Vitrification of Hanford Tank 241-AP-107 with Recycled Condensate

Dixon, Derek R.; Westesen, Amy; Hall, Mark; Stewart, Cody; Lang, Jesse B.; Cutforth, Derek; Eaton, William; Peterson, Reid A.

doi:10.2172/1766813

Cited by 2 publications

(1 citation statement)

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“…No clear trend on the resulting iodine species in the glass based on feed species (I − and/ or IO 3 − ) has been observed (Muller et al, 2014;McKeown et al, 2015). Iodine speciation may also influence melter behavior as in melter testes differences in iodine retention were not observed when iodide or iodate was added to the melt, but CH 3 I was not retained in the glass (Kruger et al, 2018;Choi, 2020;Dixon et al, 2020).…”

Section: Borosilicate Glassmentioning

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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