Cu2+ REMOVAL FROM AQUEOUS SOLUTION USING SIDA CORDIFOLIA STEM ACTIVATED CARBON BY BATCH TECHNIQUE

Abstract

The importance on the removal of Cu2+ from the aqueous solution using activated Sida cordifolia carbon is narrated elaborately in the present study. The parameters studied included contact time, adsorbent dose, initial pH and other ionic effects. Freundlich and Langmuir isotherm models were applied to the equilibrium experimental data. The maximum adsorption capacity (qm) obtained from the Langmuir isotherm linear plots were 62.548, at an initial pH of 6.8 at 30˚C. Thermodynamic data indicated that the process was endothermic, spontaneous and feasible. The adsorption followed pseudo second order reaction equation and the rate is mainly controlled by intra-particle diffusion. As a result, ASCC could be an important low-cost adsorbent for removal of Cu2+from aqueous solution.