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The Effect of Diluents on Extraction of Actinides and Lanthanides

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Abstract

A screening experiment was carried out where the organic phase consisted of different concentrations of 2,6-bis-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-benzo[1,2,4]triazy-3-yl)-[2,2’]bipyridinyl (CyMe4-BTBP) [1], which is the extracting molecule, dissolved in different diluents. The aqueous phase consisted of 0.01 M HNO3 and was spiked with trace amounts of 241Am and 152Eu acting as analogues for actinides and lanthanides. The ionic strength was kept constant at 1.0 M using NaNO3. Three of the selected diluents used to dissolve CyMe4-BTBP were abandoned: n-hexane, TPH and TBB. Another extraction experiment screened out anisole, 1,1,2,2-tetrachloroethane and benzaldehyde.

A kinetic experiment was then performed. Three very different kinetic behaviors were observed in three different organic systems. For a proper understanding of the kinetic mechanism, further investigations are needed.

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Authors and Affiliations

  1. Nuclear Chemistry, Chalmers University of Technology, Kemivagen no. 4, 412 96, Gothenburg, Sweden

    Teodora Valeria Retegan, Christian Ekberg, Anna Fermvik & Gunnar Skarnemark

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  1. Teodora Valeria Retegan
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  2. Christian Ekberg
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  3. Anna Fermvik
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  4. Gunnar Skarnemark
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Retegan, T.V., Ekberg, C., Fermvik, A. et al. The Effect of Diluents on Extraction of Actinides and Lanthanides. MRS Online Proceedings Library 985, 1405 (2006). https://doi.org/10.1557/PROC-985-0985-NN14-05

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  • DOI: https://doi.org/10.1557/PROC-985-0985-NN14-05

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