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Research Journal of Microbiology
Year: 2007  |  Volume: 2  |  Issue: 2  |  Page No.: 133 - 140

Aerobic Chromate Reducing Bacillus cereus Isolated from the Heavy Metal Contaminated Ennore Creek Sediment, North of Chennai, Tamil Nadu, South East India

S. Kamala Kannan, K.J. Lee, R. Krishnamoorthy, A. Purusothaman, K. Shanthi and N. Rajeshwara Rao    

Abstract: Ennore creek sediments are often severely polluted with the heavy metal chromium. Several chromium-resistant bacteria were isolated and identified from the sediments and all the isolates exhibited multi-metal resistance. Chromate reduction assay showed that the isolated Bacillus cereus ECD strains were able to reduce chromate up to 76.1% at a concentration of 100 μg mL-1. Growth of the Bacillus species in the presence of increasing concentration of chromate was also determined. Since the Bacillus cereus ECD strain has high resistance to chromate and other metals and also reduces chromate under aerobic conditions, this bacterium might be potentially applicable for the treatment of metal- based industrial effluents.

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