Kinetics of the rhodium desorption from the ion exchange resin with the thiourea functional groups by the thiourea solution

  • Alexander A. Blokhin professor, doctor of scienty, professor St.Petersburg State Institute of Technology (Technical University), St.Petersburg, Russia, e-mail: blokhin@list.ru
  • Olga V. Moloshneva student working on degree thesis, St.Petersburg State Institute of Technology (Technical University), St.Petersburg
  • Yury V. Murashkin associate professor, Ph.D, associate professor, St.Petersburg State Institute of Technology (Technical University), St.Petersburg
  • Svetlana N. Voronina student working on degree thesis, St.Petersburg State Institute of Technology (Technical University), St.Petersburg
Keywords: rhodium, desorption, kinetics, ion exchange resin, thiourea, solutions.

Abstract

The influence of the granules size, stirring intensity and temperature on the kinetics of the rhodium
desorption from the macroporous ion exchange resins Purolite S920 with the thiourea functional groups by
the thiourea solution has been investigated. It has been done conclusion, that the speed limiting stage of this
process was the chemical reaction of the formation of rhodium complexes with thiourea. The estimation of
values of effective activation energies of the process of the rhodium desorption and the chemical reaction of
formation of the rhodium complexes with thiourea in solutions (∼ 92 kJ/mol and ~ 95 kJ/mol accordingly)
has been given.

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Published
2019-11-26
How to Cite
Blokhin, A. A., Moloshneva, O. V., Murashkin, Y. V., & Voronina, S. N. (2019). Kinetics of the rhodium desorption from the ion exchange resin with the thiourea functional groups by the thiourea solution. Sorbtsionnye I Khromatograficheskie Protsessy, 11(4). Retrieved from https://journals.vsu.ru/sorpchrom/article/view/1949