Modified diglycolamides for actinide separation: Solvent extraction and time-resolved laser fluorescence spectroscopy complexation studies

A. Wilden*, G. Modolo, S. Lange, F. Sadowski, B. B. Beele, A. Skerencak-Frech, P. J. Panak, A. Geist, M. Iqbal, W. Verboom, D. Bosbach

*Corresponding author for this work

Research output: Contribution to conferencePaperAcademicpeer-review

Abstract

In this work, the back-bone of the diglycolamide-structure of the TODGA extractant was modified by adding one or two methyl groups to the central methylene carbon-atoms. The influence of these structural modifications on the extraction behavior of trivalent actinides and lanthanides and other fission products was studied in solvent extraction experiments. The addition of methyl groups to the central methylene carbon atoms leads to reduced distribution ratios, also for Sr(II). This reduced extraction efficiency for Sr(II) is beneficial for process applications, as the co-extraction of Sr(II) can be avoided, resulting in an easier process design. The use of these modified diglycolamides in solvent extraction processes is discussed. Furthermore, the complexation of Cm(III) and Eu(III) to the ligands was studied using Time-Resolved-Laser-Fluorescence-Spectroscopy (TRLFS). The complexes were characterized by slope analysis and conditional stability constants were determined.

Original languageEnglish
Pages907-911
Number of pages5
Publication statusPublished - 1 Jan 2013
EventInternational Nuclear Fuel Cycle Conference, GLOBAL 2013: Nuclear Energy at a Crossroads - Salt Lake City, United States
Duration: 29 Sep 20133 Oct 2013

Conference

ConferenceInternational Nuclear Fuel Cycle Conference, GLOBAL 2013
Abbreviated titleGLOBAL 2013
CountryUnited States
CitySalt Lake City
Period29/09/133/10/13

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