Research Article Open Access

DECOLORIZATION OF OFFSET PRINTING INDUSTRY EFFLUENT IN A MIXED BED REACTOR USING A BACTERIAL CONSORTIUM

Abstract

A bacterial consortium consisting of two isolated strains (EPPI3 & DPPI2) was developed for the degradation of mixture of two dyes, Scarlet red and Magenta present in offset printing industry effluent at pH7 and an optimum temperature 30°C.The degradation efficiency of the consortium in different environmental conditions (pH, temperature, agitation, carbon and nitrogen sources) and different effluent concentration were studied. Further with all optimized conditions effluent was treated in Mixed Bed Reactor (MBR).The physicochemical analysis using standard methods as well as metals by Atomic Absorption Spectroscope and the analysis of degraded products by HPLC, LCMS were carried out. The given microbial treatment to the dyes observed in effluent of offset printing industry showed complete mineralization and only presence of some untraceable, negligible very low molecular weight compounds were found.

ARCHANA A. KULKARNI* AND R.S. AWASTHI

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