Ultrafiltration separation of Am(VI)-polyoxometalate from lanthanides

Abstract Partitioning of americium from lanthanides (Ln) present in used nuclear fuel plays a key role in the sustainable development of nuclear energy 1–3 . This task is extremely challenging because thermodynamically stable Am(III) and Ln(III) ions have nearly identical ionic radii and coordination chemistry. Oxidization of Am(III) to Am(VI) produces AmO 2 2+ ions distinct with Ln(III) ions, which has the potential to facilitate separations in principle. However, the rapid reduction of Am(VI) back to Am(III) by radiolysis products and organic reagents required for the traditional separation protocols including solvent and solid extractions hampers practical redox-based separations. Herein, we report a…

• UD
  U.S. Department of Energy

  Awards: DE-FG02-13ER16414, DE-FG02-, DE-FG02
• DF
  Deutsche Forschungsgemeinschaft

  Award: AL1527/3-1
• NN
  National Natural Science Foundation of China

  Awards: 22222606, 21790374, 21790370, 21825601, 22227809, 21822606, 21790372, 22006106
• GO
  Government of Jiangsu Province
• NS
  Natural Science Foundation of Jiangsu Province

  Award: BK20211546
• OO
  Office of Science

  Award: DE-FG02-13ER16414
• BE
  Basic Energy Sciences

  Awards: DE-FG02, DE-FG02-13ER16414