Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 66, Issue 1, Pages 118-124Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2008.11.019
Keywords
Mixer-settler; Counter-current extraction; TODGA; Actinide partitioning
Categories
Ask authors/readers for more resources
A mixture of N,N,N',N'-tetraoctyl diglycolamide (TODGA) and N,N-dihexyl octanamide (DHOA) dissolved in NPH has been evaluated for actinide partitioning from simulated high-level waste by cold tests in mixer-settler runs. The feed solution was a synthetic purex raffinate of pressurized heavy water reactor (PHWR) origin where lanthanides were taken as stand-in for trivalent actinides. Quantitative extraction (forward and backward) of trivalent lanthanides was observed in four stages each. Elements such as Fe, Mn, Ni, Ba and Cs were practically un-extracted. However, Cr and Mo were partially co-extracted. Reusability of the organic phase in five successive cycles suggested excellent hydrolytic stability of the reagent. Though the solvent system was susceptible to radiolytic degradation, negligible effects on the extraction as well as on the stripping of lanthanides were observed with solvent irradiated to 100 KGy radiation dose. (C) 2008 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available