Preparation of chelating polymer grafted magnetic adsorbent and its application for removal of Pb(II) ions

被引：4
|
作者：
Peng Hong [1 ]
Wang Shizhen [1 ]
Tang Jianxing [1 ]
Tong Guofu [1 ]
Huang Kaixun [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan 430074, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2011年 / 26卷 / 06期
关键词：
magnetic adsorbents; chelating polymer grafted; removal of; lead ions; HEAVY-METAL IONS; NANOPARTICLES; ADSORPTION; MICROSPHERES; WATER; RESIN; ACID;
D O I：
10.1007/s11595-011-0372-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel magnetic chelating adsorbent (CPMS) with iminodiacetate functionality was prepared by polymerization of glycidyl methacrylate-iminodiacetic acid (GMA-IDA) monomer with N, N-methylenebisacrylamide as crosslinker in the presence of monodisperse magnetic silica microspheres (MS). CPMS was characterized by IR, SEM, VSM and TGA. The experimental results revealed that MS was embedded in the gel polymer, but the morphology of CPMS was irregular. The saturation magnetization for CPMS was found to be 28.4 emu/g, and the percentage of GMA-IDA polymer grafted on MS was about 46.5%. CPMS were shown to be efficient for the removal of Pb(II) ions at pH 3.0-6.0, and the adsorption data obeyed the Langmuir equation with a maximum adsorption capacity of 54.4 mg center dot g(-1) at pH 5.0. Moreover, the adsorption rate of CPMS was fast and it took about 5 minutes to achieve adsorption equilibrium in aqueous solution of lower lead ions concentration.
引用
收藏
页码：1108 / 1113
页数：6
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