Extraction and Separation of Se, Zr, Pd, and Cs Including Long-Lived Radionuclides

IF 0.6 4区工程技术 Q4 CHEMISTRY, MULTIDISCIPLINARY

Solvent Extraction Research and Development, Japan Pub Date : 2017-01-01 DOI:10.15261/SERDJ.24.113

Y. Sasaki, Keisuke Morita, Shin'ichi Suzuki, H. Shiwaku, Ito Keisuke, Takahashi Yuya, M. Kaneko

引用次数: 4

Abstract

The solvent extraction of Se(IV), Zr(IV), Pd(II), and Cs(I) from nitric acid into 1-octanol (OC), or 1-octanol and n -dodecane has been performed. These elements include long-lived radionuclides in spent nuclear fuels, so a simple separation method is indispensable for the development of the treatment of high-level liquid radioactive waste. It was found that Se can be extracted using phenylenediamine, Zr(IV) can be extracted using tetraoctyl diglycolamide and di-2-ethylhexyl phosphoric acid, and Pd can be extracted using (methylimino)bis( N , N -dioctylacetamide) and N , N , N ’, N ’, N ”, N ”-hexaoctylnitrilotriacetamide. These elements can be recovered in over 90% yield by these extractants from nitric acid into OC. A distribution ratio of Cs(I) of greater than 1 can be obtained using di-t-butyldibenzo-18-crown-6. It is clear that 90% recovery of Cs(I) can be achieved using an extraction solvent with ten times the volume of the aqueous phase.

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含长寿命放射性核素的Se, Zr, Pd, Cs的萃取与分离

用溶剂法从硝酸中萃取Se(IV)、Zr(IV)、Pd(II)和Cs(I)，得到1-辛醇(OC)或1-辛醇和正十二烷。这些元素包括乏核燃料中的长寿命放射性核素，因此一种简单的分离方法对于发展高放射性液体废物的处理是必不可少的。结果表明，硒可以用苯二胺提取，Zr(IV)可以用四辛基二甘醇酰胺和二-2-乙基己基磷酸提取，Pd可以用(甲基)二(N, N -二辛基乙酰胺)和N, N, N '， N '， N '， N '， N ' -六辛基硝基三乙酰胺提取。用这些萃取剂从硝酸中提取这些元素，回收率超过90%。使用二叔丁基二苯并-18-冠-6可以得到Cs(I)的分布比大于1。很明显，使用十倍于水相体积的萃取溶剂，Cs(I)的回收率可以达到90%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solvent Extraction Research and Development, Japan 工程技术-工程：化工

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

1 months

期刊介绍： Solvent Extraction Research and Development, Japan (Solvent Extr. Res. Dev., Jpn.) is a periodical issued from Japan Association of Solvent Extraction (JASE) containing papers dealing with all aspects of solvent extraction and their related methods, underlying principles, and materials. Original articles, notes, technical reports, and critical reviews will be considered for publication. Original articles must be of reasonably broad scope and significance to the solvent extraction. Notes will originally describe novel work of a limited nature or especially significant work in progress. Authors can contribute some information of novel techniques, equipment or apparatus, reagents and diluents for solvent extraction as technical reports. Critical reviews will be received from the authors to whom the editorial committee asked to contribute.