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Journal of Radioanalytical and Nuclear Chemistry

, Volume 283, Issue 2, pp 417–420 | Cite as

Kinetics and mechanism of stripping of Pu(IV) by N,N-dimethylhydroxylamine using a Lewis cell

  • Chen Zuo
  • Taihong Yan
  • Weifang Zheng
  • Chuanbo Li
  • Xiaorong Wang
Article

Abstract

The kinetics of back-extraction of Pu(IV) from 30% Tri-Butyl-Phosphate/Odourless Kerosene (TBP/OK) into a nitric acid solution containing N,N-dimethylhydroxylamine (DMHAN) have been investigated using a Lewis cell. The different parameters affecting the back-extraction rate of Pu(IV) such as plutonium, nitric acid, DMHAN concentration in addition to temperature, stirring speed were separately studied and a rate equation was deduced. The activation energy of this process is 28.4 kJ/mol.

Keywords

Kinetics Plutonium(IV) Dimethylhydroxylamine Stripping Lewis cell 

References

  1. 1.
    Denniss IS, Jeapes AP (1996) Reprocessing irradiated fuel. In: Wilson P (ed) The nuclear fuel cycle: from ore to waste. Oxford Science Publications, OxfordGoogle Scholar
  2. 2.
    Choppin GR, Liljenzin JO, Rydberg J (1995) Radiochemistry and nuclear chemistry, 2nd edn. Butterworth-Heinemann Ltd, OxfordGoogle Scholar
  3. 3.
    Ren FY, Zhou ZX (2006) Foreign nuclear fuel reprocessing. Atomic Energy Press, Beijing, p 117Google Scholar
  4. 4.
    Koltunov VS, Marchenko VI (1998) Stabilization of Pu and Np valences in purex process: problems and outlook. The 5th international nuclear conference on recycling, conditioning and disposal held at Nice, France, The French Nuclear Society and the European Nuclear Society, pp 425–431Google Scholar
  5. 5.
    Ye G-A (2004) Review on the study and application of organic salt-free reagent in purex process. At Energy Sci Technol 38(2):152–158Google Scholar
  6. 6.
    Koltunov SM, Koltunov VS, Tikhonov MF (1993) Reaction kinetics of Np and Pu ions with hydroxylamine derivatives IV. Reaction of Pu(IV) with N,N-dimetylhydroxylamine. Radiokhimiya 35(4):63–70Google Scholar
  7. 7.
    Koltunov VS, Taylor RJ, Baravnov SM et al (1999) The reduction of plutonium and neptunium ions by N,N-dimetylhy(hydroxyethyl)droxylamine in nitric acid. Radiochim Acta 86:115–121Google Scholar
  8. 8.
    Rogers MA (1955) Aliphatic hydroxylamines. Part I. Preparation. J Am Chem Soc 77:769–772Google Scholar
  9. 9.
    Wallwork AL, Denniss IS, Taylor RJ (1999) Modelling of advanced flowsheets using data from miniature contactor trials: chemical process engineering in the nuclear industry. Nucl Energy 38(11):31–35Google Scholar
  10. 10.
    Lim TM, Levins DM, Wiblin WA, Tran T (1996) Proceedings of the International Solvent Extraction Conference (ISEC’96), March 19–23, Melbourne, Australia 1, p 445Google Scholar
  11. 11.
    El-Dessouky SI, Daoud JA, Aly FH (1999) Mechanism of the synergistic extraction of octahedral Co(II) from nitrate medium by 8-hydroxyquinoline-DB18C6 chloroform mixture. Radiochim Acta 85:79–82Google Scholar
  12. 12.
    Teruo M, Kozo G (1986) Mass transfer coefficients of uranium and plutonium across aqueous/organic interfaces of solvent extraction. J Nucl Sci Tech 23(6):529–539CrossRefGoogle Scholar
  13. 13.
    Danesi PR, Chiarizia R, Coleman CF (1980) The kinetics of metal solvent extraction. Crit Rev Anal Chem 10:1Google Scholar
  14. 14.
    Pushlenkov MF, Tikhomov NS, Shchepetil’nikov NN (1974) Reduction of Plutonium by means of bivalent iron. 3. CMEA symposium on investigations in the field of spent fuel reprocessing. Marianske Lazne, Czechoslovakia, 24–26 AprilGoogle Scholar
  15. 15.
    Pushlenkov MF, Tikhomov NS, Shchepetil’nikov NN (1977) Kinetics of reductive reextraction of plutonium in two-phase system using various reagents. 4. CMEA symposium on investigations in the field of spent fuel reprocessing. Marianske Lazne, Czechoslovakia, March 28–April 1Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  1. 1.Department of RadiochemistryChina Institute of Atomic EnergyBeijingPeople’s Republic of China

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