Decolorization of a textile dye, reactive red 198 (rr198), by Aspergillus parasiticus fungal biosorbent

The decolorization potential of textile dye Reactive Red 198 (RR198) by Aspergillus parasiticus fungal biosorbent has been investigated as a function of initial pH, contact time, biosorbent and initial dye concentration in a batch system. Maximum dye biosorption capacity 1.03x10-4 mol g-1 was observed at pH 2.0 and 2.0 g L-1 of biosorbent concentration. Biosorption equilibrium was attained within 50 min. The equilibrium data followed Langmuir, Freundlich and Dubinin-Radushkevich isotherm models at 20, 30, 40 and 50ºC. Anincrease in the biosorption capacity of A. parasiticus with temperature s...