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篇目详细内容

【篇名】 Preparation of a novel anion exchange group modified hyper-crosslinked resin for the effective adsorption of both tetracycline and humic acid
【刊名】 Frontiers of Environmental Science and Engineering in China
【刊名缩写】 Front.Environ.Sci.Engin.China
【ISSN】 2095-2201
【EISSN】 2095-221X
【DOI】 10.1007/s11783-013-0483-6
【出版社】 Higher Education Press and Springer-Verlag Berlin Heidelberg
【出版年】 2013
【卷期】 7 卷3期
【页码】 412-419 页,共 8 页
【作者】 Qing ZHOU; Mengqiao WANG; Aimin LI; Chendong SHUANG; Mancheng ZHANG; Xiaohan LIU; Liuyan WU;
【关键词】 high surface area; adsorption; anion exchange; micropollutant; dissolved organic matters

【摘要】
A novel hyper-crosslinked resin (MENQ) modified with an anion exchange group was prepared using divinylbenzene (DVB) and methyl acrylate (MA) as comonomers via four steps: suspension polymerization, post-crosslinking, ammonolysis and alkylation reactions. The obtained resin had both a high specific surface area (793.34?m2·g?1) and a large exchange capacity (strong base anion exchange capacity, SEC: 0.74?mmol·g?1, weak base anion exchange capacity, WEC: 0.45?mmol·g?1). XAD-4 was selected as an adsorbent for comparison to investigate the adsorption behavior of tetracycline (TC) and humic acid (HA) onto the adsorbents. The results revealed that MENQ could effectively remove both TC and HA. The adsorption capacity of XAD-4 for TC was similar to that of MENQ, but XAD-4 exhibited poor performance for the adsorption of HA. The adsorption isotherms of TC and HA were well-fitted with the Freundlich model, which indicated the existence of heterogeneous adsorption through cation-π bonding and π–π interactions. The optimal solution condition for the adsorption of TC was at a pH of 5–6, whereas the adsorption of HA was enhanced with increasing pH of the solution.
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