随着金属材料在各行各业的广泛应用,材料的腐蚀问题也日益凸显,其不仅缩短了工程结构的使用寿命,大大增加了维护维修费用,而且还直接影响了工程设施或设备的使用安全甚至危及人类生命,造成了巨大的隐患。微生物对金属材料腐蚀现象具有相当的普遍性,该现象普遍存在于土壤、空气,海洋和油田等环境中,已得到越来越多的重视。其中硫酸盐还原菌是最重要的一种腐蚀微生物,它们通常可粘附在固体金属或其他材料表面,进而形成复杂的生物膜,可对金属材料造成严重的腐蚀危害。因此,对金属材料的硫酸盐还原菌腐蚀现象的深入研究有着重要的意义。论文介绍了硫酸盐还原菌的生理特征,重点阐述了硫酸盐还原菌对金属材料腐蚀过程的影响因素,包括材料因素,环境因素(Cl-、Fe2 、磁场、温度等)和其他因素(pH、含氧量、CO2、流速等),详细综述了微生物腐蚀的3个控制方法,包括物理方法,化学方法和生物方法。最后,提出了目前微生物腐蚀研究存在的一些问题并探讨了未来的研究发展方向。
Abstract
With the wide application of metal materials in all walks of life, The corrosion of materials is becoming more and more prominent. It not only shortens the service life of the engineering structure, and increases the maintenance cost, but also directly affects the safety of the use of engineering facilities or equipment, and even endanger human life, resulting in a huge risk. The corrosion phenomenon of metal materials is quite common, which is widely found in soil, air, marine and oil fields, having received more and more attention. Sulfate reducing bacteria(SRB) is one of the most important kind of corrosion microorganisms. They are usually adhered to the surface of solid metal or other materials and form a complex biofilm, which can cause serious corrosion damage to metal materials. Therefore, it is of great significance to study the corrosion of SRB in metal materials. The characteristic of SRB was introduced. The effects of material factors ,environmental factors (chloride ions, iron ions, magnetic field and temperature etc.) and other factors(pH, oxygen content,CO2,flow velocity etc.) on SRB influenced Corrosion were analyzed. Three kinds of control measures antisepsis techniques was detailedly introduced by SRB, including physical methods, chemical methods andbiological methods. The existed problems and the further direction of research in microbiologically influenced corrosion were discussed.
关键词
硫酸盐还原菌;材料因素;温度;磁场;离子浓度;防腐技术
Key words
sulfate-reducing;bacteria,material;factors,temperature, magnetic;field,inonic;concentration,antisepsis;techniques
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基金
国家自然科学基金(51574147)资助项目;辽宁省教育厅重点实验室基础研究项目(LZ2014027)