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Decontamination of radioruthenium from TRUEX Solvent

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Published/Copyright: November 2, 2011
Radiochimica Acta
From the journal Volume 100 Issue 1

Abstract

A procedure has been developed for the decontamination of radioruthenium from the lean organic phase composed of a solution 0.2 M n-octyl(phenyl)-N,N-diisobutylcarbamoylmethylyphosphineoxide (CMPO) and 1.2 M tri-n-butylphosphate (TBP) in n-dodecane (n-DD), which was used for the partitioning of minor actinides from actual high active waste solution (155 GWd/Te). For this purpose, the stripping behavior of radioruthenium from 0.2 M CMPO–1.2 M TBP in n-DD was studied at 298 K by using various aqueous reagents and adsorbents. Among the different reagents investigated, the aqueous solution of sodium hydroxide and sodium carbonate and adsorbents such as neutral alumina and anion exchange resin (OH- form) were identified as the promising candidates. Nearly 90–95% of radioruthenium was removed from the lean organic phase in seven contacts using sodium carbonate or sodium hydroxide solution. The residual radioactivity in the organic phase was removed by treatment with neutral alumina or anion exchange resin. The quality of the organic phase was ascertained by 241Am(III) retention test.

Keywords: Radioruthenium; Decontamination; Extraction; Adsorption; Octyl(phenyl)-N,N-diisobutylcarbamoylmethyl-phosphine oxide
* Correspondence address: Indira Gandhi Centre for Atomic Research, Fuel Chemistry Division, 603102 Kalpakam, Indien
Published Online: 2011-11-02
Published in Print: 2012-01

© by Oldenbourg Wissenschaftsverlag, Kalpakam, Germany

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https://doi.org/10.1524/ract.2012.1894
Keywords for this article
Radioruthenium; Decontamination; Extraction; Adsorption; Octyl(phenyl)-N,N-diisobutylcarbamoylmethyl-phosphine oxide

Articles in the same Issue

  1. Editorial
  2. Historical Item
  3. Investigation of direct production of 68Ga with low energy multiparticle accelerator
  4. Potentiometric and spectrophotometric characterization of the UO22+-citrate complexes in aqueous solution, at different concentrations, ionic strengths and supporting electrolytes
  5. Decontamination of radioruthenium from TRUEX Solvent
  6. Studies on hydrolytic and radiolytic stability of N,N,N´,N´-tetra-(2-ethylhexyl) thiodiglycolamide T(2EH)TDGA
  7. Concentrations of 210Po in fish and shellfish from southern region of Japan and evaluation of 210Po intake from seafood for Japanese people
  8. Neutron activation analysis and atomic absorption spectrophotometry for the analysis of fresh, pasteurised and powder milk
  9. Is extraction of Fe from iron based reference materials an appropriate method for determination of trace elements?
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