Crystallization behavior of boron in low-temperature immobilization of iodine waste

Feng, Yaxin; Wei, Guilin; Liu, Yi; Han, Wenhong; Chen, Yan; Sun, Runjie; Peng, Lin; Ma, Min; Zhang, Zhentao; Lu, Xirui

doi:10.1016/j.jssc.2021.122698

Cited by 8 publications

(2 citation statements)

References 34 publications

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“…To control the properties of a boron glass ceramic, ZnO and Bi 2 O 3 have been added to aid in formation of separate BO 4 and ZnO 4 glass units along with the stabilized Ag. Bi 2 O 3 can form BiO n (n = 3 or 6), which can combine with B 2 O 3 to favor formation of BO 4 units which increase glass stability (Litwinek-Rozbicka et al, 2021;Feng et al, 2022;Wen et al, 2022). ZnO reduces the glass transition temperature and increases the density of the glass (Kim et al, 2009).…”

Section: Boron Glass Ceramicmentioning

confidence: 99%

Review of recent developments in iodine wasteform production

et al. 2022

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Radioiodine capture and immobilization is not only important to consider during the operation of reactors (i.e., I-131), during nuclear accidents (i.e., I-131 and I-129) or nuclear fuel reprocessing (i.e., I-131 and I-129), but also during disposal of nuclear wastes (i.e., I-129). Most disposal plans for I-129-containing waste forms (including spent nuclear fuel) propose to store them in underground repositories. Here, iodine can be highly mobile and, given its radiotoxicity, needs to be carefully managed to minimize long-term environmental impacts arising from disposal. Typically, any process that has been used to capture iodine from reprocessing or in a reactor is not suitable for direct disposal, rather conversion into a wasteform for disposal is required. The objectives of these materials are to use either chemical immobilization or physical encapsulation to reduce the leaching of iodine by groundwaters. Some of the more recent ideas have been to design capture materials that better align with disposal concepts, making the industrial processing requirements easier. Research on iodine capture materials and wasteforms has been extensive. This review will act as both an update on the state of the research since the last time it was comprehensively summarized, and an evaluation of the industrial techniques required to create the proposed iodine wasteforms in terms of resulting material chemistry and applicability.

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Section: Boron Glass Ceramicmentioning

confidence: 99%

Review of recent developments in iodine wasteform production

et al. 2022

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“…Although, iodosodalite crystalline phase has not been studied extensively, it appears as an appropriate crystalline phase for immobilizing radioactive iodine as 1) it incorporates a large quantity of iodine (>10 mol.% I) in its cage structure, 2) it is stable at high-temperature (up to at least 950°C, [40]), 3) it incorporates iodine under different forms, either Ior IO3 - [41], 4) it can be obtained using different methods (i.e. aqueous, hydrothermal and sol-gel syntheses, [40]) and 5) several studies measured the dissolution rate of iodosodalite [42,43], which showed good chemical resistance to standard leaching tests.…”

Section: Introductionmentioning

confidence: 99%