, Volume 47, Issue 4, pp 382–386 | Cite as

Extraction of Lanthanide(III) Nitrates from Aqueous Nitrate Solutions with Tri-n-butyl Phosphate in Hexane and Tetradecane (Two- and Three-Phase Systems)

  • A. K. Pyartman
  • V. A. Keskinov
  • A. V. Kudrova


Extraction of lanthanide(III) nitrates [La-Sm(III)] with 1.83 mol dm−3 tri-n-butyl phosphate (TBP) in hexane and tetradecane was studied at 298.15 K. The extraction with TBP in hexane proceeds in two-phase systems, and with TBP in tetradecane, in two- and three-phase systems. Extraction in multiphase systems was mathematically treated.


Phosphate Nitrate Hexane Nitrate Solution Tetradecane 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Pyartman, A.K., Kopyrin, A.A., Puzikov, E.A., and Bogatov, K.B., Radiokhimiya, 1995, vol. 37, no.1, pp. 52–55.Google Scholar
  2. 2.
    Nikolotova, Z.I., Ekstraktsiya neitral’nymi fosfororganicheskimi soedineniyami. Aktinoidy: Spravochnik (Extraction with Neutral Organophosphorus Compounds. Actinides: Handbook), Moscow: Energoatomizdat, 1987.Google Scholar
  3. 3.
    Pvribil, R., Analytical Applications of EDTA and Related Compounds, Oxford: Pergamon, 1972.Google Scholar
  4. 4.
    Mikhailov, V.A., Kharchenko, S.K., and Nazin, A.G., Izv. Sib. Otd. Akad. Nauk SSSR, 1961, no. 7, pp. 50–56.Google Scholar
  5. 5.
    Pyartman, A.K. and Kopyrin, A.A., Radiokhimiya, 1997, vol. 39, no.2, pp. 149–154.Google Scholar
  6. 6.
    Pyartman, A.K., Kudrova, A.V., and Keskinov, V.A., Zh. Prikl. Khim., 2004, vol. 77, no.1, pp. 166–167.Google Scholar
  7. 7.
    Pyartman, A.K., Puzikov, E.A., and Bogatov, K.B., Zh. Prikl. Khim., 1994, vol. 67, no.5, pp. 762–766.Google Scholar
  8. 8.
    Pyartman, A.K., Kopyrin, A.A., Keskinov, V.A., and Shuvalov, A.N., Matematicheskoe i termodinamicheskoe opisanie fazovykh ravnovesii v ekstraktsionnykh sistemakh, soderzhashchikh nitraty redkozemel’nykh metallov(III) i ittriya(III), nitrat natriya i tri-n-butilfosfat (Mathematical and Thermodynamic Description of Phase Equilibria in Extraction Systems Containing Rare-Earth Metal(III) and Yttrium(III) Nitrates, Sodium Nitrate, and Tri-n-butyl Phosphate), Available from VINITI RF, no. 3611-V98, December 9, 1998; Ref. Zh. Khim., 1999, no. 13, no. 17B362Dep.Google Scholar
  9. 9.
    Dennis, J.E. and Schnabel, R.B., Numerical Methods for Unconstrained Optimization and Nonlinear Equations, Englewood Cliffs, NJ: Prentice-Hall, 1983.Google Scholar

Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • A. K. Pyartman
    • 1
  • V. A. Keskinov
    • 1
  • A. V. Kudrova
    • 1
  1. 1.St. Petersburg State Technological InstituteTechnical UniversitySt. PetersburgRussia

Personalised recommendations