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

被引：40

作者：

Cote, Claudia ^{[1
]}

Rosas, Omar

Basseguy, Regine

机构：

[1] CNRS, Lab Genie Chim, F-31432 Toulouse, France

来源：

CORROSION SCIENCE | 2015年 / 94卷

关键词：

Mild steel; EIS; Microbiological corrosion; MARINE BIOFILMS; MILD-STEEL; REDUCTION; INHIBITION; VIVIANITE; FILM;

D O I：

10.1016/j.corsci.2015.01.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：104 / 113

页数：10

共 48 条

[1]

[Anonymous], MICROBIALLY INFLUENC

[2]

Bard A.J., 2001, INTRO OVERVIEW ELECT

[3]

Beech IB, 1999, REV MICROBIOL, V30, P177

[4] Effect of orthophosphate on the oxidation products of Fe(II)-Fe(III) hydroxycarbonate:: The transformation of green rust to ferrihydrite [J].