Behavior of Actinium, Alkaline, and Rare Earth Elements in Sr-Resin/Mineral Acid Systems

In this work, the interactions between the divalent alkaline earth elements (AEE) (Sr, Ba, Ra), the trivalent rare earth elements (REE) (Ce-Lu, Y), and Ac(III) with Sr-resin were investigated in the presence of HNO 3 , HCl, HBr, HClO 4 , and HPF 6 . Distribution coefficients of these ions on the Sr-...

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Bibliographic Details
Published in:Solvent extraction and ion exchange 2015-07, Vol.33 (5), p.496-509
Main Authors: Filosofov, Dmitry V., Lebedev, Nikolai A., Radchenko, Valery, Rakhimov, Alimardon V., Happel, Steffen, Roesch, Frank
Format: Article
Language:English
Subjects:
actinium
alkaline earth elements
extraction
ion exchange
rare earth elements
Sr-resin
super acid
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Summary:In this work, the interactions between the divalent alkaline earth elements (AEE) (Sr, Ba, Ra), the trivalent rare earth elements (REE) (Ce-Lu, Y), and Ac(III) with Sr-resin were investigated in the presence of HNO 3 , HCl, HBr, HClO 4 , and HPF 6 . Distribution coefficients of these ions on the Sr-resin were determined under batch-loading conditions. Lastly, online column separations were performed to demonstrate the utility of these systems. Substantial differences in the behavior of the ions in solutions comprised of the five different acids were observed. These differences can partly be explained by a combination of ion exchange (primary) and extraction (solvation) mechanisms. From a practical point of view, the Sr-resin/HClO 4 or Sr-resin/HPF 6 systems were demonstrated to be effective for the separation and purification of the different groups of the elements.
ISSN:0736-6299
1532-2262
DOI:10.1080/07366299.2015.1046293