Adsorptive Removal of Basic Violet Dye from Aqueous Solution by Activated Carbon Prepared From Tea Dust Material

Abstract

In the present investigation, the activated carbon was prepared from tea dust material and utilized for the removal of Basic violet-14 from aqueous solution.The experimental studies were carried out in a batch mode by varying the parameters such as initial dye concentration, adsorbent dose, temperature and pH.The experimental data were analyzed by both kinetic and isotherm models.Pseudo second order kinetics was well fitted than first order kinetics with the rate constants in the range of 1.286X10 -4 to 1.653X10 -4 gmg -1 min -1 .Maximum dye removal was observed at pH=3.05.Thermodynamic parameters calculated for the adsorption of Basic Violet-14 and observed that the adsorption was spontaneous and endothermic with negative G 0 ranges from -1.75 to -5.03 KJ/mol and the positive H 0 value ranges from 20-26 KJ/mol.Hence the prepared TWAC was an alternate to commercial activated carbon and also effective for the removal of BV-14 from aqueous solution.