Mechanistic modeling of biocorrosion caused by biofilms of sulfate reducing bacteria and acid producing bacteria

IMR OpenIR

	Mechanistic modeling of biocorrosion caused by biofilms of sulfate reducing bacteria and acid producing bacteria
	Xu, Dake; Li, Yingchao; Gu, Tingyue; Li, YC (reprint author), Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, 100 Ping Le Yuan, Beijing 100124, Peoples R China.; Gu, TY (reprint author), Ohio Univ, Inst Corros & Multiphase Technol, Dept Chem & Biomol Engn, Athens, OH 45701 USA.
	2016-08-01
发表期刊	BIOELECTROCHEMISTRY
ISSN	1567-5394
卷号	110 页码:52-58
摘要	Biocorrosion is also known as microbiologically influenced corrosion (MIC). Most anaerobic MIC cases can be classified into two major types. Type I MIC involves non-oxygen oxidants such as sulfate and nitrate that require biocatalysis for their reduction in the cytoplasm of microbes such as sulfate reducing bacteria (SRB) and nitrate reducing bacteria (NRB). This means that the extracellular electrons from the oxidation of metal such as iron must be transported across cell walls into the cytoplasm. Type II MIC involves oxidants such as protons that are secreted by microbes such as acid producing bacteria (APB). The biofilms in this case supply the locally high concentrations of oxidants that are corrosive without biocatalysis. This work describes a mechanistic model that is based on the biocatalytic cathodic sulfate reduction (BCSR) theory. The model utilizes charge transfer and mass transfer concepts to describe the SRB biocorrosion process. The model also includes a mechanism to describe APB attack based on the local acidic pH at a pit bottom. A pitting prediction software package has been created based on the mechanisms. It predicts long-term pitting rates and worst-case scenarios after calibration using SRB short-term pit depth data. Various parameters can be investigated through computer simulation. (C) 2016 Elsevier B.V. All rights reserved.
部门归属	[xu, dake] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china ; [li, yingchao] beijing univ technol, coll mech engn & appl elect technol, 100 ping le yuan, beijing 100124, peoples r china ; [gu, tingyue] ohio univ, inst corros & multiphase technol, dept chem & biomol engn, athens, oh 45701 usa
关键词	Biocorrosion Microbiologically Influenced Corrosion Mechanism Model Charge Transfer Mass Transfer
学科领域	Biochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics ; Biophysics ; Electrochemistry
收录类别	sci
语种	英语
WOS记录号	WOS:000376701900007
引用统计	被引频次：232[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75783
专题	中国科学院金属研究所
通讯作者	Li, YC (reprint author), Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, 100 Ping Le Yuan, Beijing 100124, Peoples R China.; Gu, TY (reprint author), Ohio Univ, Inst Corros & Multiphase Technol, Dept Chem & Biomol Engn, Athens, OH 45701 USA.
推荐引用方式 GB/T 7714	Xu, Dake,Li, Yingchao,Gu, Tingyue,et al. Mechanistic modeling of biocorrosion caused by biofilms of sulfate reducing bacteria and acid producing bacteria[J]. BIOELECTROCHEMISTRY,2016,110:52-58.
APA	Xu, Dake,Li, Yingchao,Gu, Tingyue,Li, YC ,&Gu, TY .(2016).Mechanistic modeling of biocorrosion caused by biofilms of sulfate reducing bacteria and acid producing bacteria.BIOELECTROCHEMISTRY,110,52-58.
MLA	Xu, Dake,et al."Mechanistic modeling of biocorrosion caused by biofilms of sulfate reducing bacteria and acid producing bacteria".BIOELECTROCHEMISTRY 110(2016):52-58.