Novel Silica-Based Hybrid Adsorbents: Copper(II) Adsorption Isotherms and Thermodynamics

被引：1

作者：

Hu, Keyan ^{[1
]}

Liu, Junsheng ^{[1
]}

Chen, Xinghua ^{[1
]}

Xu, Min ^{[1
]}

Wang, Kechun ^{[1
]}

机构：

[1] Hefei Univ, Dept Chem & Mat Engn, Key Lab Membrane Mat & Proc, Hefei 230601, Peoples R China

来源：

ASIAN JOURNAL OF CHEMISTRY | 2014年 / 26卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Hybrid membrane; Adsorption; Isotherms; Thermodynamics; Copper(II) removal; AQUEOUS-SOLUTION; REMOVAL; EQUILIBRIUM; KINETICS; METALS; ACID;

D O I：

10.14233/ajchem.2014.15971

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, copper(II) adsorption isotherms and thermodynamic data have been investigated using a hybrid membrane as an adsorbent. It is found that copper(II) adsorption on sample D followed the Freundlich isotherm model. Moreover, it is found that the adsorption capacity of copper(II) on sample D increases with an increase in solution temperature and the Delta G values are changed from positive to negative as the temperature increased, suggesting that copper(II) adsorption is an endothermic and spontaneous in nature as the solution temperature was elevated to higher level. In addition, based on intraparticle diffusion, it is confirmed that copper(II) adsorption is not governed by intraparticle diffusion and diffusion-controlled adsorption mechanism might be the major control process. This finding is meaningful in the removal of copper(II) from aqueous solution using hybrid membrane as an adsorbent.

引用

页码：3845 / 3848

页数：4

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