通过向 X65 管道钢中添加铜来减轻铜绿假单胞菌 MCCC 1A00099 引起的微生物腐蚀。
Mitigation of microbial corrosion by Cu addition to X65 pipeline steel by Pseudomonas aeruginosa MCCC 1A00099.
机构信息
University of Science and Technology Liaoning, Anshan, 114051, China.
Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China.
出版信息
Arch Microbiol. 2022 May 6;204(6):299. doi: 10.1007/s00203-022-02926-6.
Microbiologically influenced corrosion (MIC) is becoming a knotty problem for transmission pipelines. Developing MIC mitigation strategies for pipelines is increasingly urgent. In this study, MIC resistance against Pseudomonas aeruginosa of the X65 pipeline steels with (X65Cu) and without (X65) Cu addition was comparatively studied by electrochemical measurements and surface observation. Experimental results demonstrated that the corrosion rate of X65Cu steel was lower than that of X65 steel no matter in sterile or bacteria-containing media. Cu addition is helpful to the formation of the rust layer in the sterile medium. Surface observation showed that X65Cu steel exhibited a better MIC resistance against P. aeruginosa than that of X65 steel. Cu ions released from the X65Cu steel could effectively kill the P. aeruginosa attached on the steel surface, thus evidently decreased the pit depth and diameter.
微生物影响腐蚀（MIC）正在成为输送管道的一个棘手问题。开发针对管道的 MIC 缓解策略变得日益紧迫。在这项研究中，通过电化学测量和表面观察比较了添加（X65Cu）和未添加（X65）铜的 X65 管线钢对铜绿假单胞菌的 MIC 抗性。实验结果表明，无论在无菌或含菌介质中，X65Cu 钢的腐蚀速率均低于 X65 钢。铜的添加有助于在无菌介质中形成锈层。表面观察表明，X65Cu 钢对铜绿假单胞菌的 MIC 抗性优于 X65 钢。从 X65Cu 钢中释放出的铜离子可以有效地杀死附着在钢表面的铜绿假单胞菌，从而明显降低了蚀坑的深度和直径。
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