INL Intern Poster Session

Thomson, Alexis [Idaho National Laboratory]

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DOE OSTI · 3378835

INL Intern Poster Session

Thomson, Alexis [Idaho National Laboratory]

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Abstract

Characterization of off-gas constituents from nuclear fuel reprocessing can be measured using a residual gas analyzer. Characterization of this off-gas is important in a closed fuel cycle, where gasses such as Nox, Kr, I, and C-14 need to be removed from reprocessing plants to meet regulatory requirements. Both Kr and Xe have low chemical reactivity, making capture and separation difficult. Solid sorbents can be used to capture these gases as an alternative to cryogenic distillation, which is energy intensive and hazardous. AgZ-PAN and HZ-PAN are two solid sorbents that have demonstrated selective capture of Xe and Kr. A residual gas analyzer can be used to obtain breakthrough curves that demonstrate how well this adsorption and separation occur. The breakthrough curve is dependent on packing density, column size, and flow rate. Data obtained from the RGA was verified with a gas chromatographer.

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11 - NUCLEAR FUEL CYCLE AND FUEL MATERIALS Adsorption Breakthrough Curves Off-gas Capture Residual Gas Analyzer Used Nuclear Fuel Reprocessing

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Thomson, Alexis [Idaho National Laboratory]. 2026-07-13. INL Intern Poster Session. https://www.osti.gov/biblio/3378835

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