The respective roles of sulfate-reducing bacteria (SRB) and iron-oxidizing bacteria (IOB) in the mixed microbial corrosion process of carbon steel pipelines

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-09-23 DOI:10.1016/j.corsci.2024.112479

Xiaozhen Liu , Yuhui Wang , Yingwei Song , Wenfang Liu , Jin Zhang , Nana Li , Kaihui Dong , Yong Cai , En-Hou Han

引用次数: 0

Abstract

The respective roles of IOB and SRB in mixed microbial corrosion of carbon steel pipelines were investigated by surface analysis and electrochemical measurements. The results indicate that in initial corrosion stage the extracellular polymeric substances (EPS) of SRBs can hinder the adhesion of IOB and inhibit corrosion nodulation formation. As SRB:IOB increases from 0:22500 cells/mL to 22500:22500 cells/mL, the size and number of corrosion nodulations decrease by two orders of magnitude. In latter corrosion stage, the SRBs become the dominant microbes, accelerating the propagation of corrosion nodulations in mixed microbial system due to low dissolved oxygen (DO).

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硫酸盐还原菌（SRB）和铁氧化菌（IOB）在碳钢管道混合微生物腐蚀过程中各自的作用

通过表面分析和电化学测量，研究了 IOB 和 SRB 在碳钢管道混合微生物腐蚀中各自的作用。结果表明，在腐蚀初期，SRB 的胞外聚合物（EPS）会阻碍 IOB 的粘附，抑制腐蚀结节的形成。随着 SRB:IOB 从 0:22500 cells/mL 增加到 22500:22500 cells/mL，腐蚀结节的大小和数量减少了两个数量级。在腐蚀后期，SRB 成为主要微生物，由于溶解氧（DO）较低，加速了混合微生物系统中腐蚀结核的繁殖。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.