Sulfate Reducing Bacteria Corrosion of Pipeline Steel in Fe-Rich Red Soil

doi:10.11900/0412.1961.2017.00095

CORC > 金属研究所 > 中国科学院金属研究所

	Sulfate Reducing Bacteria Corrosion of Pipeline Steel in Fe-Rich Red Soil
	Yu Libao 2,3; Yan Maocheng 2; Ma Jian 4; Wu Minghao 4; Shu Yun 1,2; Sun Cheng 2; Xu Jin 2; Yu Changkun 2; Qing Yongchang 2,3
刊名	ACTA METALLURGICA SINICA
	2017-12-11
卷号	53 期号:12 页码:1568-1578
关键词	pipeline steel microbiologically induced corrosion (MIC) soil corrosion electron transfer iron respiration
ISSN号	0412-1961
DOI	10.11900/0412.1961.2017.00095
通讯作者	Yan Maocheng(Yanmc@imr.ac.cn)
英文摘要	Corrosion of buried pipeline in iron-rich clay mineral, such as the red soil, is a great issue for safety and economy concern in various industrial applications, e.g. oil/gas, water, sewerage disposal systems, which may partly attribute to the active Fe oxides constituents residing in the clay. Although various parameters on metallic corrosion in red soil have been widely studied, some soil properties affecting corrosion are still not fully understood, such as synergistic action of sulfate reducing bacteria (SRB) and Fe oxides in iron-rich clay. Anaerobic SRB, which reduce sulfate to sulfide, have long been associated with corrosion of steel and have been the focus of most research on biocorrosion. Recently, there have been numerous studies showing that SRB can reduce oxidized metals, such as Fe(III), Mn(IV), and some SRB are capable of coupling metal reduction to growth, so Fe(III) reduction in clay minerals by SRB will have great impacts on corrosion processes. Most of previous studies focused on the single parameter, such as microbial activities, Fe oxides, but neglected their synergistic action. In this work, to further mechanistic understanding the synergistic action between SRB and Fe oxides, the indoor immersed experiment was desinged. Open circuit potential (E-OCP), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and polarization potential scanning were used to monitor the corrosion electrochemical process of the X80 pipeline steel electrode. Microscopic surface observation was studied by SEM. The results showed that, SRB had no significant effect on the electrochemical process during the environmental adaptation period (the initial 7 d). The decrease of E-OCP and electrochemical impedance (\|Z\|) of the X80 steel was resulted by the SRB iron respiration activity in the growing period, which significantly promoted the corrosion process of the steel. The SRB acts as an electron transport medium to participate in the electron transfer between Fe and iron oxide, which may lead to the electrochemical reduction of the iron oxides in the surface of red soil particles by the action of extracellular iron respiration, and it's the main reason to promote the local corrosion electrochemical process. The relationship between the corrosion of the material in the Fe-rich red soil and the microbial extracellular iron respiration was proposed.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA13040500] ; National RD Infrastructure and Facility Development Program of China[2005DKA10400CT-2-02]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000416301600003
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National RD Infrastructure and Facility Development Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/127106]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yan Maocheng
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.China Natl Petr Corp, Xinjiang Oilfield Branch Co, Karamay 834002, Peoples R China
推荐引用方式 GB/T 7714	Yu Libao,Yan Maocheng,Ma Jian,et al. Sulfate Reducing Bacteria Corrosion of Pipeline Steel in Fe-Rich Red Soil[J]. ACTA METALLURGICA SINICA,2017,53(12):1568-1578.
APA	Yu Libao.,Yan Maocheng.,Ma Jian.,Wu Minghao.,Shu Yun.,...&Qing Yongchang.(2017).Sulfate Reducing Bacteria Corrosion of Pipeline Steel in Fe-Rich Red Soil.ACTA METALLURGICA SINICA,53(12),1568-1578.
MLA	Yu Libao,et al."Sulfate Reducing Bacteria Corrosion of Pipeline Steel in Fe-Rich Red Soil".ACTA METALLURGICA SINICA 53.12(2017):1568-1578.