A promising absorbent of acrylic acid/poly(ethylene glycol) hydrogel prepared by glow-discharge electrolysis plasma

被引：16
|
作者：
Lu, Quanfang [1 ,2 ]
Yu, Jie [1 ]
Gao, Jinzhang [1 ]
Yang, Wu [1 ]
Li, Yan [1 ]
机构：
[1] NW Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China
[2] NW Normal Univ, Editorial Dept, Univ Journal, Lanzhou 730070, Peoples R China
来源：
CENTRAL EUROPEAN JOURNAL OF CHEMISTRY | 2012年 / 10卷 / 04期
关键词：
Hydrogel; Adsorption; Heavy-metal ions; Glow-discharge electrolysis plasma (GDEP); Poly(ethylene glycol) (PEG); HEAVY-METAL IONS; ADSORPTION PROPERTIES; CHELATING RESIN; ACID; REMOVAL; MECHANISMS; ADSORBENT; SORPTION; CD(II); CU(II);
D O I：
10.2478/s11532-012-0055-9
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An acrylic acid/poly(ethylene glycol) (AAc/PEG) hydrogel was synthesized in aqueous solution by a simple one-step method using glow-discharge electrolysis plasma (GDEP) technique. The structure of AAc/PEG hydrogel was characterized by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). Factors influencing the adsorption of heavy-metal ions such as solution pH, contact time, initial heavy-metal ion concentration were examined systematically by batch experiments. Results showed that both chemical complexation and ion exchange played an important role for heavy-metal ion adsorption onto AAc/PEG hydrogel. The adsorption isothermals followed the Langmuir isotherm and the adsorption kinetics fitted the pseudo-second-order model at 25A degrees C with a pH 6. In addition, AAc/PEG hydrogel can be also regenerated and re-used.
引用
收藏
页码：1349 / 1359
页数：11
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