Electrochemical investigation of increased carbon steel corrosion via extracellular electron transfer by a sulfate reducing bacterium under carbon source starvation

被引：142
作者：
Dou, Wenwen [1 ,2 ]
Liu, Jialin [2 ]
Cai, Weizhen [2 ]
Wang, Di [2 ]
Jia, Ru [2 ]
Chen, Shougang [1 ]
Gu, Tingyue [2 ]
机构：
[1] Ocean Univ China, Dept Mat Sci & Engn, Qingdao 266100, Peoples R China
[2] Ohio Univ, Inst Corros & Multiphase Technol, Dept Chem & Biomol Engn, Athens, OH 45701 USA
来源：
CORROSION SCIENCE | 2019年 / 150卷
基金：
中国国家自然科学基金;
关键词：
Sulfate reducing bacterium; Electrochemical techniques; Carbon source starvation; Microbiologically influenced corrosion; Extracellular electron transfer; MICROBIOLOGICALLY INFLUENCED CORROSION; DUPLEX STAINLESS-STEEL; WASTE-WATER TREATMENT; MICROBIAL FUEL-CELLS; PIPELINE STEEL; PASSIVATION BEHAVIOR; ASSISTED CRACKING; COPPER CORROSION; POTABLE WATER; ENVIRONMENT;
D O I：
10.1016/j.corsci.2019.02.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Microbiologically influenced corrosion (MIC) of carbon steel by sulfate reducing bacterium (SRB) Desulfovibrio vulgaris under organic carbon starvation was investigated using electrochemical methods to support weight loss and pitting data. 20% carbon source led to the highest weight loss (6.6 mg/cm(2)), while 100% had the lowest (3.3 mg/cm(2)) after 10 days. Linear polarization resistance and electrochemical impedance spectrometry data confirmed the weight loss and pitting data trends. The data in this work support the theory that carbon steel corrosion by SRB is due to electron harvest from extracellular iron oxidation by SRB, which belongs to extra cellular electron transfer MIC (EET-MIC).
引用
收藏
页码：258 / 267
页数：10
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