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首页> 外文期刊>Journal of Hazardous Materials >Novel chelating resin with cyanoguanidine group: Useful recyclable materials for Hg(II) removal in aqueous environment
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Novel chelating resin with cyanoguanidine group: Useful recyclable materials for Hg(II) removal in aqueous environment

机译：具有氰基胍基团的新型螯合树脂：在水性环境中用于去除Hg（II）的有用的可回收材料

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摘要

A novel chelating resin containing cyanoguanidine moiety has been successfully prepared by the function-alizing reaction of a macroporous bead based on chloromethylated copolymer of styrene-divinylbenzene (CMPS) with dicyandiamide (DCDA) in the presence of phase transfer catalyst. The Fourier transform-infrared spectra (FT-IR) and scanning electron microscopy (SEM) were employed in the characterization of the resulting chelating resin, meanwhile, the adsorption properties of the resin for Hg(II) were investigated by batch and column methods. The results indicated that the resin displayed a marked advantage in Hg(ll) binding capacity, and the saturated adsorption capacity estimated from the Langmuir model was dramatically up to 1077 mg g~(-1) at 45°C Furthermore, it was found that the resin was able to selectively separate Hg(II) from multicomponent solutions with Zn(II), Cu(ll), Pb(ll) and Mg(ll). The desorption process of Hg(U) was tested with different eluents and the ratio of the highest recovery reached to 96% under eluting condition of 1 M HC1 + 10% thiourea. Consequently, the resulting chelating resin would provide a potential application for treatment process of Hg(II) containing wastewater.
机译：通过在相转移催化剂的存在下，基于苯乙烯-二乙烯基苯（CMPS）与双氰胺（DCDA）的氯甲基化共聚物的大孔珠的官能化反应，已经成功地制备了包含氰基胍部分的新型螯合树脂。用傅里叶变换红外光谱（FT-IR）和扫描电子显微镜（SEM）表征了所得到的螯合树脂，同时，采用分批法和柱法研究了该树脂对汞（II）的吸附性能。结果表明，该树脂在Hg（II）的结合能力上显示出明显的优势，根据Langmuir模型估算的饱和吸附能力在45°C时高达1077 mg g〜（-1）。该树脂能够从具有Zn（II），Cu（II），Pb（II）和Mg（II）的多组分溶液中选择性分离Hg（II）。使用不同的洗脱液测试了Hg（U）的解吸过程，在1 M HCl + 10％硫脲的洗脱条件下，最高回收率达到96％。因此，所得的螯合树脂将为含汞（II）废水的处理过程提供潜在的应用。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2011年第3期|p.1348-1354|共7页
  • 作者

    Xiaojie Ma; Yanfeng Li; Zhengfang Ye; Liuqing Yang; Lincheng Zhou; Liyuan Wang;

  • 作者单位

    State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering &Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering &Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    Department of Environmental Engineering Institute of Environmental Sciences & Technology, Peking University, Beijing 100871, PR China;

    State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering &Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering &Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

    State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, College of Resources and Environment, Institute of Biochemical Engineering &Environmental Technology, Lanzhou University, Lanzhou 730000, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Dicyandiamide; Chelating resin; Selective sorption; Desorption; Mercury pollution;

    机译：双氰胺;螯合树脂;选择性吸附;解吸汞污染;

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