Possibilities of concentrating 99Мо by extraction with solutions of aliphatic hydroxamic acids in alcohols

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• 作者：A. A. Naumov ; N. D. Goletskii ; B. Ya. Zilberman ; A. S. Kudinov…
• 刊名：Radiochemistry
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：58
• 期：4
• 页码：394-404
• 全文大小：315 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Nuclear Chemistry
  Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3288
• 卷排序：58

文摘

Equilibrium distribution of molybdenum, uranium, and certain fission products in extraction from nitric acid solutions with 0.2% solutions of hydroxamic acids in alcohols poorly soluble in water and the process kinetics were studied. Methods for the Mo stripping were examined. A small-size flowsheet allowing ~98% isolation of Mo in 6 h and its preconcentration by a factor of 15 with efficient separation from the main impurities (separation factors 500–10 000) was tested on an extraction rig with a model solution spiked with 99Mo and 125I. A batch procedure ensuring the 99Mo preconcentration by a factor of ~180 and separation from the impurities with the separation factor of 103–108 at a process time of 2 h was suggested and checked.Keywordsmolybdenum-99nitric acidextractionpurificationhydroxamic acidsn-alcohols