EXTRACTION BEHAVIOUR OF TECHNETIUM AND ACTINIDES IN THE ALIQUAT-336/NITRIC ACID SYSTEM
作者:
A. Landgren,
J-O Liljenzin,
期刊:
Solvent Extraction and Ion Exchange
(Taylor Available online 1999)
卷期:
Volume 17,
issue 6
页码: 1387-1401
ISSN:0736-6299
年代: 1999
DOI:10.1080/07366299908934654
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The extraction behaviour of technetium, thorium, uranium, neptunium, plutonium, americium and curium in the Aliquat-336 (diluted with 1,3-diisopropyl benzene) - nitric acid system have been studied. Aliquat-336 (tricapryl-methyl ammonium nitrate) is a quaternary ammonium salt extracting different species with an anion exchange mechanism. Distribution data obtained are modeled by anion exchange (technetium) and ion-pair formation mechanisms (actinides) with the extraction of nitric acid included to account for the lowering of the free extractant concentration. Reasonably high distribution ratios were obtained for technetium and the tetravalent elements (Th, Np and Pu) and Aliquat-336 can therefore be useful for partitioning of these elements.
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