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Radiation-resistant metal-organic framework enables efficient separation of krypton fission gas from spent nuclear fuel
Name
s41467-020-16647-1.pdf
Description
Published version
Size
1.92 MB
Format
Adobe PDF
Checksum (MD5)
fb16984eb4d68523812c1ccbad0f1d51
Author(s)
Elsaidi, Sameh K
Mohamed, Mona H
Helal, Ahmed S
Galanek, Mitchell
Pham, Tony
Suepaul, Shanelle
Space, Brian
Hopkinson, David
Thallapally, Praveen K
Li, Ju
Date Issued
2020
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Version
Final published version
Abstract
© 2020, The Author(s). Capture and storage of volatile radionuclides that result from processing of used nuclear fuel is a major challenge. Solid adsorbents, in particular ultra-microporous metal-organic frameworks, could be effective in capturing these volatile radionuclides, including 85Kr. However, metal-organic frameworks are found to have higher affinity for xenon than for krypton, and have comparable affinity for Kr and N2. Also, the adsorbent needs to have high radiation stability. To address these challenges, here we evaluate a series of ultra-microporous metal-organic frameworks, SIFSIX-3-M (M = Zn, Cu, Ni, Co, or Fe) for their capability in 85Kr separation and storage using a two-bed breakthrough method. These materials were found to have higher Kr/N2 selectivity than current benchmark materials, which leads to a notable decrease in the nuclear waste volume. The materials were systematically studied for gamma and beta irradiation stability, and SIFSIX-3-Cu is found to be the most radiation resistant.
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Creative Commons Attribution 4.0 International license
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DOI of Published Version
10.1038/S41467-020-16647-1
