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Mechanisms of Bacterial Extracellular Electron Exchange. [PDF]
, 2016 The biochemical mechanisms by which microbes interact with extracellular soluble metal ions and insoluble redox-active minerals have been the focus of intense research over the last three decades. The process presents two challenges to the microorganism;
Butt, Julea N. +5 more
core +1 more source
Frontiers in Microbiology, 2016 The metal-reducing bacterium Geobacter sulfurreducens requires the expression of conductive pili to reduce iron oxides and to wire electroactive biofilms, but the role of pilus retraction in these functions has remained elusive.
Allison Speers +7 more
doaj +1 more source
Geabacter species enhances pit depth on 304L stainless steel in a medium lacking with electron donor [PDF]
, 2009 Geobacter sulfurreducens bacteria increased the open circuit potential of 304L stainless steel by around 320 mV in only a few hours after inoculation. This represents a significant increase in the corrosion risk.
Basséguy, Régine +5 more
core +3 more sources
Biochemical Capacitance of Geobacter Sulfurreducens Biofilms
ChemSusChem, 2015 AbstractAn electrical model able to decouple the electron pathway from microbial cell machinery impedance terms is introduced. In this context, capacitance characteristics of the biofilm are clearly resolved. In other words, the model allows separating, according to the advantage of frequency and spectroscopic response approach, the different terms ...
Bueno, Paulo R. +4 more
openaire +4 more sources
Enhanced Uranium Immobilization and Reduction by Geobacter sulfurreducens Biofilms [PDF]
Applied and Environmental Microbiology, 2014 ABSTRACT Biofilms formed by dissimilatory metal reducers are of interest to develop permeable biobarriers for the immobilization of soluble contaminants such as uranium. Here we show that biofilms of the model uranium-reducing bacterium Geobacter sulfurreducens immobilized substantially more U(VI) than ...
Dena L, Cologgi +4 more
openaire +2 more sources
mBio, 2013 It has been proposed that Geobacter sulfurreducens requires conductive pili for long-range electron transport to Fe(III) oxides and for high-density current production in microbial fuel cells. In order to investigate this further, we constructed a strain
Madeline Vargas +8 more
doaj +1 more source
Effect of surface roughness, biofilm coverage and biofilm structure on the electrochemical efficiency of microbial cathodes [PDF]
, 2011 Biofilms of Geobacter sulfurreducens were formed under chronoamperometry at −0.5 V and −0.6 V vs. Ag/AgCl on stainless steel cathodes and tested for fumarate reduction.
Bergel, Alain +2 more
core +2 more sources
100 years of microbial electricity production : three concepts for the future [PDF]
, 2012 Bioelectrochemical systems (BES) have been explored according to three main concepts: to produce energy from organic substrates, to generate products and to provide specific environmental services.
Arends, Jan, Verstraete, Willy
core +2 more sources
Electrochemical characterization of Geobacter lovleyi identifies limitations of microbial fuel cell performance in constructed wetlands [PDF]
, 2017 Microbial Fuel Cells implemented in Constructed Wetlands (CW-MFCs) show limited performance. Geobacter Lovleyi has been demonstrated to be one of the predominant bacterial species in active CW-MFCs. The aim of this study was to characterize the growth of
Corbella Vidal, Clara +3 more
core +6 more sources
The relay network of Geobacter biofilms [PDF]
, 2018 While actual models explaining electron conduction in electricity producing biofilms have evolved separately to apparent irreconcilable conceptual positions, finding cytochrome complexes in the external matrix of Geobacter biofilms supports the proposal ...
Busalmen, Juan Pablo +3 more
core +1 more source