Solvent Optimization Studies for a New EURO-GANEX Process with 2,2’-Oxybis(N,N-di-n-decylpropanamide) (mTDDGA) and Its Radiolysis Products
| Autor: | Bart Verlinden, Andreas Wilden, Karen Van Hecke, Richard J. M. Egberink, Jurriaan Huskens, Willem Verboom, Michelle Hupert, Patrik Weßling, Andreas Geist, Petra J. Panak, Rainier Hermans, Marc Verwerft, Giuseppe Modolo, Koen Binnemans, Thomas Cardinaels |
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| Přispěvatelé: | Verlinden, Bart, Wilden, Andreas, Van Hecke, Karen, Egberink, Richard J. M., Huskens, Jurriaan, Verboom, Willem, Hupert, Michelle, Wessling, Patrik, Geist, Andreas, Panak, Petra J., Hermans, Rainier, Verwerft, Marc, Modolo, Giuseppe, Binnemans, Koen, Cardinaels, Thomas, MESA+ Institute, Molecular Nanofabrication |
| Rok vydání: | 2022 |
| Předmět: |
diglycolamides
EXTRACTION Technology Science & Technology Solvent extraction STABILITY General Chemical Engineering Chemistry Multidisciplinary solvent optimization TRIVALENT ACTINIDES TODGA radiolysis General Chemistry DEGRADATION GANEX MODIFIED DIGLYCOLAMIDES Chemistry Physical Sciences GAMMA-RADIOLYSIS ddc:540 SEPARATION RADIATION-CHEMISTRY ddc:600 NEPTUNIUM |
| Zdroj: | Solvent Extraction and Ion Exchange, 41 (1), 59-87 Solvent extraction and ion exchange 41(1), 59-87 (2023). doi:10.1080/07366299.2022.2125151 Solvent extraction and ion exchange, 41(1), 59-87. Taylor & Francis |
| ISSN: | 0736-6299 1532-2262 |
| DOI: | 10.6084/m9.figshare.21261671 |
| Popis: | 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 Co-60. 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. This remarkable observation is possibly promoted by the presence of the main degradation compound which extracts plutonium verywell. This work has been partially supported by the ENEN+ project that has received funding from the Euratom research and training Work Programme 2016 – 2017 – 1#755576. Financial support for this research was provided by the H2020 Euratom Research and Innovation Programme under grant agreement n°755171 (project GENIORS). H2020 Euratom Research and Innovation Programme [755171] |
| Databáze: | OpenAIRE |
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