Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
Original Papers
Extraction of Uranium from Simulated Ore by the Supercritical Carbon Dioxide Fluid Extraction Method with Nitric Acid-TBP Complex
Le Thi Kim DUNGTomoki IMAIOsamu TOMIOKAMikio NAKASHIMAKuniaki TAKAHASHIYoshihiro MEGURO
Author information
JOURNALS FREE ACCESS

2006 Volume 22 Issue 11 Pages 1425-1430

Details
Abstract

The supercritical fluid extraction (SFE) method using CO2 as a medium with an extractant of HNO3-tri-n-butyl phosphate (TBP) complex was applied to extract uranium from several uranyl phosphate compounds and simulated uranium ores. An extraction method consisting of a static extraction process and a dynamic one was established, and the effects of the experimental conditions, such as pressure, temperature, and extraction time, on the extraction of uranium were ascertained. It was found that uranium could be efficiently extracted from both the uranyl phosphates and simulated ores by the SFE method using CO2. It was thus demonstrated that the SFE method using CO2 is useful as a pretreatment method for the analysis of uranium in ores.

Information related to the author
© 2006 by The Japan Society for Analytical Chemistry
Previous article Next article
feedback
Top