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Bioremediation of Hexavalent Chromium (VI) and Oil and Grease from Petroleum Refining Industrial Effluents by Using Bacillus Subtilis

Sheela B1 and Elizabeth K M2
1. Department of microbiology, Hindustan College of arts and science, University of Madras, Tamil Nadu
2. Department of microbiology, Gitam University, Visakhapatnam, Andhra Pradesh
Abstract—Rapid industrialization in the developing countries increases the problem of environmental pollution by improper discharge of industrial effluents. In this present study bioremediation of hexavalent chromium and oil and grease from petroleum refining industries were carried out. Using Bacillus subtilis species 1 and 2 for the removal of hexavalent chromium and oil and grease from the industrial waters were achieved and percentage removal of hexavalent chromium in untreated and treated was 100% and 99.8% and 100 and 99.1%. For oil and grease was 98.7 and 99.1% and 98.4 and 99.5%. These results revealed that bacillus subtilis was a suitable organism for hexavalent chromium removal. 

Index Terms—petroleum refining waters, physico-chemical parameters, bacillus subtilis, bioremediation, hexavalent chromium, oil and grease

Cite: Sheela B and Elizabeth K M, "Bioremediation of Hexavalent Chromium (VI) and Oil and Grease from Petroleum Refining Industrial Effluents by Using Bacillus Subtilis ," International Journal of Life Sciences Biotechnology and Pharma Research, Vol. 2, No. 3, pp. 352-357, July 2013.

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