Chelating adsorbent for heavy metal ions prepared by loading anion-exchange resin with thiacalix[4] arenetetrasulfonate

被引：23

作者：

Matsumiya, H ^{[1
]}

Masai, H ^{[1
]}

Terazono, Y ^{[1
]}

Iki, N ^{[1
]}

Miyano, S ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Biomol Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2003年 / 76卷 / 01期

关键词：

D O I：

10.1246/bcsj.76.133

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A chelating adsorbent for heavy metal ions has been prepared by loading an anion-exchange resin with thiacalix[4]arenetetrasulfonate (TCAS). Batchwise extraction studies have revealed a high adsorption ability of the TCAS-loaded resin toward heavy metal ions with high selectivity. The present resin strongly retained the heavy metal ions tested here [CO(II), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II), and Pb(II)] in a slightly acidic to neutral pH region, while no adsorption was observed for alkaline earth metal ions, Mg(II) and Ca(II), in this pH region. These adsorption characteristics of the present resin should be ascribed to the contribution of the bridging sulfur of the loaded WAS to selectively coordinate to metal ions categorized to be soft to intermediate Lewis acids by the Hard and Soft Acids and Bases (HSAB) rule. A continuous column adsorption system with the present resin allowed the selective and almost quantitative (more than 99.98%) removal of heavy metal ions.

引用

页码：133 / 136

页数：4

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