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Solvent Optimization Studies for a New EURO-GANEX Process with 2,2’-Oxybis( N,N -di- n -decylpropanamide) (mTDDGA) and Its Radiolysis Products

Verlinden, Bart; Wilden, Andreas; Van Hecke, Karen ; J. M. Egberink, Richard; Huskens, Jurriaan; Verboom, Willem; Hupert, Michelle; Weßling, Patrik 1; Geist, Andreas ORCID iD icon 1; Panak, Petra J. 1; Hermans, Rainier; Verwerft, Marc; Modolo, Giuseppe; Binnemans, Koen; Cardinaels, Thomas
1 Institut für Nukleare Entsorgung (INE), Karlsruher Institut für Technologie (KIT)

Abstract:

The diglycolamide 2,2’-oxybis(N,N-di-n-decylpropanamide) (mTDDGA) is being studied as an extractant for actinides and lanthanides in the European Grouped Actinide Extraction (EURO-GANEX) process. The aim is the development of a more simplified process using a single extractant instead of a mixture of extractants used in the current EURO-GANEX process. This work presents solvent optimization studies of mTDDGA, with regards to the extraction characteristics of the different diastereomers of mTDGA and of mixed diastereomer solutions. Also radiolysis behavior has been studied by irradiation of solvent extraction systems in a gamma irradiation facility using $^{60}$Co. The availability of irradiated organic solutions made it possible to gain valuable insights into the plutonium loading capacity after gamma-irradiation of the solvent up to 445 kGy and to quantify degradation compounds. Solvent extraction characteristic of the major degradation compounds themselves were determined. Like other methylated diglycolamides, we found a remarkable difference in extraction of up to two orders of magnitude between the two diastereomers. High plutonium loading (36 g L$^{−1}$) is feasible using this single extractant, even after absorbing a dose of 445 kGy. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000151822
Veröffentlicht am 04.11.2022
Originalveröffentlichung
DOI: 10.1080/07366299.2022.2125151
Scopus
Zitationen: 5
Web of Science
Zitationen: 3
Dimensions
Zitationen: 5
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nukleare Entsorgung (INE)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 0736-6299, 1532-2262
KITopen-ID: 1000151822
HGF-Programm 32.11.03 (POF IV, LK 01) Fundamental Scientific Aspects
Erschienen in Solvent Extraction and Ion Exchange
Verlag Taylor and Francis
Band 41
Heft 1
Seiten 59-87
Vorab online veröffentlicht am 03.10.2022
Nachgewiesen in Web of Science
Dimensions
Scopus
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