微生物抑制金属腐蚀机理的研究进展

传统金属防腐方法成本较高或者容易产生次生环境问题。微生物防腐蚀是一项新的绿色防腐技术，随着越来越多抗腐蚀微生物的发现，以及有益菌膜研究的开展，研究者们发现了微生物抑制金属腐蚀的众多机理，本文对此进行了归纳总结。微生物可以通过生物驱除、分泌腐蚀抑制剂、生成胞外多聚物、降低溶解氧、形成生物膜屏障、分泌生物表面活性剂、噬菌体控制、非生物膜屏障等过程控制和减缓金属腐蚀。金属的微生物腐蚀抑制作用通常不是由单一机制引起的，而是多种机制共同作用的结果。深入理解微生物抑制金属腐蚀的机理，有利于为减缓金属腐蚀行为提供借鉴。

Microbial inhibition of metal corrosion: a review

Traditional anti-corrosion methods are costly or may cause secondary pollution. Microbiologically influenced corrosion inhibition (MICI) is a new green anti-corrosion technology. With the discovery of variety anti-corrosion microorganisms and the development of the studies on beneficial bacterial films, many mechanisms of microbial inhibition of metal corrosion have been found. Microorganisms can inhibit or slow down metal corrosion by biocompetitive exclusion, secretion of corrosion inhibitors, generation of extracellular polymeric substances, reduction of dissolved oxygen, formation of biofilm barriers, secretion of biosurfactants, phage control, non-biofilm barriers and other processes. Microbial corrosion inhibition of metal is usually not caused by a single mechanism but rather a combination of different mechanisms. In-depth study of its inhibition mechanism is helpful to understand how to slow down the corrosion behavior of metals.