Effect of sorbent concentration on Pb(II) sorption on Mg-Al-EDTA layered double hydroxides

被引：0
|
作者：
Wang, X. T. [1 ]
Zhao, L. X. [2 ]
Li, L. [1 ]
Chen, Q. F. [2 ]
Li, Q. [2 ]
Zhang, J. [2 ]
机构：
[1] Huadian Elect Power Res Inst, Shandong Branch, Jinan, Shandong, Peoples R China
[2] Shandong Acad Sci, Anal & Test Ctr, Jinan 250014, Shandong, Peoples R China
来源：
BULGARIAN CHEMICAL COMMUNICATIONS | 2017年 / 49卷
基金：
中国国家自然科学基金;
关键词：
Pb(II); LDH; Sorbent concentration effect; Surface component activity model; AQUEOUS-SOLUTIONS; ADSORPTION; ISOTHERM; SYSTEMS; HYDROTALCITE; EQUILIBRIUM; REMOVAL; SOLIDS; BATCH; ION;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The sorption of Pb(II) on a Mg-Al-EDTA layered double hydroxide (LDH) sample was investigated at different sorbent concentrations and the sorbent concentration effect (C-s-effect) was observed. The sorption isotherm and kinetic process at a given C-s value can be adequately described by the classic Freundlich model and a pseudo-second-order kinetic equation. However, the classic Freundlich model cannot describe the C-s-effect observed in the studied sorption system. We believe that the C-s-effect can be attributed to the deviation of the real sorption system from an ideal one. It was confirmed that the surface component activity (SCA) model can adequately describe the C-s-effect observed in sorption experiments.
引用
收藏
页码：238 / 241
页数：4
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