A gaseous mixture of hydrogen and carbon dioxide is used as the fuel cell fuel or anode gas, and air is used as the oxidant or cathode gas in a nonalkaline fuel cell power plant. In feeding the fuel gas through the anode side of the fuel cell, hydrogen is removed during the electrochemical reaction and...http://www.google.de/patents/US4751151?utm_source=gb-gplus-sharePatent US4751151 - Recovery of carbon dioxide from fuel cell exhaust
