Back to Search
Start Over
Extraction kinetics of Uranium(VI) and Thorium(IV) with Tri-iso-amyl phosphate from nitric acid using a Lewis Cell.
- Source :
- Journal of Radioanalytical & Nuclear Chemistry; Dec2014, Vol. 302 Issue 3, p1069-1076, 8p
- Publication Year :
- 2014
-
Abstract
- The extraction kinetics of uranium(VI) and thorium(IV) with Tri-iso-amyl phosphate (TiAP) from nitric acid medium has been investigated using a Lewis Cell. Especially, dependences of the extraction rate on stirring speed, temperature, interfacial area were firstly measured to elucidate the extraction kinetics regimes. The experimental results demonstrated that extraction kinetic of U(VI) is governed by chemical reactions at interface with an activation energy, E, of 43.41 kJ/mol, while the rate of Th(IV) extraction is proved to be intermediate controlled, of which the E is 23.20 kJ/mol. Reaction orders with respect to the influencing parameters of the extraction rate are determined, and the rate equations of U(VI) and Th(IV) at 293 K have been proposed as respectively. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02365731
- Volume :
- 302
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Radioanalytical & Nuclear Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 100302946
- Full Text :
- https://doi.org/10.1007/s10967-014-3447-9