Heavy metal separation with polymer inclusion membranes

被引：92

作者：

Sgarlata, Carmelo ^{[1
]}

Arena, Giuseppe ^{[1
]}

Longo, Elisa ^{[1
]}

Zhang, Dongmei ^{[2
]}

Yang, Yangfei ^{[2
]}

Bartsch, Richard A. ^{[2
]}

机构：

[1] Univ Catania, Dipartimento Sci Chim, I-95125 Catania, Italy

[2] Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA

来源：

JOURNAL OF MEMBRANE SCIENCE | 2008年 / 323卷 / 02期

关键词：

selective transport; calixarenes; species distribution; heavy metals;

D O I：

10.1016/j.memsci.2008.07.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Using functionalized calix[4]arene carrier 1 in a PIM system, Hg(II) is transported with high selectivity from acidic aqueous source phase solutions of Cd(II), Hg(II) and Pb(II) with high NaNO3 concentration into aqueous receiving solutions containing EDTA. To gain insight into this transport selectivity, complexation studies of the three heavy metal perchlorate species by ligand 1 were conducted in acetonitrile. Although 1:1 complexation of the divalent heavy metal cation by 1 was observed for Cd(II), the stoichiometries were more complicated for Hg(II) and Pb(II). Selective Hg(II) transport across the PIM is attributed to both the strength and stoichiometry of the metal ion-carrier species forming at the source phase-membrane interphase and its stripping from the membrane into the receiving phase by EDTA. (c) 2008 Elsevier B.V. All rights reserved.

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页码：444 / 451

页数：8

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