New approach for third phase investigation in solvent extraction system

• Autorzy: Borkowski M.
• Języki publikacji: EN

Abstrakty

EN

The phenomenon of third phase formation in different liquid extraction systems is well known for more than 50 years but until now a good mathematical model that could predict the third phase formation has not been developed. The third phase is unwanted in extraction systems because, for example, in nuclear fuel reprocessing it can cause criticality problems. However, the third phase may be a useful tool in other technologies. In this paper a new approach to third phase investigation is proposed. This new approach eliminates the aqueous phase, simplifies the system and gives new insight in the nature the third phase. It is a step forward in understanding of the mechanism governing the formation of third phase. This new approach could quickly provide sufficient data to develop a comprehensive model.

Słowa kluczowe

EN

third phase; TBP; nitric acid; dodecane; solvent extraction

• Wydawca: Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences, Bydgoszcz
• Czasopismo: Ars Separatoria Acta
• Rocznik: 2008
• Tom: No. 6
• Strony: 31--40
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Borkowski M.

• Los Alamos National Laboratory, Carlsbad Operations, NM 88220, USA,

Bibliografia

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• [14] Ferraro J.R., Borkowski M., Chiarizia R., McAlister D.R., 2001. FT-IR Spectroscopy of Nitric Acid in TBP/Octane Solution. Solvent Extr. Ion Exch. 19(6), 981-992.
• [15] Borkowski M., Ferraro J.R., Chiarizia R., McAlister D.R., 2002. FT-IR Study of Third Phase Formation in the U(VI) or Th(IV)/HNO3, TBP/Alkane Systems, Solvent Extr. Ion Exch. 20(3), 313-330.
• [16] Chiarizia R., Jensen M.P., Borkowski M., Ferraro J.R., Thiyagarajan P., Littrell K.C., 2003. Study of Third Phase Formation in TBP Solvent Extraction System. Solvent Extr. Ion Exch. 21(1), 1-27.
• [17] Borkowski M., Chiarizia R., Jensen M.P., Ferraro J.R., Thiyagarajan P., Littrel K.C., 2003. Third Phase Formation Revisited: The U(VI),HNO3/TBP-n-Octane System, Separation Science & Technology 38(12-23), 3333-3351.
• [18] Chiarizia R., Jensen M.P., Borkowski M., Ferraro J.R., Thiyagarajan P., Littrel K.C., 2003. SANS Study of Third Phase Formation in the U(VI)-HNO3-TBP-n-Dodecane System, Separation Science & Technology 38(12-23), 3313-3331.
• [19] Chiarizia R., Jensen M.P., Rickert P.G., Kolarik Z., Borkowski M., Thiyagarajan P., 2004. Extraction of Zirconium Nitrate by TBP in n-Octane: Influence of Cation Type on Third Phase Formation According to the “Sticky Spheres” Model. Langmuir 20, 10798--10808.
• [20] Chiarizia R., Jensen M.P, Borkowski M., Thiyagarajan P., Littrell K.C., 2004. Interpretation of third phase in the Th(IV)-HNO3/TBP-n-octane system with Baxter’s “Sticky Spheres” Model. Solvent Extr. Ion Exch. 22(3), 325-351.
• [21] Jensen M.P., Chiarizia R., Ferraro J.R., Borkowski M., Nash K.L., Thiyagarajan P., Littrel K.C., 2002. New Insights in third Phase Formation in the U(VI)-HNO3/TBPAlkane System, Proceedings of ISEC 2002, Cape Town, South Africa. K.C. Sole, P.M. Cole, J.S. Preston, D.J. Robinson (Eds.), South African Institute of Mining and Metallurgy, Marshalltown, RSA. 1137-1142.
• [22] Chiarizia R., Thiyagarajan P., Jensen M.P., Borkowski M., Littrel K.C., 2003. Study of Third Phase Formation in TBP Solvent Extraction System as a Result of Interaction Between Reverse Micelles. Proceedings of Intern. Symposium on Hydrometalurgy, Vancouver, Canada, 917-928.