Biologically competitive effect of Desulfovibrio desulfurican and Pseudomonas stutzeri on corrosion of X80 pipeline steel in the Shenyang soil solution

被引：27
作者：
Fu, Qi [1 ,2 ]
Xu, Jin [2 ,3 ]
Wei, Boxin [1 ,2 ]
Qin, Qingyu [1 ,2 ]
Bai, Yunlong [2 ,3 ]
Yu, Changkun [2 ,3 ]
Sun, Cheng [2 ,3 ]
机构：
[1] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
[3] Liaoning Shenyang Soil & Atmosphere Corros Mat Na, Shenyang 110016, Peoples R China
来源：
BIOELECTROCHEMISTRY | 2022年 / 145卷
基金：
中国国家自然科学基金;
关键词：
SRB; NRB; X80; steel; Thermodynamics; Pitting corrosion; MICROBIOLOGICALLY INFLUENCED CORROSION; SULFATE-REDUCING BACTERIA; CARBON-STEEL; ALTERNATING-CURRENT; ELECTRON-TRANSFER; BEHAVIOR; AERUGINOSA; NITRATE; VULGARIS; BIOFILMS;
D O I：
10.1016/j.bioelechem.2022.108051
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
In this paper, we have investigated the corrosion mechanism of X80 carbon steel in the presence of nitrate reducing bacteria (NRB), sulfate reducing bacteria (SRB) or both in the Shenyang soil solution. The results show that both SRB and NRB increase the corrosion rate of steel specimens and cause pitting corrosion of steel. Electrochemical tests and weight-loss data show that the addition of NRB in the SRB-containing environment leads to the reduction of corrosion. The thermodynamic analyses confirm the competitive advantage of NRB for the nutrients (organic carbon sources and irons) and the chemical oxi-dation of ferrous sulfide by nitrite, which results in a mitigation in the microbiologically influence corro-sion (MIC) of SRB. (c) 2022 Elsevier B.V. All rights reserved.
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页数：14
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