Microbiologically Influenced Corrosion Of S45c Mild Steel In Cassava Mill Effluent
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Date
2012
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Research Journal in Engineering and Applied Sciences
Abstract
In the cassava processing mill S45C mild steel is used as the construction material for the grating. The S45C mild steel exposed to the cassava mill effluent faces possible corrosion action due to the microorganisms. In the present study the role of microorganisms in cassava mill effluent on the corrosion of S45C mild steel has been experimentally investigated. Outcome of this investigation provides opportunities for material selection in the
construction of cassava mill. Chemical and biological characterises of cassava mill effluent was also experimentally determined. Corrosion rate has been estimated by weight loss measurements. Results indicate the cassava mill effluent exhibits the necessary qualities of an environment suitable for the promotion and sustenance of microbiologically influenced corrosion. The corrosion rates of S45C mild steel in the cassava mill effluent were 1.37, 1.41, 1.60, 1.85, 1.88 mpy at 10, 20, 30 40 and 50 days respectively. Pseudomonas sp., Streptococcus sp., Micrococcus sp., Bacillus sp., Neisseria sp. and Lactobacillus sp. were identified in cassava mill effluent.
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