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The open circuit potential of Geobacter sulfurreducens bioanodes depends on the electrochemical adaptation of the strain

Soussan, Laurence and Erable, Benjamin and Délia, Marie-Line and Bergel, Alain The open circuit potential of Geobacter sulfurreducens bioanodes depends on the electrochemical adaptation of the strain. (2013) Electrochemistry Communications, vol. 33. pp. 35-38. ISSN 1388-2481

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Official URL: http://dx.doi.org/10.1016/j.elecom.2013.04.013

Abstract

Bioanodes for acetate oxidation were formed with pure cultures of Geobacter sulfurreducens under constant polarization potential. With the original commercial strain, the bioanodes formed at + 0.2 V/SCE exhibited open circuit potential (OCP) of 0.0 V/SCE, while the bioanodes formed at − 0.2 V/SCE had OCP around − 0.52 V/SCE. In contrast, the bioanodes formed with bacterial cells collected from a previous current-producing bioanode exhibited OCP of − 0.52 V/SCE whatever the polarization potential used to form them (+ 0.2 V/SCE or − 0.2 V/SCE). The "electrochemically-adapted strain" kept its electrochemical characteristics after successive cultures in solution. High steady-state currents were reached (16-19 A m- 2) in all cases without any dependence on strain adaptation or applied potential.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at The original PDF of the article can be found at Electrochemistry Communications: http://www.sciencedirect.com/science/article/pii/S1388248113001537
HAL Id:hal-00860257
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Other partners > Université de Montpellier 2 (FRANCE)
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Deposited By: Benjamin ERABLE
Deposited On:10 Sep 2013 11:52

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