期刊
SEPARATION SCIENCE AND TECHNOLOGY
卷 38, 期 14, 页码 3459-3472出版社
MARCEL DEKKER INC
DOI: 10.1081/SS-120023411
关键词
palladium; ruthenium; anion exchangers; platinum group metals; radioactive liquid waste
Radioactive high-level liquid wastes contain significant quantities of platinum group metals (PGM), such as palladium [Pd(II)], rhodium [Rh(III)], and ruthenium [Ru(III)]. The PGM are produced as fission products in nuclear reactors. In this study, batch and column experiments were carried out to investigate the ion exchange characteristics of Pd(II) and Ru(III), including the effects of the ionic group of ion exchangers, solution temperature, and the concentration of nitric acid by various anion exchangers such as IRN 78 and Dowex 1x8. The elution characteristics of Pd(II) and Ru(III) by various eluents were also investigated. The rate of ion exchange of Pd(II) and Ru(III) by an anion exchanger was very rapid and reached an equilibrium state within 1 hour. Anion exchangers such as Dowex 1x8 with the ionic group of quaternary methyl ammonium had a higher capacity than anion exchanger, such as IRN 78 with amine group, for the adsorption of Pd(II) and Ru(III). Pd(II) could be easily eluted by 0.5 M thiourea solution and 0.1-M nitric acid mixed solution. Ru(III) was effectively eluted by a 6-M HCl solution.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据