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Effect of Host Media on Microbial Influenced Corrosion due to Desulfovibrio desulfuricans
Abstract:
Present paper presents study on microbial induced corrosion (MIC) on stainless steels due to Desulfovibrio desulfuricans in different host media e.g. inoculated modified Baar’s media, sodium chloride solution and artificial sea water in anaerobic conditions. Electrochemical polarization and immersion tests were performed for estimating corrosion attack. Corrosion was observed maximum in case of exposure to sea water followed by NaCl solution, both having sulfide and chloride whereas stainless steel exposed to Baar’s media, having sulfide, showed minimum attack. Tendency of extracellular polymeric substances (EPS) to bind metal ions is found to be responsible for governing the extent of corrosion attack.
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783-788
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Online since:
January 2013
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© 2013 Trans Tech Publications Ltd. All Rights Reserved
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