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September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Deep geologic repository progress—2025 Update
Editor's note: This article has was originally published in November 2023. It has been updated with new information as of June 2025.
Outside my office, there is a display case filled with rock samples from all over the world. It contains a disk of translucent, orange salt from the Waste Isolation Pilot Plant near Carlsbad, N.M.; a core of white-and-bronze gneiss from the site of the future deep geologic repository in Eurajoki, Finland; several angular chunks of fine-grained, gray claystone from the underground research laboratory at Bure, France; and a piece of coarse-grained granite from the underground research tunnel in Daejeon, South Korea.
D.A. Spagnolo, A.E. Everatt, P.W.K. Seto, K.T. Chuang
Fusion Science and Technology | Volume 14 | Number 2 | September 1988 | Pages 501-506
Tritium Processing | Proceedings of the Third Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Toronto, Ontario, Canada, May 1-6, 1988) | doi.org/10.13182/FST88-A25182
Articles are hosted by Taylor and Francis Online.
The CECE process with AECL hydrophobic catalyst is ideally suited for extracting tritium from water because of its high separation factor and mild operating conditions. A simple linear expression that relates the overall rate constant (Kya) to the inverse of the equilibrium slope (m) for H2/H2O isotope exchange was developed from the two-film mass transfer model. Laboratory and pilot data were used to demonstrate the applicability of this simple relationship which allows reaction rates for any pair of hydrogen isotope species at any given concentration to be predicted from rate data of any other isotope pair and/or concentration range. This approach was used to design a hypothetical CECE plant for concentrating tritiated light water to 100 Ci/L (3.7 TBq/L) to give a 250-fold reduction in waste volume.