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Corrosion behavior and mechanism of carbon steel influenced by interior deposit microflora of an in-service pipeline
Su, Hong1,2; Tang, Ruohao1,2; Peng, Xiaowei1; Gao, Aiguo3; Han, Yejun1
2020-04-01
Source PublicationBIOELECTROCHEMISTRY
ISSN1567-5394
Volume132Pages:9
AbstractInvestigation of carbon steel corrosion influenced by in-situ microbial communities can provide reliable information about microbiologically influenced corrosion (MIC) in the oil and gas field. Here, we investigated the 90-day corrosion behavior of Q235 carbon steel influenced by interior deposit microflora of an in-service pipeline using open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS). Linear sweep voltammetry (LSV), 16S rRNA gene sequencing, and surface analysis were used to comprehensively analyze the corrosion mechanisms. The results indicated that OCP was decreased while the charge transfer resistance (Ra) was increased, and that steel corrosion was inhibited during the first 45 days. Subsequently, OCP was significantly increased while Rct was rapidly decreased, and steel corrosion was enhanced. After 90-day immersion, severe pitting corrosion with a maximum pit depth of 89.6 mu m occurred on the steel surface. Viable microbes in the final biofilm significantly increased the cathodic current. Iron carbonate, chukanovite and cementite were identified as the main corrosion products on the steel surface. Methanobacterium dominated the final biofilm community. These observations indicate that the corrosion mechanism of the final biofilm can be explained by extracellular electron transfer MIC in which microbes corrode steel by direct electron uptake. (C) 2019 Elsevier B.V. All rights reserved.
KeywordCarbon steel EIS Polarization 16S rRNA sequencing Microbiologically influenced corrosion Direct electron uptake
DOI10.1016/j.bioelechem.2019.107406
Language英语
WOS KeywordMICROBIOLOGICALLY INFLUENCED CORROSION ; SULFATE-REDUCING BACTERIA ; IRON-OXIDIZING BACTERIA ; SP NOV. ; IMPEDANCE ; MICROSTRUCTURE ; SPECTROSCOPY ; INHIBITION ; ALUMINUM ; XPS
Funding ProjectNational Natural Science Foundation of China[21676279]
WOS Research AreaBiochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics ; Biophysics ; Electrochemistry
WOS SubjectBiochemistry & Molecular Biology ; Biology ; Biophysics ; Electrochemistry
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000518670600002
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39804
Collection中国科学院过程工程研究所
Corresponding AuthorHan, Yejun
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100099, Peoples R China
3.PetroChina, Oil Prod Co Dagang Oilfield 3, Cangzhou 061023, Peoples R China
Recommended Citation
GB/T 7714
Su, Hong,Tang, Ruohao,Peng, Xiaowei,et al. Corrosion behavior and mechanism of carbon steel influenced by interior deposit microflora of an in-service pipeline[J]. BIOELECTROCHEMISTRY,2020,132:9.
APA Su, Hong,Tang, Ruohao,Peng, Xiaowei,Gao, Aiguo,&Han, Yejun.(2020).Corrosion behavior and mechanism of carbon steel influenced by interior deposit microflora of an in-service pipeline.BIOELECTROCHEMISTRY,132,9.
MLA Su, Hong,et al."Corrosion behavior and mechanism of carbon steel influenced by interior deposit microflora of an in-service pipeline".BIOELECTROCHEMISTRY 132(2020):9.
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