A kinetic study of chlorobenzene adsorption onto powder activated carbon from liquid solution

Abstract:

To understand the property of chlorobenzene adsorption on powder activated carbon(PAC),an analysis of physical characteristics and pore size distributions(PSD) was conducted for the four types of PAC which were used in the kinetic study of chlorobenzene adsorption from liquid solution.It was concluded that all the four types of PAC had a wild pore size distribution,and the adsorption capability increased with the increasing of BET surface area and pore volume.The rate of chlorobenzene adsorption onto PAC was so fast that the adsorption capability at 5 minutes was more than 80 percent of that of adsorption equilibrium achieved at about 30 minutes.The experimental adsorption data showed good correlation with pseudo-second-order kinetics equation and pseudo-third-order kinetics equation which had a satisfied description for the process of chlorobenzene adsorption within 2 h and more than 2 h,respectively.