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Microbial process for the decolorization of textile effluent containing azo, diazo and reactive dyes

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Singh - Nee Nigam, Poonam, Banat, IM, Singh, D and Marchant, R (1996) Microbial process for the decolorization of textile effluent containing azo, diazo and reactive dyes. PROCESS BIOCHEMISTRY, 31 (5). pp. 435-442. [Journal article]

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Abstract

A simple and practical biological process for the decolorization of coloured effluent from a textile company is described. A number of aerobic and anaerobic cultures able to decolorize dyes in textile effluent samples were isolated after prolonged enrichment culture from textile dyes-effluent samples. The decolorization of some component dyes of the effluent and of a mixture of dyes was achieved under anaerobic conditions, indicating that the bacteria were able to break the chromophoric bonds in the dye molecules. Several bacterial cultures capable of total decolorization of some effluent component dyes under anaerobic liquid fermentation conditions were isolated. One of the cultures decolorized Cibacron Red (reactive dye), Remazol Golden Yellow (azo dye) and Remazol Red (diazo dye) completely within 24-30 h fermentation process; Remazol Navy Blue (diazo dye) and Cibacron Orange (reactive dye) within 48 h; and Remazol Blue within 54 h. These decolorizations were permanent with no colour change upon exposure to ail: Only one dye, Remazol Turquoise Blue (a phthalocynaine dye), was partially reversibly decolorized. Potential applications of the cultures obtained in textile dye stuff effluent decolorization and treatment are discussed.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Infection and Immunity/Microbiology
Biomedical Sciences Research Institute > Pharmaceutical Science and Practice
ID Code:5556
Deposited By:Dr Poonam Singh - Nee Nigam
Deposited On:21 Dec 2009 11:31
Last Modified:16 May 2012 14:12

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