FN ISI Export Format
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FN ISI Export Format
VR 1.0
PT J
AU Zhang, T
   Gannon, SM
   Nevin, KP
   Franks, AE
   Lovley, DR
AF Zhang, Tian
   Gannon, Sarah M.
   Nevin, Kelly P.
   Franks, Ashley E.
   Lovley, Derek R.
TI Stimulating the anaerobic degradation of aromatic hydrocarbons in
   contaminated sediments by providing an electrode as the electron
   acceptor
SO ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID MICROBIAL FUEL-CELLS; SULFATE-REDUCING CONDITIONS; MARINE HARBOR
   SEDIMENTS; WASTE-WATER TREATMENT; GEOBACTER-SULFURREDUCENS; BENZENE
   OXIDATION; ELECTRICITY-GENERATION; HARVESTING ELECTRICITY; ACTIVATED
   CARBON; BIODEGRADATION
AB The possibility that electrodes might serve as an electron acceptor to
   simulate the degradation of aromatic hydrocarbons in anaerobic
   contaminated sediments was investigated. Initial studies with Geobacter
   metallireducens demonstrated that although toluene was rapidly adsorbed
   onto the graphite electrodes it was rapidly oxidized to carbon dioxide
   with the electrode serving as the sole electron acceptor. Providing
   graphite electrodes as an electron acceptor in hydrocarbon-contaminated
   sediments significantly stimulated the removal of added toluene and
   benzene. Rates of toluene and benzene removal accelerated with
   continued additions of toluene and benzene. [C-14]-Toluene and
   [C-14]-benzene were quantitatively recovered as [C-14]-CO2,
   demonstrating that even though the graphite adsorbed toluene and
   benzene they were degraded. Introducing an electrode as an electron
   acceptor also accelerated the loss of added naphthalene and
   [C-14]-naphthalene was converted to [C-14]-CO2. The results suggest
   that graphite electrodes can serve as an electron acceptor for the
   degradation of aromatic hydrocarbon contaminants in sediments,
   co-localizing the contaminants, the degradative organisms and the
   electron acceptor. Once in position, they provide a permanent,
   low-maintenance source of electron acceptor. Thus, graphite electrodes
   may offer an attractive alternative for enhancing contaminant
   degradation in anoxic environments.
C1 [Zhang, Tian; Gannon, Sarah M.; Nevin, Kelly P.; Franks, Ashley E.; Lovley, Derek R.] Univ Massachusetts, Dept Microbiol, Amherst, MA 01003 USA.
RP Zhang, T, Univ Massachusetts, Dept Microbiol, Amherst, MA 01003 USA.
EM tzhang@microbio.umass.edu
FU office of Naval Research [N00014-09-1-0190]
FX This work was supported by the office of Naval Research (Award No.
   N00014-09-1-0190).
NR 69
TC 1
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1462-2912
J9 ENVIRON MICROBIOL
JI Environ. Microbiol.
PD APR
PY 2010
VL 12
IS 4
BP 1011
EP 1020
DI 10.1111/j.1462-2920.2009.02145.x
PG 10
SC Microbiology
GA 587XO
UT ISI:000277029900015
ER

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