Effective removal of heavy metals from aqueous solutions by orange peel xanthate
来源期刊：中国有色金属学报(英文版)2010年增刊第1期
论文作者：梁莎 郭学益 冯宁川 田庆华
文章页码：187 - 191
Key words：orange peel xanthate; adsorption; heavy metals
Abstract: Preparation of orange peel xanthate and its adsorption behaviors of five heavy metals (Cu2+, Cd2+, Pb2+, Zn2+ and Ni2+) were studied. FTIR spectra, Zeta potentials and TG analysis were used to characterize prepared orange peel xanthate. Effects of various parameters including equilibrium pH, initial metal ion concentration and adsorption time on the adsorption processes for the five metal ions were investigated. It was found that for all five metal ions, the adsorption isotherms agreed Langmuir model very well and the maximum adsorption capacities of Cu2+, Cd2+, Pb2+, Zn2+ and Ni2+ were obtained as 77.60, 76.57, 218.34, 49.85 and 15.45 mg/g, respectively. All adsorption processes can attain equilibrium within 20 min and kinetics was well fitted by psesudo-second order equation. It is proposed that the adsorption mechanism was complexation.
基金信息：the National Natural Science Foundation of China
