Advertisement

Journal of Radioanalytical and Nuclear Chemistry

, Volume 143, Issue 2, pp 323–328 | Cite as

Actinide and lanthanide extraction from nitric acid solutions by flotation

  • E H. A. Mezhov
  • A. V. Samatov
  • L. V. Troyanovsky
Solution Chemistry

Abstract

Flotation of thorium, plutonium (IV), uranium(VI) and gadolinium from aqueous nitric acid solutions (HNO3 concentration from 0.01 to 5.0M) was investigated using lauryl phosphoric acid (LPA) as a SAS-collector. It is established that the extent of removal of the metal ions increases with the amount of LPA introduced, regardless of the solution acidity. At a fixed mole LPA to metal ratio the extent of uranium(VI) and gadolinium removal is reduced with increasing acidity, while in case of plutonium(IV) and thorium this parameter remains constant. It is shown that in principle ∼100% extraction of plutonium(IV) and thorium by flotation is possible regardless of the acidity of aqueous solutions. Ca(NO3)2 added to the system in the amount of 0.5M does not significantly affect the flotation extraction of thorium.

Keywords

Aqueous Solution Uranium Acidity Nitric Acid Acid Solution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    F. SEBBA, Nature, 184 (1959) 1062.Google Scholar
  2. 2.
    F. SEBBA, Ion Flotation, Elsevier Publ. Co., Amsterdam, 1962.Google Scholar
  3. 3.
    S. F. KUZ'KIN, A. M. GOL'MAN, Flotatsiya ionov i molekul, Nedra, Moscow, 1971.Google Scholar
  4. 4.
    A. M. GOL'MAN, Ionnaya flotatsiya. Nedra, Moscow, 1982.Google Scholar
  5. 5.
    V. V. PUSHKAREV, A. F. NIKIFOROV, Sorbtsiya rarionuklidov solyami geteropolikislot. Ehnergoatomizdat, Moscow, 1982.Google Scholar
  6. 6.
    L. D. SKRYLEV, V. V. MENCHUK, V. F. SAZONOVA, I. M. MINAEV, Izv. VUZ, Tsvet. Met., No. 2 (1981) 66.Google Scholar
  7. 7.
    L. D. SKRYLEV, S. N. PAVLENKO, V. F. SAZONOVA, Izv. VUZ, Tsvet. Met., No. 2 (1983) 71.Google Scholar
  8. 8.
    French Patent N 2574002, 1986.Google Scholar
  9. 9.
    USA Patent N 4656012, 1987.Google Scholar
  10. 10.
    EH. A. MEZHOV, A. V. SAMATOV, L. V. TROYANOVSKY, Certificate of authorship 1472449 (SSSR). Otkrytiya. Izobreteniya No. 14 (1989) 108.Google Scholar
  11. 11.
    B. V. MARTYNOV, Ekstraktsiya organicheskimi kislotami i ikh solyami. Spravochnik po ekstraktsii. Vol. 3. Atomizdat, Moscow, 1978.Google Scholar
  12. 12.
    A. I. MOSKVIN, Koordinatsionnaya khimiya aktinoidov, Atomizdat, Moscow, 1975.Google Scholar
  13. 13.
    L. P. SOKHINA, L. V. GONCHARUK, A. S. SOLOVKIN, Radiokhimiya, 23 (1981) 82.Google Scholar
  14. 14.
    P. G. KRUTIKOV, A. S. SOLOVKIN, Zh. Neorg. Khim. 15 (1970) 1610.Google Scholar

Copyright information

© Akadémiai Kiadó 1990

Authors and Affiliations

  • E H. A. Mezhov
    • 1
  • A. V. Samatov
    • 1
  • L. V. Troyanovsky
    • 1
  1. 1.AUSRI of Inorganic MaterialsMoscowUSSR

Personalised recommendations