Removal of Pb(II) ions from aqueous solutions by litchi pericarp and its leachate

被引：0
作者：
Yi-min Pan
Rui-xue Jiang
Ji-li Yang
Hao Zheng
Er-qin Yin
机构：
[1] Hohai University,Environmental Science and Engineering College
[2] Shandong Agricultural University,Water Conservancy and Civil Engineering College
来源：
Journal of Central South University | 2016年 / 23卷
关键词：
litchi pericarp; Pb(II); adsorption; kinetics; isotherms; leachate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The adsorption capacity of Pb(II) on litchi pericarps was investigated as a function of temperature, pH, and adsorbent dose using batch experiments. The experimental data obtained were evaluated using adsorption equilibrium isotherms and a kinetic model. Additionally, the removal of Pb(II) in leachate of litchi pericarps was also evaluated. The results show that litchi pericarps exhibit a high adsorption capacity to Pb(II), with the maximum removal efficiency occurring at a temperature of 25 °C, a pH of 6.0−7.0 and an adsorbent dosage of 10 g/L. Langmuir and Freundlich isotherms and the pseudo-second-order kinetic model can all fit the equilibrium adsorption satisfactorily, with correlation coefficients (R2) of 0.9935, 0.9918 and 1.0, respectively. An average removal efficiency of 66.65% is found for Pb(II) in leachate of litchi pericarps.
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页码：1626 / 1632
页数：6
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