Skip to Main content Skip to Navigation
Journal articles

Experimental and modelling study of ruthenium extraction with tri-n-butylphosphate in the purex process

Abstract : Ruthenium extraction by tri-n-butylphosphate (TBP) from nitric acid was studied and modelled in the conditions of the PUREX process. Experimental distribution ratios obtained for water, nitric acid and ruthenium were described with a physicochemical model based on the application of the mass action law on each extraction equilibrium and by taking into account deviations from thermodynamic ideal behaviour both in aqueous and organic phase using Mikulin and Sergievskii-Dannus equations. The best agreement between experimental and calculated ruthenium extraction isotherms was obtained by considering the formation of two complexes TBP$_2$RuNO (NO$_3$)$_3$(H$_2$O)$_2$ and TBP$_3$RuNO (NO$_3$)$_3$(H$_2$O)$_2$ ̅̅in organic phase. This model was implemented in the CEA-AREVA PAREX process simulation code and used to simulate ruthenium behaviour in a counter-current PUREX hot test performed in mixer-settlers.
Complete list of metadatas

Cited literature [23 references]  Display  Hide  Download

https://hal-cea.archives-ouvertes.fr/cea-02388818
Contributor : Amplexor Amplexor <>
Submitted on : Monday, December 2, 2019 - 10:42:28 AM
Last modification on : Monday, May 11, 2020 - 3:16:04 PM
Long-term archiving on: : Tuesday, March 3, 2020 - 7:27:28 PM

File

201600001629.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

P. Moeyaert, M. Miguirditchian, M. Masson, B. Dinh, X. Heres, et al.. Experimental and modelling study of ruthenium extraction with tri-n-butylphosphate in the purex process. Chemical Engineering Science, Elsevier, 2017, 158, pp.580-586. ⟨10.1016/j.ces.2016.10.035⟩. ⟨cea-02388818⟩

Share

Metrics

Record views

59

Files downloads

211