Corrosion inhibition of carbon steel in CO2-containing oilfield produced water in the presence of iron-oxidizing bacteria and inhibitors. (April 2016)

• Record Type: Journal Article
• Authors: Liu, Hongwei; Gu, Tingyue; Zhang, Guoan; Wang, Wei; Dong, Shuang; Cheng, Yufeng; Liu, Hongfang
• Is Part Of: Corrosion science. Volume 105(2016)
• Page Start: 149
• Page End: 160
• Publication Date: 2016-04
• Subjects: B. EIS -- B. SEM -- C. Microbiological corrosion -- C. CO2 corrosion; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2016.01.012
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: Corrosion inhibitor behavior and mechanism are investigated in the presence of iron-oxidizing bacteria. Dodecanoic acid inhibits the adhesion of iron-oxidizing bacteria, but with the growth of planktonic IOB. Imidazoline derivative partially inhibits the formation of iron-oxidizing bacteria biofilm. Abstract: Inhibition effect of an imidazoline derivative, dodecanoic acid and dodecylamine against CO2 corrosion and microbiologically influence corrosion in a CO2 -containing oilfield produced water was studied using surface analysis, weight loss and electrochemical measurements. Results indicated that dodecanoic acid could inhibit the adhesion of iron-oxidizing bacteria (IOB) significantly on carbon steel coupons, but had no effect on the planktonic IOB growth. Its inhibition efficiency reached 88.2% after 43 days of incubation. An imidazoline derivative was found to inhibit the adhesion of IOB on the steel surface, and contributed to lower inhibition effect.