Biofilm and Nanowire Production Leads to Increased Current in <i>Geobacter sulfurreducens</i> Fuel Cells

Applied and Environmental Microbiology - Tập 72 Số 11 - Trang 7345-7348 - 2006
Gemma Reguera1, Kelly P. Nevin1, Julie S. Nicoll1, Sean F. Covalla1, Trevor L. Woodard1, Derek R. Lovley1
1Department of Microbiology, University of Massachusetts, Amherst, Massachusetts, 01003

Tóm tắt

ABSTRACT Geobacter sulfurreducens developed highly structured, multilayer biofilms on the anode surface of a microbial fuel cell converting acetate to electricity. Cells at a distance from the anode remained viable, and there was no decrease in the efficiency of current production as the thickness of the biofilm increased. Genetic studies demonstrated that efficient electron transfer through the biofilm required the presence of electrically conductive pili. These pili may represent an electronic network permeating the biofilm that can promote long-range electrical transfer in an energy-efficient manner, increasing electricity production more than 10-fold.

Từ khóa


Tài liệu tham khảo

10.1126/science.1066771

10.1128/AEM.69.3.1548-1555.2003

10.1038/nbt867

10.1128/AEM.67.7.3180-3187.2001

Gregory K. B. S. A. Sullivan and D. R. Lovley. 2005. Presented at the American Society for Microbiology General Meeting Atlanta Ga.

10.1007/s00248-003-0004-4

10.1111/j.1462-2920.2006.01065.x

Kim, B.-H., H.-J. Kim, M.-S. Hyun, and D.-H. Park. 1999. Direct electrode reaction of Fe(III)-reducing bacterium, Shewanella putrefaciens. J. Microbiol. Biotechol.9:127-131.

10.1046/j.1365-2958.2003.03525.x

10.1128/AEM.70.4.2525-2528.2004

10.1038/nrmicro1442

10.1016/S0065-2911(04)49005-5

10.1128/aem.54.6.1472-1480.1988

10.1126/science.1088727

10.1046/j.1365-2958.1998.01062.x

10.1038/nature03661

10.1038/nbt716

Thông tin
Thông tin xuất bản

Applied and Environmental Microbiology

Tập 72 Số 11

7345-7348

Thông tin tác giả