Corrosion behavior of carbon steel in the presence of sulfate reducing bacteria and iron oxidizing bacteria cultured in oilfield produced water. (November 2015)

• Record Type: Journal Article
• Authors: Liu, Hongwei; Fu, Chaoyang; Gu, Tingyue; Zhang, Guoan; Lv, Yalin; Wang, Haitao; Liu, Hongfang
• Is Part Of: Corrosion science. Volume 100(2015)
• Page Start: 484
• Page End: 495
• Publication Date: 2015-11
• Subjects: A. Carbon steel -- B. EIS -- B. SEM -- B. XRD -- C. Microbiological corrosion; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2015.08.023
• Languages: English
• ISSNs: 0010-938X

Abstract

Graphical abstract: Highlights: Sulfate-reducing bacteria and iron-oxidizing bacteria are the primary microorganisms which contribute to the metal corrosion. The mixture of sulfate-reducing bacteria and iron-oxidizing bacteria has a synergistic effect enhancing the pitting corrosion of the coupon. The limited amount of dissolved oxygen in artificial produced water plays a key role in the corrosion process of carbon steel. Abstract: The corrosion behavior of carbon steel was investigated in the presence of SRB and IOB separately in their respective culture media and in the mixed culture of SRB and IOB in artificially produced water with 4.2 mg/L dissolved oxygen. The results showed that IOB inhibited the growth of planktonic SRB, but promoted the growth of sessile SRB when SRB was cultured together with IOB. The mixture of SRB and IOB had a synergistic effect enhancing the pitting corrosion of the coupons. The limited amount of dissolved oxygen played a key role in the formation of corrosion products.