Highly lipophilic o-sulfonamidophenol extractants for actinide separation from alkaline high-level waste.
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| Title: | Highly lipophilic o-sulfonamidophenol extractants for actinide separation from alkaline high-level waste. |
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| Authors: | Ruddock, Leigh D.1 (AUTHOR), Mudgal, Mukesh M.1 (AUTHOR), Panzer, René1 (AUTHOR), Adedoyin, Oluwaseun W.1 (AUTHOR), Diaz, Angie B.1 (AUTHOR), Lehman-Andino, Ingrid2 (AUTHOR), Peters, Thomas2 (AUTHOR), DiPrete, David P.2 (AUTHOR), Kavallieratos, Konstantinos1 (AUTHOR) kavallie@fiu.edu |
| Source: | Journal of Radioanalytical & Nuclear Chemistry. Mar2026, Vol. 335 Issue 3, p2403-2414. 12p. |
| Subject Terms: | *Radioactive waste management, *Solvent extraction, *Ligands (Chemistry), *Hydrophobic compounds, *Radioactive wastes, *Ionizing radiation, *Cesium ions |
| Geographic Terms: | United States |
| Abstract: | The management of legacy high-level radioactive waste (HLW) from the U.S. nuclear weapons production remains a major environmental challenge. This study reports the synthesis and evaluation of four lipophilic o-sulfonamidophenol ligands for selective separation of Sm(III) from alkaline HLW simulants. Compounds msa6 and msa7 demonstrated up to 30% Sm (III) recovery under modified Next-Generation Caustic-Side Solvent Extraction (NG-CSSX) conditions, while branched analogs mm1 and mm2 achieved 31–44% recovery. Under radiolytic conditions (up to 202 kGy), msa6 and msa7 effectively extracted Am-241 and Eu-154 with distribution ratios up to DEu = 1.64 and DAm = 0.79, maintaining high Cs(I) selectivity (DCs > 200). [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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