Assessment of effect of corrosive microorganisms on metal
Journal Title: International Journal of engineering Research and Applications - Year 2017, Vol 7, Issue 9
Abstract
One of the actual problems of damage to metal structures is microbial corrosion. Activity of microorganisms caused up to 80% of corrosion damage. We studied the effect of heterotrophic denitrifying microorganisms, thionic and sulfate-reducing bacteria on metal plates during cultivation in a liquid medium. It has been established that the most corrosive microorganisms are thionic bacteria. When they were cultivated, the weight loss of steel plates was 28.5-59.9% for 3 months. CRB also cause corrosion of the metal, but during the experiment the rate of failure of the metal was low. Heterotrophic denitrifying microorganisms slow down the process of metal corrosion due to the formation of biofilms on its surface.
Authors and Affiliations
Svetlana Aitkeldiyeva, Elmira Faizulina, Olga Auezova, Larissa Tatarkina, Aray Nurmukhanbetova, Amankeldy Sadanov
Keywords
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- DOI 10.9790/9622-0709085662.
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