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Distinguishing the Contribution of Extracellular Electron Transfer in the Desulfovibrio caledoniensis-Induced Total Corrosion of Q235 Carbon Steel

文献类型：期刊论文

作者Fan, Keliang4,5; Guan, Fang3,4; Zhai, Xiaofan4,5; Jiao, Guanhua5; Sang, Yugang2,4; Jing, Min1; Duan, Jizhou4
刊名MATERIALS
出版日期2025-04-02
卷号18期号:7页码:17
关键词microbially influenced corrosion electrical microbially influenced corrosion carbon source sulfate-reducing bacteria electrochemical mechanism
DOI10.3390/ma18071613
通讯作者Guan, Fang(guanfang@qdio.ac.cn) ; Zhai, Xiaofan(zhaixf@qdio.ac.cn)
英文摘要Microbially influenced corrosion (MIC) in anaerobic environments accounts for many severe failures and losses in different industries. Sulfate-reducing bacteria (SRB) represent a typical class of corrosive microorganisms capable of acquiring electrons from steel through extracellular electron transfer processes, thereby inducing severe electrical microbially influenced corrosion (EMIC). Although prior research has underscored the significance of extracellular electron transfer, the contribution of EMIC to the whole MIC has not been comprehensively studied. In this study, Q235 steel coupons were employed in an H-shaped electrochemical cell to conduct electrochemical and coupon immersion experiments, aiming to determine the contribution of EMIC to the overall MIC. The experiments were conducted under two distinct carbon source conditions: 100% carbon source (CS) and 1% CS environments. It was observed that the biotic electrodes exhibited significantly higher cathodic currents, with the most pronounced biological cathodic activity detected in the 100% CS biotic medium. The voltammetric responses of the electrodes before and after changes in the medium confirmed the biocatalytic capability of the attached biofilm in stimulating the cathodic reaction. The proportion of EMIC in MIC was calculated using linear polarization resistance, revealing a trend over time. Additionally, weight loss tests indicated that the contribution of EMIC to the total MIC was approximately 27.69%. Furthermore, the results demonstrated that while the overall corrosion rate was lower in the 1% CS environment, the proportion of EMIC in MIC increased to approximately 37.68%.
WOS关键词MICROBIOLOGICALLY INFLUENCED CORROSION ; SULFATE-REDUCING BACTERIA ; MICROBIALLY INFLUENCED CORROSION ; PSEUDOMONAS-AERUGINOSA ; TRANSFER MECHANISM ; BIOFILM ; IRON ; BEHAVIOR ; 304-STAINLESS-STEEL ; INHIBITION
资助项目Natural Science Foundation of Shandong Province ; National Natural Science Fund of China[42476209] ; Youth Science Foundation of Guangxi province[2023GXNSFBA026252] ; [ZR2023MD024]
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种英语
WOS记录号WOS:001463823100001
出版者MDPI
源URL[http://ir.qdio.ac.cn/handle/337002/201590]  
专题海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者Guan, Fang; Zhai, Xiaofan
作者单位1.Shandong Jianzhu Univ, Coll Mat Sci & Engn, Jinan 250101, Peoples R China
2.Qilu Univ Technol, Dept Mat Sci & Engn, Jinan 250353, Peoples R China
3.Guangxi Acad Sci, Inst Marine Corros Protect, Guangxi Key Lab Marine Environm Sci, 98 Daling Rd, Nanning 530007, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, State Key Lab Adv Marine Mat, Qingdao 266071, Peoples R China
5.Qilu Univ Technol, Dept Bioengn, Jinan 250353, Peoples R China
推荐引用方式
GB/T 7714		 Fan, Keliang,Guan, Fang,Zhai, Xiaofan,et al. Distinguishing the Contribution of Extracellular Electron Transfer in the Desulfovibrio caledoniensis-Induced Total Corrosion of Q235 Carbon Steel[J]. MATERIALS,2025,18(7):17.
APA Fan, Keliang.,Guan, Fang.,Zhai, Xiaofan.,Jiao, Guanhua.,Sang, Yugang.,...&Duan, Jizhou.(2025).Distinguishing the Contribution of Extracellular Electron Transfer in the Desulfovibrio caledoniensis-Induced Total Corrosion of Q235 Carbon Steel.MATERIALS,18(7),17.
MLA Fan, Keliang,et al."Distinguishing the Contribution of Extracellular Electron Transfer in the Desulfovibrio caledoniensis-Induced Total Corrosion of Q235 Carbon Steel".MATERIALS 18.7(2025):17.

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来源：海洋研究所

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