Removal of chromium from aqueous solutions using Derris indica wood based activated carbon. Adsorption batch studies

Abstract

Adsorption efficiency in removal of chromium from waste water has been studied using Derris indica based activated carbon by conducting batch adsorption tests.Adsorption kinetics of chromium removal by Derris indica was examined by varying factors such as pH and concentration of synthetic solution and dosage of activated carbon.It has been found that the Derris indica based activated carbon is able to remove 80 mg/dm 3 of chromium from aqueous solution by dosage of 0.8 g/150 cm 3 with optimum contact time of 15 min.The isotherm data confirms with both Langmuir and Freundlich isotherm forms.