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Samson E Anichi
Samson E Anichi
Nigeria
Publications
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Research Article
Biodeterioration of Pipeline Concrete Coating Material by Iron Oxidizing and Sulphate Reducing Bacteria
Author(s): Samson E Anichi and Gideon O AbuSamson E Anichi and Gideon O Abu
Biodeterioration/biocorrosion of concrete pipeline coating material by sulphate reducing bacteria (SRB) and Iron oxidizing bacteria was tested in the laboratory. The sulphate reducing bacteria and the Iron oxidizing bacteria were isolated from water samples collected from a swamp at a depth of 30 cm. The water samples had a viable, culturable, heterotrophic bacterial count of 1.2 x 10 3 cfu/ml for the sulfate reducing bacteria (SRB) and 4.0 x 10 3 cfu/ml for the Iron oxidizing bacteria. A loop-full of discrete colonies of the isolates of the two groups were used to initiate the biodeterioration tests. The pH of the set ups with the SRB showed a change in acidity from 8.24 in the fresh medium to 6.79 after 7 days and moved down to 5.23 in 28 days of incubation. In contrast, the pH of the set ups with Iron oxidizing bacteria showed an increase in alkalinity. The pH of the fresh Winograd.. View More»
DOI: 10.4172/2157-7463.1000114