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Corrosion behavior of SRB Desulfobulbus propionicus isolated from an Indian petroleum refinery on mild steel / B. Anandkumar in Materials and corrosion, Vol. 63 N° 4 (Avril 2012) 

Public ISBD [article]  in Materials and corrosion > Vol. 63 N° 4 (Avril 2012) . - pp. 355–362 Titre : Corrosion behavior of SRB Desulfobulbus propionicus isolated from an Indian petroleum refinery on mild steel Type de document : texte imprimé Auteurs : B. Anandkumar, Auteur ; R. P. George, Auteur ; S. Maruthamuthu, Auteur Année de publication : 2012 Article en page(s) : pp. 355–362 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Microbiological  corrosion;  mild  steel;  polarization;  weight  loss;  X-ray  diffraction Résumé : In this study, Desulfobulbus propionicus (D. propionicus), a sulfate reducing bacterium (SRB) was isolated and identified in cooling towers by molecular biologic techniques. This bacterial species has been reported for the first time in the cooling towers of an Indian petroleum refinery. Corrosion behaviors were analyzed by electrochemical and weight loss methods. The high corrosion rate and the enhancement of anodic current in increased chloride environment was noticed in the presence of D. propionicus indicating that this SRB species enhances the pitting corrosion of mild steel. Propionate metabolism in H2S production is discussed as a new pathway of corrosion enhancement. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005883/abstract [article] Corrosion behavior of SRB Desulfobulbus propionicus isolated from an Indian petroleum refinery on mild steel [texte imprimé] / B. Anandkumar, Auteur ; R. P. George, Auteur ; S. Maruthamuthu, Auteur . - 2012 . - pp. 355–362. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 63 N° 4 (Avril 2012) . - pp. 355–362 Mots-clés : Microbiological  corrosion;  mild  steel;  polarization;  weight  loss;  X-ray  diffraction Résumé : In this study, Desulfobulbus propionicus (D. propionicus), a sulfate reducing bacterium (SRB) was isolated and identified in cooling towers by molecular biologic techniques. This bacterial species has been reported for the first time in the cooling towers of an Indian petroleum refinery. Corrosion behaviors were analyzed by electrochemical and weight loss methods. The high corrosion rate and the enhancement of anodic current in increased chloride environment was noticed in the presence of D. propionicus indicating that this SRB species enhances the pitting corrosion of mild steel. Propionate metabolism in H2S production is discussed as a new pathway of corrosion enhancement. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005883/abstract