Improvement in flow-sheet of extraction chromatography for trivalent minor actinides recovery

Sou Watanabe, Tatsuya Senzaki, Atsuhiro Shibata, Kazunori Nomura, Masayuki Takeuchi, Kiyoharu Nakatani, Haruaki Matsuura, Yusuke Horiuchi, Tsuyoshi Arai

Research output: Contribution to journalArticlepeer-review

Abstract

Extraction chromatography flow-sheet employing octyl(phenyl)-N,N-diisobutylcarbonoylmethylphosphine oxide and bis(2-ethylhexyl) hydrogen phosphate extractants for trivalent minor actinide recovery was modified to improve column separation performance. Excellent trivalent minor actinides recovery performance was obtained by column separation experiments on nitric acid solution containing the trivalent minor actinides and representative fission product elements, i.e. recovery yields > 93% with sufficient decontamination factors against the fission products. Those are the best performance which we have ever obtained by experiments inside hot cell.

Original languageEnglish
Pages (from-to)1273-1277
Number of pages5
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume322
Issue number3
DOIs
Publication statusPublished - 2019 Dec 1

Keywords

  • CMPO
  • Extraction chromatography
  • HDEHP
  • Reprocessing
  • Trivalent minor actinides

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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