A batch decolorization and kinetic study of Reactive Black 5 by a bacterial strain Enterobacter sp. GY-1

► We isolated a strain capable of decolorizing anthraquinone and azo dyes. ► We examined effects of environment parameters on kinetics of RB 5 decolorization. ► Extracellular enzymes were responsible for RB 5 decolorization. ► A kinetic model was established for RB 5 decolorization.