Removal of Cu2+ from Aqueous Solution by Alkaline-activated Konjac Glucomannan
A raw adsorbent of konjac glucomannan was activated at strong alkaline condition. A comprehensive adsorption study of Cu2+ removal from aqueous solution by adsorption was conducted regarding the effects of initial pH, adsorbent dosage, time, temperature and Cu2+ initial concentration. The adsorption data were applied to Langmuir and Freundlich models and their contents were calculated. Thermodynamic parameter enthalpy change ( △ Ho) showed that physisorption played an important role in Cu2+-loaded alkaline-activated konjac glucomannan system. Experimental data were also analysed in terms of kinetic characteristics and it was found that adsorption followed well pseudo-second-order kinetics. The results obtained showed that the new adsorbent had good efficiency for the removal of Cu2+.
Alkaline-activated konjac glucomannan Cu2+ Isotherms Thermodynamics Kinetics
Xuegang LUO Feng LIU Xiaoyan Lin
Department of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang,Sichuan,621010,China
国际会议
重庆
英文
9-13
2008-06-09（万方平台首次上网日期，不代表论文的发表时间）