电化学微生物腐蚀(Electrical microbial influenced corrosion,EMIC)广泛存在于各种输水、油、气管道和海洋工程中.与其他微生物腐蚀相比,EMIC中微生物能够直接利用金属获取电子,腐蚀速率更快,腐蚀程度也更为严重.本文在阐述能够引起EMIC的电化学活性微生物的基础上,系统总结了EMIC的3种胞外电子转移机制,探讨了EMIC的胞外电子转移与微生物代谢的相关性,指出了EMIC的发展方向.
Electrical microbial influenced induced corrosion (EMIC) is recognized to be widespread in many environments related with such as water,oil,gas pipelines and marine engineering etc.Compared with other microbial corrosions,during the EMIC process the relevant microorganisms can directly capture electrons from metals,thereby which causes higher corrosion rate.In this paper,three kinds of extracellular electron transfer mechanisms of EMIC were summarized on the basis of introducing the electrochemical active microorganisms which can induce EMIC,and the relationship between EMIC extracellular electron transfer and microbial metabolism was discussed.The future direction in the research of EMIC was also pointed out.
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