Analysis of Powdered Activated Carbon Adsorption Process in Coping with Sudden Pollution of Chlorobenzene in Raw Water
LIN Ming-li,CUI Fu-yi,YIN Xiao-tao,ZHAO Zhi-wei,NIU Chang and WANG Yan
DOI:10.11835/j.issn.1674-4764.2011.05.022
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2011,Pages 132-136
- Abstract
Bench experiments were carried out to evaluate the removal of chlorobenzene in raw water by conventional water treatment process. And a batch system was applied to study the adsorption equilibrium and kinetics of chlorobenzene(CB)from raw water by powdered activated carbon(PAC). The experimental data obtained were mathematically modeled with Freundlich and pseudo-second-order kinetic model for the equilibrium isotherm and kinetics, respectively. It is shown that the conventional water treatment process can not remove chlorobenzene from water effectively. PAC can rapidly adsorb chlorobenzene with 80% and 98% of the equilibrium adsorption capacity at 5 min and 30 min, respectively. A theoretical formular was established to express the relation of PAC dose to the initial concentration of chlorobenzene and adsorption time, and it was verified by the results of bench experiments. The maximum concentration of chlorobenzene corresponding to different PAC dose was obtained with the adsorption time of 30 min.