Equilibrium adsorption and kinetics study of chitosan-dust kenaffiber composite

Kenaf-dust filled chitosan biocomposite was prepared for the adsorption of metal ion. The adsorption property of the biocomposite towards Cu2+ ion was evaluated. Various factors affecting the uptake behavior such as contact time, pH and initial concentration of the metal ion was investigated. The equilibrium data were analysed using Langmuir and Freundlich isotherm models. The adsorption kinetics followed the mechanism of the pseudo-second order and the intra particle diffusion was studied. The maximum adsorption capacity of the adsorbent for Cu2+ was in the range of 232±134 mg·g-1.