alexa Enhanced decolorization and biodegradation of textile azo dye Scarlet R by using developed microbial consortium-GR.
Environmental Sciences

Environmental Sciences

Journal of Petroleum & Environmental Biotechnology

Author(s): Saratale RG, Saratale GD, Kalyani DC, Chang JS, Govindwar SP

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Abstract A developed consortium-GR, consisting of Proteus vulgaris NCIM-2027 (PV) and Micrococcus glutamicus NCIM-2168 (MG), completely decolorized an azo dye Scarlet R under static anoxic condition with an average decolorization rate of 16,666 microg h(-1); which is much faster than that of the pure cultures (PV, 3571 microg h(-1); MG, 2500 microg h(-1)). Consortium-GR gave best decolorization performance with nearly complete mineralization of Scarlet R (over 90\% TOC and COD reduction) within 3h, much shorter relative to the individual strains. Induction in the riboflavin reductase and NADH-DCIP reductase was observed in the consortium, suggesting the involvement of these enzymes during the fast decolorization process. The FTIR and GC-MS analysis showed that 1,4-benzenediamine was formed during decolorization/degradation of Scarlet R by consortium-GR. Phytotoxicity studies revealed no toxicity of the biodegraded products of Scarlet R by consortium-GR. In addition, consortium-GR applied for mixture of industrial dyes showed 88\% decolorization under static condition with significant reduction in TOC (62\%) and COD (68\%) within 72 h, suggesting potential application of this microbial consortium in bioremediation of dye-containing wastewater. This article was published in Bioresour Technol and referenced in Journal of Petroleum & Environmental Biotechnology

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