Applications of MP-1 anion exchange resin and Eichrom LN resin in berkelium-249 purification

Du, Miting; Tan, Ryan; Boll, R. A.

doi:10.1007/s10967-018-6136-2

Cited by 1 publication

(1 citation statement)

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“…To separate Cf 3+ from Bk 3+ , Bk 3+ can eventually be oxidized to Bk 4+ under harsh conditions (heating combined with excess NaBrO 3 in 8 M HNO 3 ) but it is unstable, which adds another level of complications to the eventual separation scheme. Campaigns conducted at ORNL for the purification of mg amounts of 249 Bk take several months 5,45 and result in relatively limited purification factors. The Bk isolation process 5 comprises about 25 steps, with a purification factor for the entire procedure (product of SF values from all steps) of ~10 7 .…”

Section: Resultsmentioning

confidence: 99%

Ultra-selective ligand-driven separation of strategic actinides

2019

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Metal ion separations are critical to numerous fields, including nuclear medicine, waste recycling, space exploration, and fundamental research. Nonetheless, operational conditions and performance are limited, imposing compromises between recovery, purity, and cost. Siderophore-inspired ligands show unprecedented charge-based selectivity and compatibility with harsh industry conditions, affording excellent separation efficiency, robustness and process control. Here, we successfully demonstrate a general separation strategy on three distinct systems, for Ac, Pu, and Bk purification. Separation factors (SF) obtained with model compound 3,4,3-LI(1,2-HOPO) are orders of magnitude higher than with any other ligand currently employed: 10 6 between Ac and relevant metal impurities, and over 10 8 for redox-free Pu purification against uranyl ions and trivalent actinides or fission products. Finally, a one-step separation method (SF > 3 × 10 6 and radiopurity > 99.999%) enables the isolation of Bk from adjacent actinides and fission products. The proposed approach offers a paradigm change for the production of strategic elements.

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Section: Resultsmentioning

confidence: 99%