A comparative study of adsorption of acid blue 9 and brilliant green from aqueous solution by activated carbon derived from coconut shell and palmyra fruit nut shell

Abstract

Synthetic dye stuffs are extensively used for textile dyeing and other industrial applications. The textile industries generate large volumes of waste water which contains toxic compounds. The disposal of these wastes into water bodies causes damage to the environment. These effluents require prior treatment before being discharged into the water bodies to prevent water pollution. The aim of this study is to investigate the adsorption of the textile dyes like Acid Blue 9 and Brilliant Green from aqueous solution over activated carbon prepared from coconut shell(CSC) and palmyra fruit nut shell(PFSC) at different reaction parameters. CSC has higher removal efficiency for these two dyes than PFSC. Adsorption data were fitted well with Freundlich isotherm and the kinetic data followed a pseudo-second order model in addition to intra-particle diffusion model ( with removal more than 99%) at all conditions.