Impact of electrode composition on electricity generation in a single-compartment fuel cell using Shewanella putrefaciens.
The production of electricity by Shewanella putrefaciens in the absence of exogenous electron acceptors was examined in a single compartment fuel cell with different types of electrodes and varying physiological conditions. Electricity production was dependent on anode composition, electron donor type and cell concentration. A maximum current of 2.5 mA and a current density of 10.2 mW/m(2)electrode was obtained with a Mn(4+) graphite anode, 200 mM sodium lactate and a cell concentration of 3.9 g cell protein/ml. Current production by S. putrefaciens was enhanced 10-fold when an electron mediator (i.e., Mn(4+) or neutral red) was incorporated into the graphite anode.
Park
D H
DH
Department of Biochemistry and Microbiology, Michigan State University, East Lansing 48824-1319, USA.
Zeikus
J G
JG
D004560:Electricity; D004563:Electrochemistry; D004566:Electrodes; D019344:Lactic Acid / Q000737:chemistry / Q000378:metabolism; D020614:Shewanella putrefaciens / Q000254:growth & development / Q000378:metabolism*
D019344:Lactic Acid