Journal
CORROSION SCIENCE
Volume 117, Issue -, Pages 24-34Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.01.006
Keywords
Carbon steel; SEM; XPS; Microbiological corrosion
Funding
- Shenzhen strategic emerging industry development special fund project [JCYJ20130401144744190]
- Innovation Foundation of Huazhong University of Science and Technology Innovation Institute [2015TS150, 2015ZZGH010]
- Analytical and Testing Center of the Huazhong University of Science and Technology
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Corrosion inhibition by benzalkonium chloride (BKC) against anaerobic CO2 corrosion and microbiologically influenced corrosion was studied using surface analysis, weight loss and electrochemical measurements. Results showed that the minimal bactericidal concentration of BKC against Desulfotomaculum nigrificans (D. nigrificans) was 40 mg L-1. While at this concentration the planktonic D. nigrificans cell count could recover after 21-day incubation, it resulted in 4 log reduction in sessile D. nigrificans cell count. When 80 mg L-1 BKC was used, both planktonic and sessile D. nigrificans became undetectable. It was found that at these concentrations, BKC reduced both uniform corrosion and pitting corrosion. (C) 2017 Elsevier Ltd. All rights reserved.
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