Removal of Cu2+ from the aqueous solution by tartrate-intercalated layered double hydroxide

被引：29

作者：

Shen, Yanming ^{[1
]}

Zhao, Xiaolei ^{[1
]}

Zhang, Xi ^{[1
]}

Li, Shifeng ^{[1
]}

Liu, Dongbin ^{[1
]}

Fan, Lihui ^{[1
]}

机构：

[1] Shenyang Univ Chem Technol, Dept Chem Engn, Shenyang 110142, Liaoning, Peoples R China

来源：

DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 05期

关键词：

Layered double hydroxide; Hydrotalcite; Adsorption; Heavy metal ion; Regeneration; HEAVY-METAL IONS; ADSORPTION; ACID; EQUILIBRIUM; CITRATE; CU(II); MALATE; PB(II); COPPER; EDTA;

D O I：

10.1080/19443994.2014.981866

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The tartrate-intercalated MgAl layered double hydroxide (MgAl-TA LDH) was prepared by ion-exchange method at the acid solution using MgAl-CO3 LDH as the precursor. The adsorption of Cu2+ on MgAl-TA LDH was studied and some influence factors such as contact time, initial Cu2+ concentration, adsorbent dosage, solution pH, and adsorption temperature were investigated. Three kinds of adsorption isotherms (Langmuir model, Freundlich model, and Redlich-Peterson model) were investigated; the results indicated that equilibrium was well described by Langmuir isotherm, predicting the adsorption of Cu2+ on MgAl-TA adsorbents was a monolayer adsorption. The equilibrium kinetic adsorption data were fitted to the pseudo-second order kinetic equation. Furthermore, the adsorption of Cu2+ was controlled mainly by chemical process combined with intra-particle diffusion. Parameters of adsorption thermodynamic suggested that the interaction of Cu2+ adsorbed by MgAl-TA LDH adsorbents was spontaneous and endothermic.

引用

页码：2064 / 2072

页数：9

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