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Appl Microbiol Biotechnol. 2002 Jun;59(1):58-61. Epub 2002 Mar 28.

Impact of electrode composition on electricity generation in a single-compartment fuel cell using Shewanella putrefaciens.

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Department of Biochemistry and Microbiology, Michigan State University, East Lansing 48824-1319, USA.


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.

[Indexed for MEDLINE]

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