Adsorption of zinc and copper (II) ions from aqueous solution using modified nano bentonite: equilibrium, kinetics, and thermodynamic studies

被引：5
|
作者：
Nasseri, Shahab [1 ,2 ,3 ]
Yakubov, Ali [2 ]
Alemi, Abdolali [3 ]
机构：
[1] Tech & Vocat Univ, Tech Coll Shahid Khodadadi Bandar Anzali, Guilan, Iran
[2] Tech & Vocat Univ TVU, Guilan Branch, Fac Shahid Khodadadi Anzali, Dept Engn, Guilan, Iran
[3] Univ Tabriz, Fac Chem, Dept Inorgan Chem, Tabriz, Iran
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2021年 / 56卷 / 16期
关键词：
Sewage; adsorption process; thermodynamic properties; endothermic; spontaneous; HEAVY-METAL IONS; WASTE-WATER; MONTMORILLONITE NANOPARTICLES; REMOVAL; ACID; ADSORBENT; DYES; OPTIMIZATION; MIXTURES; ALUMINUM;
D O I：
10.1080/01496395.2020.1846055
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this research, modified Nanobentonite was prepared by calcination of bentonite for adsorption of zinc and copper ions. Nanobentonite particles were characterized by the EDX method, FTIR, and SEM. Adsorption efficiency, thermodynamic properties, and initial concentrations were studied. FTIR result showed sodium chloride affects the bentonite structure. According to the results, the rate of Zn2+ adsorption at the chemical adsorption step is higher than the rate of adsorption of Cu2+. The amount of enthalpy and entropy are uniformly reduced when the Cu2+ and Zn2+ ions are adsorbed. The adsorption of Cu2+ ions is two-step and was occurring through an alternating ion-exchange mechanism.
引用
收藏
页码：2708 / 2720
页数：13
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