Formation of the Fe(II)–Fe(III) hydroxysulphate green rust during marine corrosion of steel

Refait, Philippe; Memet, Jean-Bernard; Bon, Chris Yeajoon; Sabot, R.; Génin, J.‐M. R.

doi:10.1016/s0010-938x(02)00184-1

Cited by 135 publications

(58 citation statements)

References 30 publications

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“…Lepidocrocite (iron(III) oxy-hydroxide) comprises the external layer, and the internal layer is composed of green rust and iron sulphides (FeS 2 ). Because green rust and iron sulphides are stable only in anaerobic environments [21], the observed transition is probably related to the establishment of anaerobic conditions. An increase in corrosion rate marks the beginning of the second phase.…”

Section: Discussionmentioning

confidence: 99%

Interactions between steels and sulphide-producing bacteria—Corrosion of carbon steels and low-alloy steels in natural seawater

Malard

Kervadec

Gil

et al. 2008

Electrochimica Acta

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Section: Discussionmentioning

confidence: 99%

Interactions between steels and sulphide-producing bacteria—Corrosion of carbon steels and low-alloy steels in natural seawater

Malard

Kervadec

Gil

et al. 2008

Electrochimica Acta

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“…They were observed as corrosion products on the surface of various materials: water pipes [1], steel sheet piles [2] and granular iron [3]. Due to the presence of Fe II , these compounds are very reactive and are easily oxidized into ferric oxyhydroxides.…”

Section: Introductionmentioning

confidence: 99%

Chemical stability of hydroxysulphate green rust synthetised in the presence of foreign anions: carbonate, phosphate and silicate

et al. 2006

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Hydroxysulphate green rust GR SO 2À 4 À Á È É species were precipitated in the presence of various anions. GR SO 2À 4 ÀÁ is stable at ∼pH 7 and is transformed into a mixture of magnetite and ferrous hydroxide when the pH raised at ∼12. In the presence of carbonate species, GR SO 2À 4 À Á is partially transformed into a mixture of magnetite and siderite at ∼pH 8.5. This transformation is stopped when silicate anions are present in the solution. As already observed for phosphate anions, the adsorption of silicate anions on the lateral faces of the GR SO 2À 4 À Á crystals may explain this stabilization effect. Sulphate anions are easily exchanged by carbonate species at ∼pH 10.5. In contrast, anionic exchange between sulphate and phosphate anions was not observed.

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“…In this study, it was suggested strongly that the interaction of iron reducing bacteria and sulphate reducing bacteria must be responsible for the catastrophic corrosion of steel in the marine environment [1]. Microbiologically Influenced Corrosion (MIC) proceeds in two steps: the reduction of ferric oxyhydroxides by DIRB to produce Fe 2+ , which then form GR2(SO 2À 4 ), and the reduction of the sulphate ions trapped within the interlayers of the GR2(SO 2À 4 ) structure by SRB into sulphides and its subsequent reaction with Fe 2+ to form ferrous sulphides.…”

Section: Resultsmentioning

confidence: 94%

Monitoring structural transformation of hydroxy-sulphate green rust in the presence of sulphate reducing bacteria

Abdelmoula¹,

Zegeye²,

Jorand³

et al. 2006

Hyperfine Interact

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The activities of bacterial consortia enable organisms to maximize their metabolic capabilities. This article assesses the synergetic relationship between iron reducing bacteria (IRB), Shewanella putrefaciens and sulphate reducing bacteria (SRB) Desulfovibrio alaskensis. Thus, the aim of this study was first to form a biogenic hydroxysulpahte green rust GR2(SO 2À 4 ) through the bioreduction of lepidocrocite by S. putrefaciens and secondly to investigate if sulfate anions intercalated in the biogenic GR2(SO 2À 4 ) could serve as final electron acceptor for a sulfate reducing bacterium, D. alaskensis. The results indicate that the IRB lead to the formation of GR2(SO 2À 4 ) and this mineral serve as an electron acceptor for SRB. GR2(SO 2À 4 ) precipitation and its transformation was demonstrated by using X-ray diffraction (DRX), Mössbauer spectroscopy (TMS) and transmission electron spectroscopy (TEM). These observations point out the possible acceleration of steel corrosion in marine environment in presence of IRB/SRB consortia.

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Formation of the Fe(II)–Fe(III) hydroxysulphate green rust during marine corrosion of steel

Cited by 135 publications

References 30 publications

Interactions between steels and sulphide-producing bacteria—Corrosion of carbon steels and low-alloy steels in natural seawater

Interactions between steels and sulphide-producing bacteria—Corrosion of carbon steels and low-alloy steels in natural seawater

Chemical stability of hydroxysulphate green rust synthetised in the presence of foreign anions: carbonate, phosphate and silicate

Monitoring structural transformation of hydroxy-sulphate green rust in the presence of sulphate reducing bacteria

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