Products obtained by microbially-induced corrosion of steel in a marine environment: Role of green rust two |
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| Authors: | J. -M. R. Génin A. A. Olowe B. Resiak M. Confente N. Rollet-Benbouzid S. L'Haridon D. Prieur |
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| Affiliation: | (1) Laboratoire de Chimie Physique pour l'Environnement, Groupe de Spectrométrie Mössbauer, UMR 9992 CNRS, Université H. Poincaré, Nancy 1;(2) Département Sciences des Matériaux, ESSTIN, 405 rue de Vand!["oelig"]("/content/mx663884nx227640/xlarge339.gif") uvre, 54600 Villers-Nancy, France;(3) Unimétal Recherche, BP 140, F-57360 Amnéville, France;(4) Station Biologique CNRS, Place Teissier, BP 74, F-29682 Roscoff, France |
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| Abstract: | An unusual low-water corrosion of steel sheet piles has been systematically investigated in a channel harbour (Boulogne sur Mer, France). An analysis of the environment reveals that all sampling of dark rust taken at different heights above marine sediments and kept in anaerobic conditions present unusual concentrations of sulfate-reducing bacteria. The rust products have been characterized by Mössbauer spectroscopy and X-ray diffraction, comprising the ferrous—ferric sulfated compounds of formula 4Fe(OH)2 · 2FeOOH · FeSO4 ·nH2O, called green rust 2, mixed sometimes with magnetite and a small amount of ferrous sulfide. |
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