Reactive dyes containing diazo bonds are more resistant to anaerobic reduction in comparison to monoazo dyes. Reactive Yellow-145 (RY-145) which is used as a model dye is a diazo dye having -SO3H group in its structure. A novel bacterial consortium was isolated from the soil samples of a local dye manufacturing unit at Ahmedabad, Gujarat, India. This culture was used for decolorization parametric study of RY-145 under various operating conditions. The consortium was successfully able to decolorize, 300 mg l-1 of selected dye up to 97% within 11 h under static facultative conditions at pH 7.0...