National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A developed bacterial consortium showed potential for decolourization of two simulated wastewaters containing 1:1 metal complex acid dyes namely, Acid blue 158 and Acid black 52, separately. Ability of decolourization was found up to 1300-1650 mg L-1 of cumulative dye concentration in a fed batch system along with faster decolourization rate in batch mode at 100 mg L-1 concentration. Chromium removal efficiency of consortium showed metal sorption on bacterial cells. Oxidoreductive enzymes that are laccase, lignin peroxidase, tyrosinase, azoreductase and NADH-DCIP reductase were involved in the degradation of dyes. UV-Vis spectra, HPLC and FTIR analysis confirmed the biodegradation of the dyes. H1NMR and GC-HRMS analysis supported the prediction of possible biodegraded metabolites produced, on the basis of which degradation pathways were proposed with possible degradation intermediates. Reduced phytotoxicity was observed after treatment for Cicer aeriatinum whereas S. bicolor showed induced growth. Similarly, reduced microbial toxicity was observed (15-37%) for S. aureus and P. aeruginosa, both.
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