Glass, ceramic, and glass-crystalline matrices for HLW immobilisation

We briefly overview the utilisation of glasses, ceramics and glass crystalline materials (GCMs) composed of both vitreous and crystalline phases focusing on nuclear waste immobilisation and potential use of some advanced waste forms for incorporation of the rare earth elements (REE) and minor actini...

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Bibliographic Details
Published in:Open ceramics 2023-06, Vol.14, p.100355, Article 100355
Main Authors: Ojovan, Michael I., Yudintsev, Sergey V.
Format: Article
Language:English
Subjects:
Ceramic
Glass
Glass crystalline material
Immobilisation
Inertisation
Nuclear waste
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Summary:We briefly overview the utilisation of glasses, ceramics and glass crystalline materials (GCMs) composed of both vitreous and crystalline phases focusing on nuclear waste immobilisation and potential use of some advanced waste forms for incorporation of the rare earth elements (REE) and minor actinide (MA: Am, Cm) fraction of high-level waste (HLW). •Na–B–Si and Na–Al–P glass are used to immobilise the large amounts of high-level radioactive waste (HLW).•One of the most problematic is rare earths (REE) – minor actinides (MA) fraction of HLW.•Crystalline ceramics provide superior confinement properties for HLW radionuclides including REE-MA fraction.•Glass-crystalline materials (GCM) combine advantages of both glasses and crystals to retain HLW radionuclides.•Compared to homogeneous glasses GCMs can incorporate larger amounts of waste and they can be produced at lower processing temperatures.
ISSN:2666-5395
2666-5395
DOI:10.1016/j.oceram.2023.100355