Biodecolorization of AZO dye by microbial isolates from soil

The dye decolourizing isolates, Klebsiella pneumonia, Pseudomonas florescence, Proteus mirabilis, Alcaligens sp, Serratia marscens and E.coli from garden soil. The present study confirms the ability of all isolates for decolourization of pink and orange dye used in textile. The isolates showed 91.14 % percentage decolourization for pink colour dye and 93.6 % for orange colour dye under optimum conditions. Among all the isolates, Proteus sp for Pink dye and Pseudomonas sp for orange dye were found to be most efficient in decolourization. All parameters studied in this paper were found to be effective for all isolates. The results reported here warrant further investigation to establish the usefulness of these isolates for bioremediation and biodegradation application such as waste water treatment. High decolourization extent and facile conditions show the potential for this bacterial strain to be used in the biological treatment of dyeing mill effluents.