摘要

Activated carbon has been prepared from wood of Derris indica. Its adsorption capability in removal of cadmium from wastewater has been investigated through batch adsorption experiments. The adsorption kinetics of this carbon for various parameters like adsorbent dosage and contact time of the cadmium ion were studied. The cadmium adsorption behavior and the effect of the initial cadmium concentration on removal efficiency were also examined. The optimum dosage of wood of derris indica based activated carbon to remove 80 mg/L of cadmium from aqueous solution 0.5gms/150 mL and the optimum contact time was 20 minutes. The isotherm data confirm with both Langmuir and Freundlich isotherm models.