Behavior of Actinium,Alkaline, and Rare Earth Elements in Sr-Resin/Mineral Acid Systems |
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| Authors: | Dmitry V. Filosofov Nikolai A. Lebedev Alimardon V. Rakhimov Steffen Happel Frank Roesch |
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| Affiliation: | 1. Dzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, Dubna, Russian Federation;2. Institute of Nuclear Physics of Uzbek Academy of Sciences, Tashkent, Republic of Uzbekistan;3. Triskem International, Parc de Lormandiére, Campus de Ker Lann, Bruz, France;4. Institute of Nuclear Chemistry, Johannes Gutenberg-University Mainz, Mainz, Germany |
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| Abstract: | 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 HNO3, HCl, HBr, HClO4, and HPF6. 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/HClO4 or Sr-resin/HPF6 systems were demonstrated to be effective for the separation and purification of the different groups of the elements. |
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| Keywords: | alkaline earth elements rare earth elements actinium Sr-resin super acid extraction ion exchange |
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