Decolorisation, biodegradation and detoxification of benzidine based azo dye |
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Authors: | Kumar Koel Saravana Devi S Krishnamurthi K Gampawar S Mishra Nilesh Pandya G H Chakrabarti T |
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Institution: | Environmental Biotechnology Division, National Environmental Engineering Research Institute (NEERI), Nagpur-440 020, India. |
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Abstract: | The present study deals with the decolorisation, biodegradation and detoxification of Direct Black-38, a benzidine based azo dye, by a mixed microbial culture isolated from an aerobic bioreactor treating textile wastewater. The studies revealed a biotransformation of Direct Black-38 into benzidine and 4-aminobiphenyl followed by complete decolorisation and biodegradation of these toxic intermediates. From cytotoxicity studies, it was concluded that detoxification of the dye took place after degradation of the toxic intermediates by the culture. |
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