| 光谱学与光谱分析 |
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| Synthesis of Maleic Anhydride-Acrylamide Copolymer and Study of Its Adsorption Properties by ICP-AES |
| CAI Qing, XIE Zhi-hai*, JIANG Xiao-yan, LIU Yu，YAN Hong-tao |
| Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710069, China |
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Abstract A novel adsorbent was prepared with maleic anhydride and acrylamide as functional monomer, N,N-methylenebisacrylamide as cross-linking agent, and ammonium persulfate as initiator through aqueous polymerization reaction. The adsorbent was characterized by Fourier transmission infrared spectra (FTIR) and Thermogravimetry (TG). The adsorption properties and selectivity properties were investigated by inductively coupled plasma atomic emission spectrum (ICP-AES). The result indicated that the optimum acidity was pH 3.5 and the reaction attained equilibrium at 1 h under stirring. The polymer adsorbent exhibited high selectivity for Fe3+ and its saturated adsorption capacity was 78.81 mg·g-1. The adsorption kinetics was well described by pseudo-second kinetic equation, and the adsorption of the copolymer for Fe3+ accorded with Freundlich isothermal model. The adsorption process was found to be endothermic.
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Received: 2011-12-09
Accepted: 2012-02-28
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Corresponding Authors:
XIE Zhi-hai
E-mail: xiezhihai8@163.com
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