Effective removal of heavy metals from aqueous solutions by orange peel xanthate

被引：74
|
作者：
Liang Sha [1 ]
Guo Xue-yi [1 ]
Feng Ning-chuan [2 ]
Tian Qing-hua [1 ]
机构：
[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Hunan, Peoples R China
[2] Ningxia Med Coll, Sch Basic Med Sci, Yinchuan 750004, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2010年 / 20卷
基金：
中国国家自然科学基金;
关键词：
orange peel xanthate; adsorption; heavy metals; ADSORPTION; CADMIUM; WASTE; ADSORBENTS; PECTIN; NICKEL; HUSK;
D O I：
10.1016/S1003-6326(10)60037-4
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
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.
引用
收藏
页码：S187 / S191
页数：5
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