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Become a knowledge manager at UWC 2024
The American Nuclear Society is now accepting applications for knowledge managers to work during the 2024 Utility Working Conference and Vendor Technology Expo. This year’s UWC, “Nuclear Momentum: Advancing Our Clean Energy Future,” will be held August 4–7, 2024, at the JW Marriott Marco Island Beach Resort on Marco Island, Fla.=
Avinash Sahu, Tessy Vincent
Nuclear Technology | Volume 192 | Number 2 | November 2015 | Pages 160-164
Technical Paper | Reprocessing | doi.org/10.13182/NT15-9
Articles are hosted by Taylor and Francis Online.
A nonelectrolytic method for uranous preparation, deploying catalytic reduction with hydrogen and leading to highly improved kinetics and near total conversion of uranyl nitrate to uranous nitrate, has been developed. Detailed experimental studies up to 5-ℓ scale, involving selection of stable supports for the platinum-based catalyst, optimized process parameters with regard to catalyst-to-uranium (C/U) ratio, acidity, hydrazine concentration, temperature, and pressures, have led to a deployable flow sheet, for near total conversion of uranyl nitrate to uranous nitrate.
Based on the studies at various stages, a facility for making 70 ℓ of uranous per batch in 0.5-h duration has been installed, and the process has been demonstrated on a pilot scale. Active runs have been taken, with various C/U ratios, namely, 1:200, 1:250, 1:300, and 1:350, in a gas induction reactor with uranyl nitrate solution generated from the reprocessing plant.