Synergistic effect of carbon starvation and exogenous redox mediators on corrosion of X70 pipeline steel induced by Desulfovibrio singaporenus

被引：43

作者：

Guan, Fang ^{[1
,2
,3
]}

Liu, Zheng ^{[1
,2
,3
]}

Dong, Xucheng ^{[1
,2
,3
,4
]}

Zhai, Xiaofan ^{[1
,2
,3
]}

Zhang, BinBin ^{[1
,2
,3
]}

Duan, Jizhou ^{[1
,2
,3
]}

Wang, Nan ^{[1
,2
,3
]}

Gao, Ying ^{[1
,2
,3
,4
]}

Yang, Lihui ^{[1
,2
,3
]}

Hou, Baorong ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Key Lab Marine Environm Corros & Biofouling, Inst Oceanol, Qingdao 266237, Peoples R China

[2] Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China

[3] Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China

[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2021年 / 788卷

基金：

中国国家自然科学基金;

关键词：

Microbiologically influenced corrosion; Extracellular electron transfer; Sulfate-reducing bacteria; Riboflavin; Cytochrome c; X70 pipeline steel; SULFATE-REDUCING BACTERIA; KRAMERS-KRONIG TRANSFORMS; MICROBIOLOGICALLY INFLUENCED CORROSION; EXTRACELLULAR ELECTRON-TRANSFER; ELECTROCHEMICAL IMPEDANCE DATA; VULGARIS; VOLTAMMETRY; MECHANISM; BIOFILMS; STRESS;

D O I：

10.1016/j.scitotenv.2021.147573

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In microbiologically influenced corrosion (MIC) induced by sulfate-reducing bacteria (SRB), the electrons released from iron were transferred via extracellular electron transfer (EET) to the inner cells. Electron mediators and carbon starvation have also been found to promote steel corrosion. This study aimed to investigate the synergistic effects of electron mediators and carbon starvation on MIC and their effect on biofilm catalytic activity. The results demonstrated that the weight losses of X70 steelwere 0.68 and 1.03 mg/cm(2) in 100% and 10% carbon source (CS) SRB solution, respectively. The addition of riboflavin and cytochrome c increased the corrosion rate by 1.76 and 1.87 times, respectively, in the 100% CS SRB medium compared to the medium without exogenous redox mediators. For the 10% CS SRB medium, the corrosion rate increased by 1.40 and 1.89 times, respectively, when riboflavin and cytochrome c were added. The addition of riboflavin and cytochrome c also enhanced the biocatalytic activity of the SRB biofilm in both the 100% and 10% CS SRB media. (C) 2021 Published by Elsevier B.V.

引用

页数：9

共 55 条

[1]

ASTM, 2003, Standard practice for preparing, cleaning, and evaluating corrosion test specimens (ASTM G1-03)

[2] Electrochemical characterization of direct electron uptake in electrical microbially influenced corrosion of iron by the lithoautotrophic SRB Desulfopila corrodens strain IS4 [J].