The utility of Shewanella japonica for microbial fuel cells.
Shewanella-containing microbial fuel cells (MFCs) typically use the fresh water wild-type strain Shewanella oneidensis MR-1 due to its metabolic diversity and facultative oxidant tolerance. However, S. oneidensis MR-1 is not capable of metabolizing polysaccharides for extracellular electron transfer. The applicability of Shewanella japonica (an agar-lytic Shewanella strain) for power applications was analyzed using a diverse array of carbon sources for current generation from MFCs, cellular physiological responses at an electrode surface, biofilm formation, and the presence of soluble extracellular mediators for electron transfer to carbon electrodes. Critically, air-exposed S. japonica utilizes biosynthesized extracellular mediators for electron transfer to carbon electrodes with sucrose as the sole carbon source.
Biffinger
Justin C
JC
Chemistry Division, US Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375, USA. justin.biffinger@nrl.navy.mil
Fitzgerald
Lisa A
LA
Ray
Ricky
R
Little
Brenda J
BJ
Lizewski
Stephen E
SE
Petersen
Emily R
ER
Ringeisen
Bradley R
BR
Sanders
Wesley C
WC
Sheehan
Paul E
PE
Pietron
Jeremy J
JJ
Baldwin
Jeffrey W
JW
Nadeau
Lloyd J
LJ
Johnson
Glenn R
GR
Ribbens
Meghann
M
Finkel
Steven E
SE
Nealson
Kenneth H
KH
D001674:Bioelectric Energy Sources / Q000382:microbiology*; D018441:Biofilms / Q000254:growth & development; D002244:Carbon / Q000378:metabolism; D004560:Electricity; D004566:Electrodes / Q000382:microbiology; D004579:Electron Transport; D005110:Extracellular Space / Q000378:metabolism; D005618:Fresh Water / Q000382:microbiology; D010084:Oxidation-Reduction; D020592:Shewanella / Q000378:metabolism / Q000502:physiology*; D012995:Solubility
D002244:Carbon