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Geobacter sulfurreducens: an iron reducing bacterium that can protect carbon steel against corrosion ?

Cote Coy, Claudia and Rosas, Omar and Basséguy, Régine Geobacter sulfurreducens: an iron reducing bacterium that can protect carbon steel against corrosion ? (2015) Corrosion Science, 94. 104-113. ISSN 0010-938X

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Official URL: https://doi.org/10.1016/j.corsci.2015.01.044

Abstract

The effect of Geobacter sulfurreducens on the electrochemical behaviour of carbon steel in anaerobic phosphate solution is studied here. In natural environments, G. sulfurreducens is able to reduce Fe(III) to Fe(II) during the oxidation of acetate. High availability of Fe(II) promoted the formation of an iron (II) phosphate layer on the steel. It is assumed that this phosphate layer, formed only when bacteria were present, is responsible for maintaining the corrosion potential stable even after intrusion of air. In contrast, the corrosion potential in the abiotic experiments suffered an increase of 450 mV after few hours of exposure to air.

Item Type:Article
HAL Id:hal-02134806
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Loetitia MOYA
Deposited On:02 Oct 2018 08:05

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