Scholarlink

<p>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 <i>o</i>-sulfonamidophenol ligands for selective separation of Sm(III) from alkaline HLW simulants. Compounds <b>msa6</b> and <b>msa7</b> 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&#xa0;kGy), msa6 and msa7 effectively extracted Am-241 and Eu-154 with distribution ratios up to D<sub>Eu</sub> = 1.64 and D<sub>Am</sub> = 0.79, maintaining high Cs(I) selectivity (D<sub>Cs</sub> &gt; 200).</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Highly lipophilic o-sulfonamidophenol extractants for actinide separation from alkaline high-level waste

  • 期刊论文

  • 发表日期：

    2026年1月2日

查看全文
  • Leigh D. Ruddock,
  • Mukesh M. Mudgal,
  • René Panzer,
  • Oluwaseun W. Adedoyin,
  • Angie B. Diaz,
  • Ingrid Lehman-Andino,
  • Thomas Peters,
  • David P. DiPrete,
  • Konstantinos Kavallieratos

摘要

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).