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| Home > Publications database > Development of Solvent Extraction Processes for Grouped Separation of Actinides in Europe |
| Home > Publications database > Development of Solvent Extraction Processes for Grouped Separation of Actinides in Europe |
| Conference Presentation (Other) | FZJ-2022-03491 |
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2022
Abstract: It is clear that closed nuclear fuel cycles with the recycling of spent nuclear fuels can enhance the sustainabilityof nuclear energy (Taylor et al. 2022a, 2022b). In Europe two strands of research have been followed: (a) theheterogeneous recycling of (U,Pu) in the PUREX process followed by a minor actinide separation process(Geist et al., 2021) and (b) the homogeneous recycling of actinides in a grouped actinide extraction (GANEX)process. The GANEX option has some advantages since it is based on fully decomposable (“CHON”) solventsand produces separate uranium and transuranic products – this adds a proliferation barrier due to theplutonium being mixed with minor actinides.The first GANEX cycle (GANEX-1) to separate the bulk uranium uses a monoamide as a selective extractant.The second cycle is more complex and a number of concepts have been developed in Europe over the last15+ years, including within European collaborative projects (ACSEPT, SACSESS, GENIORS). The GANEX-2cycle requires innovative solvent formulations capable of co-extracting plutonium and the minor actinides(including neptunium) as well as separating the trivalent minor actinides from the lanthanides. Processes havebeen developed and tested on the lab scale, including hot tests with spent fuel (Lyseid Authen et al., 2022).The various solvent extraction processes are briefly introduced, the most suitable choices are pointed out, andthe process schemes are compared to one another.Geist, A.; Adnet, J.-M.; Bourg, S.; Ekberg, C.; Galán, H.; Guilbaud, P.; Miguirditchian, M.; Modolo, G.; Rhodes,C.; Taylor, R., An overview of solvent extraction processes developed in Europe for advanced nuclear fuelrecycling, part 1-Heterogeneous recycling.Separation Science and Technology,56, 2021, 1866–1881.https://doi.org/10.1080/01496395.2020.1795680Lyseid Authen, T.; Adnet, J.-M.; Bourg, S.; Carrott, M.; Ekberg, C.; Galán, H.; Geist, A.; Guilbaud, P.;Miguirditchian, M.; Modolo, G.; Rhodes, C.; Wilden, A.; Taylor, R., An overview of solvent extraction processesdeveloped in Europe for advanced nuclear fuel recycling, Part 2 — homogeneous recycling,SeparationScience and Technology2021, 1-21. https://doi.org/10.1080/01496395.2021.2001531.Taylor, R.; Bodel, W.; Stamford, L.; Butler, G., A review of environmental and economic implications of closingthe nuclear fuel cycle. Part 1: Wastes and environmental impacts,Energies2022, 15, 1433.https://doi.org/10.3390/en15041433.Taylor, R.; Bodel, W.; Butler, G., A Review of Environmental and Economic Implications of Closing the NuclearFuel Cycle-Part Two: Economic Impacts,Energies, 15, 2022, 2472. https://doi:10.3390/en15072472.
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