Bacterial Tolerance and Reduction of Chromium (VI) by Bacillus cereus Isolate PGBw4
American Journal of Environmental Protection
Volume 5, Issue 2, April 2016, Pages: 35-38
Received: Mar. 17, 2016; Accepted: Mar. 28, 2016; Published: Apr. 13, 2016
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Authors
Ferdouse Zaman Tanu, Dept. of Soil and Environmental Sciences, University of Barisal, Barisal, Bangladesh
Azizul Hakim, Dept. of Soil Science, University of Chittagong, Chittagong, Bangladesh
Sirajul Hoque, Dept. of Soil, Water and Environment, University of Dhaka, Dhaka, Bangladesh
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Abstract
This study aimed to determine the bacterial tolerance to chromium (Cr6+) in three growth media, such as nutrient broth, Luria Bertani (LB) broth and mineral salt media in terms of Minimum Inhibitory Concentration (MICs). Among the seven metal resistant soil bacteria, Bacillus cereus isolate PGBw4 and Bacillus cereus strain ES-4a1showed highest tolerance against Cr6+ in all three media. Bacillus cereus isolate PGBw4 was used as an effective and environment friendly agent for detoxifying Cr(VI) and reduction study in this research. The bacterial isolate mitigated toxic effects of Cr(VI) more efficiently from 100mg/L to 500mg/L within 24 and 48 hours respectively. The maximum amount of reduction of Chromium (VI) was 70.67 percent at 100 of Cr(VI) mg/L concentration after 48 hours of incubation and the lowest was 42 percent at 500mg/L Chromium concentration after 24 hours of incubation.
Keywords
Chromium (VI), Bacillus cereus Isolate PGBw4, Tolerance, Reduction
To cite this article
Ferdouse Zaman Tanu, Azizul Hakim, Sirajul Hoque, Bacterial Tolerance and Reduction of Chromium (VI) by Bacillus cereus Isolate PGBw4, American Journal of Environmental Protection. Vol. 5, No. 2, 2016, pp. 35-38. doi: 10.11648/j.ajep.20160502.13
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Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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