Adsorption of UO22+ by polyethylene adsorbents with amidoxime, carboxyl, and amidoxime/carboxyl group

被引：152

作者：

Choi, SH

Nho, YC ^{[1
]}

机构：

[1] Kyungpook Natl Univ, Taegu 702701, South Korea

[2] Korea Atom Energy Res Inst, Taejon 305600, South Korea

来源：

RADIATION PHYSICS AND CHEMISTRY | 2000年 / 57卷 / 02期

关键词：

adsorption of UO22+; polyethylene adsorbent; radiation-induced grafting; acrylonitrile; amidoxime group;

D O I：

10.1016/S0969-806X(99)00348-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The polyethylene (PE) adsorbents were prepared by a radiation-induced grafting of acrylonitrile (AN), acrylic acid (AA), and the mixture of AN/AA onto PE film, and by subsequent amidoximation of cyano groups of poly-AN graft chains. With an increase of AA composition in AN/AA monomer mixture, the water uptake of the grafted polyethylene film increased. In AN/AA mixture, the maximum adsorption of UO22+ was observed in the adsorbent with a ratio of AN/AA (50/50, mol%) in copolymer. The amidoxime, carboxyl, and amidoxime/carboxyl groups onto PE acted as a chelating site for the selected UO22+. The complex structure of polyethylene with three functional groups and UO22+ was confirmed by Fourier Transform Infrared (FTIR) spectroscopy. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：187 / 193

页数：7

共 10 条

[1] ADSORPTION OF URANIUM FROM AQUEOUS-SOLUTIONS USING ACTIVATED CARBON [J].