MAULIN P. SHAH, KAVITA A. PATEL, SUNU S. NAIR AND A.M. DARJI
Abstract
Textile effluent and sludge produced by effluent treatment plant is rich source of dye decolorizing bacterial population. Total 39 isolates were selected on the basis of their Gram reaction, colony characteristics, and cell morphology. Samples contain both the types of organisms, Gm +ve and Gm âve with dominated Gm +ve species. Initially, all 39 isolates were tested for their ability to decolorize two azo dyes, Reactive Black 5 and Green B. Then, six potential isolates were selected on the basis of their dye decolorizing ability and further tested with FF sky Blue, Black E, Black BT and Reactive Orange M2R. Differences in structures and complexity of the dye led to variable percentage of decolorization of different dyes by the same organism.