Volume No. 9 Issue No.: 1 Page No.: 138-143 July-September 2014

 

CHROMATE DETOXIFICATION USING A SOIL MICROBIAL MIXED CULTURE GROWING ON TANNIN

 

Bhattacharya Aditi* and Sahasrabudhe Madhuri

Department of Microbiology, Dr. Rafiq Zakaria Campus, Maulana Azad College of Arts, Science and Commerce, Aurangabad, Maharashtra (INDIA)

 

Received on : December 05, 2013

 

ABSTRACT

 

Toxic metal species are generated from industrial activities and fossil fuel usage and are in the end accumulated through the food chain, leading to serious ecological and health problems. Hexavalent chromium (Cr (VI)) has many industrial applications and often causes environmental contamination in sea and fresh water sediments. There are different mechanisms of chromate detoxification demonstrated by microorganisms. A variety of organic compounds have been examined for their effects on chromate reduction and their utilization as carbon and energy source for chromate reduction. This study focuses on the enrichment of a primary microbial consortium obtained from soil and water, propagated in green tea extract from which subsequent enrichments have been used for chromate detoxification at 10, 50, 100 ėg/ml dichromate with and without a carbon source. The uptake has been studied in stationary and shake flasks. The determination of residual tannin, cell density, chromate stoichiometry, time duration and optimum parameters for chromate reduction has been checked in this study.

 

Keywords : Chromate, Detoxification, Microbial activities, Consortium, Biofilms, Tannin, Chromium pollution

 

 

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