Biofilm and Nanowire Production Leads to Increased Current in Geobacter sulfurreducens Fuel Cells

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 bio...

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Veröffentlicht in:Applied and Environmental Microbiology 2006-11, Vol.72 (11), p.7345-7348
Hauptverfasser: Reguera, Gemma, Nevin, Kelly P, Nicoll, Julie S, Covalla, Sean F, Woodard, Trevor L, Lovley, Derek R
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container_issue 11
container_start_page 7345
container_title Applied and Environmental Microbiology
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creator Reguera, Gemma
Nevin, Kelly P
Nicoll, Julie S
Covalla, Sean F
Woodard, Trevor L
Lovley, Derek R
description 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.
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subjects Acetates - metabolism
Bioelectric Energy Sources
Biofilms
Biofilms - growth & development
Biological and medical sciences
Cells
Electricity
Electrodes - microbiology
Electron transfer
Electron Transport
Fimbriae, Bacterial - genetics
Fimbriae, Bacterial - metabolism
Fundamental and applied biological sciences. Psychology
Genetics
Geobacter - genetics
Geobacter - growth & development
Geobacter - physiology
Geobacter - ultrastructure
Geobacter sulfurreducens
Microbiology
Microscopy, Confocal
Mutation
Nanowires
Physiology and Biotechnology
title Biofilm and Nanowire Production Leads to Increased Current in Geobacter sulfurreducens Fuel Cells
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