Sorption studies of Cu(II) on gooseberry fruit (emblica officinalis) and its removal from electroplating wastewater

被引：56
作者：
Rao, Rifaqat Ali Khan [1 ]
Ikram, Shaista [1 ]
机构：
[1] Aligarh Muslim Univ, Fac Engn & Technol, Dept Appl Chem, Environm Res Lab, Aligarh 202002, Uttar Pradesh, India
来源：
DESALINATION | 2011年 / 277卷 / 1-3期
关键词：
Sorption; Cu(II); Equilibrium isotherms; Kinetics; Thermodynamics; AQUEOUS-SOLUTION; ADSORPTIVE REMOVAL; COPPER(II) IONS; NICKEL IONS; BIOSORPTION; EQUILIBRIUM; KINETICS; CADMIUM(II); CU2+; LEAD(II);
D O I：
10.1016/j.desal.2011.04.065
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The sorption of Cu(II) onto waste residue left after extraction of juice from Indian gooseberry (Amla) fruit (Emblica officinalis) was studied. Equilibrium isotherms, kinetic data and thermodynamic parameters have been evaluated. Equilibrium data agreed well with Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R) isotherm models. The kinetic data followed pseudo-second-order model and it was found that intra-particle diffusion was not the sole rate-controlling factor. Gibbs free energy showed spontaneous process for all interactions. The breakthrough and exhaustive capacities were found to be 4.0 and 24.0 mg/g respectively. Emblica officinalis was shown to be a promising sorbent for Cu(11) removal from aqueous solutions. The practical utility of the sorbent has been demonstrated by achieving 97.60% removal of Cu(II) from electroplating wastewater by column process. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：390 / 398
页数：9
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