| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 232248 | The Journal of Supercritical Fluids | 2007 | 4 Pages |
Abstract
It was found that commercial refrigerant HFC-134a (1,1,1,2-tetrafluoroethane) dissolves 19 ± 2 and 25 ± 2 vol.% TBP at 1.2 MPa and 25 °C and at 2.8 MPa and 80 °C, respectively. The TBP solutions in HFC-134a effectively extract nitric acid; the [HNO3]:[TBP] molar ratio changes from 1.5:1 to 2.3:1. Experimental data showed that the recovery of uranium from uranyl nitrate in a single operation using TBP solutions in CO2 is about 80%, whereas in the case of TBP solutions in HFC-134a the recovery degree of uranium in a single operation reaches 95–98%. Effective dissolution of UO2 can be performed using the solution of TBP–nitric acid adduct in HFC-134a.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
A. Shadrin, V. Kamachev, A. Murzin, D. Shafikov,