Biosorption of Crystal Violet onto Aspergillus wentii From Aqueous Solution

Abstract

In this study Aspergillus wentii, a fungal biomass was utilized as a biosorbent for adsorption of crystal violet (a cationic dye) from aqueous solution. Biosorption experiments were performed as a function of various parameters, such as contact time, initial dye concentration, temperature, biosorbent dose and solution pH. Required time for maximum dye biosorption was 45 min. Biosorption was in consistent with Freundlich isotherm. It was seen that the amounts of the dye biosorbed onto Aspergillus wentii increased with increasing contact time, initial dye concentration, temperature, biosorbent dose and solution pH. Kinetic studies also showed that the bisorption process obeyed well the pseudo-second order kinetic model.