Removal of basic violet 3 dye from aqueous media using a steel industry residue as solid phase

The results show that this residue removes 90% of BV3 from aqueous media under optimized conditions: pH 4,75 and ionic strength at 0,170 mol L−1 by acetic acid/sodium acetate buffer solution, 70 mg of solid phase, 45 °C, stirring time of 175 min at 110 rpm and particle size of 250 mesh. Studies about the kinetic and thermodynamic characteristics of the adsorption process were also realized. The kinetic profile followed the pseudo-second order and Morris-Weber models. In terms of thermodynamics, data best fitted to Freundlich isotherm.