Knowledge Management System Of Institute of process engineering,CAS
| 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 Publication | BIOELECTROCHEMISTRY
 |
| ISSN | 1567-5394 |
| Volume | 132Pages:9 |
| Abstract | Investigation 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. |
| Keyword | Carbon steel EIS Polarization 16S rRNA sequencing Microbiologically influenced corrosion Direct electron uptake |
| DOI | 10.1016/j.bioelechem.2019.107406 |
| Language | 英语 |
| WOS Keyword | MICROBIOLOGICALLY INFLUENCED CORROSION ; SULFATE-REDUCING BACTERIA ; IRON-OXIDIZING BACTERIA ; SP NOV. ; IMPEDANCE ; MICROSTRUCTURE ; SPECTROSCOPY ; INHIBITION ; ALUMINUM ; XPS |
| Funding Project | National Natural Science Foundation of China[21676279] |
| WOS Research Area | Biochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics ; Biophysics ; Electrochemistry |
| WOS Subject | Biochemistry & Molecular Biology ; Biology ; Biophysics ; Electrochemistry |
| Funding Organization | National Natural Science Foundation of China |
| WOS ID | WOS:000518670600002 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/39804 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Han, Yejun |
| Affiliation | 1.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. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment