Extraction of pentavalent neptunium with di-isodecyl phosphoric acid.
- 1 January 1987
- journal article
- Published by Taylor & Francis in Journal of Nuclear Science and Technology
- Vol. 24 (3) , 227-232
- https://doi.org/10.3327/jnst.24.227
Abstract
As a fundamental study for separating neptunium from high-level radioactive waste, the mechanism and the rate of extraction of pentavalent neptunium with DIDPA were investigated. From the analysis of oxidation state of neptunium in organic phase, it was proved that disproportionation reaction of Np(V) was concerned in the extraction. The reaction order of the extraction with respect to neptunium concentration was larger than unity. The extraction rate was much reduced by the decrease of DIDPA concentration. The dependence of the rate on nitric acid concentration and on the temperature was also examined.Keywords
This publication has 0 references indexed in Scilit: