Modelling of the Extraction of Uranium with Supercritical Carbon Dioxide

A model is presented for the analysis of the results of extraction of uranium in a flow system by supercritical fluid modified with tributylphosphate from a nitric acid matrix, in which the extraction is not limited by the solubility of the uranium species. The model used is that of diffusion out of...

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Veröffentlicht in:	Journal of nuclear science and technology 2001-06, Vol.38 (6), p.433-438
Hauptverfasser:	CLIFFORD, Anthony A., ZHU, Shuang, SMART, Neil G., LIN, Yuehe, WAI, Chien M., YOSHIDA, Zenko, MEGURO, Yoshihiro, ISO, Shuichi
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences carbon dioxide clean technology Energy Exact sciences and technology extraction Fuels Nuclear fuels Preparation and processing of nuclear fuels processing supercritical fluid TBP uranium waste minimisation
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Beschreibung
Zusammenfassung:	A model is presented for the analysis of the results of extraction of uranium in a flow system by supercritical fluid modified with tributylphosphate from a nitric acid matrix, in which the extraction is not limited by the solubility of the uranium species. The model used is that of diffusion out of a sphere into a medium in which the extracted uranium is infinitely dilute. Although not a completely accurate representation of the liquid-supercritical fluid system, the model is shown to be a reasonable representation and some conclusions discussed.
ISSN:	0022-3131 1881-1248
DOI:	10.1080/18811248.2001.9715050