Journal
CORROSION SCIENCE
Volume 49, Issue 10, Pages 3917-3925Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2007.03.042
Keywords
iron-oxidizing bacteria; carbon steel; molybdate; microbiologically influenced corrosion; cooling water system
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The corrosion process characteristics in the presence of thermophilic strain TPH-7 were investigated. The results showed that (1) by adding Na2MoO4 to the sterilized solution, the steel could be well protected with the increasing of the concentration from 0 to 100 mg/l, which caused the decreasing of corrosion current; (2) in the solution with strain TPH-7 and Na2MoO4, corrosion product formed and corrosion current decreased slightly. Based on the SEM observation, strain TPH-7 would adhere to the steel surface to interfere with the corrosion inhibition process of steel by molybdate. Therefore, 100 mg/l Na2MoO4 could not inhibit the MIC caused by strain TPH-7. (c) 2007 Elsevier Ltd. All rights reserved.
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