochemical oxidation of at least the hydrogen constituent of the fuel to produce electrons (e c) pumping an aqueous solution containing ferrous ions (Fe d) pumping the aqueous solution containing the Fe wherein electrical power in an electrical load is obtained by making electrical connection between the electrical load and the anode and cathode electrodes.