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논문 기본 정보

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학술저널
저자정보
García-Gómez Sonia (EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Polit`ecnica de Catalunya (UPC)) Giménez Javier (EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Polit`ecnica de Catalunya (UPC)) Casas Ignasi (EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Polit`ecnica de Catalunya (UPC)) Llorca Jordi (EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Polit`ecnica de Catalunya (UPC)) De Pablo Joan (EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Polit`ecnica de Catalunya (UPC)) Martínez-Torrents Albert (EURECAT, Centre Tecnol`ogic de Catalunya) Clarens Frederic (EURECAT, Centre Tecnol`ogic de Catalunya) Kokinda Jakub (EURECAT, Centre Tecnol`ogic de Catalunya) Iglesias Luis (EURECAT, Centre Tecnol`ogic de Catalunya) Serrano-Purroy Daniel (European Commission, Joint Research Centre (JRC),)
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology Vol.56 No.1
발행연도
2024.1
수록면
34 - 41 (8page)
DOI
10.1016/j.net.2023.08.024

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This work presents experimental data and modelling of the release of Mo from high-burnup spent nuclear fuel (63 MWd/kgU) at two different pH values, 8.4 and 13.2 in air. The release of Mo from SF to the solution is around two orders of magnitude higher at pH = 13.2 than at pH = 8.4. The high Mo release at high pH would indicate that Mo would not be congruently released with uranium and would have an important contribution to the Instant Release Fraction, with a value of 5.3%. Parallel experiments with pure non irradiated Mo(s) and XPS determinations indicated that the faster dissolution at pH = 13.2 could be the consequence of the higher releases from metallic Mo in the fuel through a surface complexation mechanism promoted by the OH and the oxidation of the metal to Mo(VI) via the formation of intermediate Mo(IV) and Mo(V) species.

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