Effects of Diluents on the Separation of Minor Actinides from Lanthanides with Tetradodecyl-1,10-phenanthroline-2,9-diamide from Nitric Acid Medium

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Abstract

<p>To investigate the effective separation of actinides (Ans) from lanthanides (Lns), single-stage batch extraction experiments were performed with a novel extractant, tetradodecyl-1,10-phenanthroline-2,9-diamide (TDdPTDA) with various diluents such as 3-nitrobenzotrifluoride (F-3), nitrobenzene, and <i>n</i>-dodecane for Am, Cm, and Lns. The extraction kinetics with TDdPTDA was rapid enough to perform continuous extraction experiments using mixer-settler extractors. The slopes of the distribution ratio <i>versus</i> the TDdPTDA concentration and the distribution ratio <i>versus</i> the nitric acid concentration were similar for F-3 and nitrobenzene systems, but different from the <i>n</i>-dodecane system. These differences were attributed to the characteristics of the diluents. This study revealed high distribution ratios of Am (<i>D</i><sub>Am</sub>) and Cm (<i>D</i><sub>Cm</sub>) for TDdPTDA, with the high separation factors (<i>SF</i>s) of Am from Lns enough for their separation.</p>

Journal

  • Analytical Sciences

    Analytical Sciences 36(2), 241-246, 2020

    The Japan Society for Analytical Chemistry

Codes

  • NII Article ID (NAID)
    130007796079
  • NII NACSIS-CAT ID (NCID)
    AA10500785
  • Text Lang
    ENG
  • ISSN
    0910-6340
  • NDL Article ID
    030249693
  • NDL Call No.
    Z54-F482
  • Data Source
    NDL  J-STAGE 
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