Leaching behaviors and mechanisms of vitrified forms for the low-level radioactive solid wastes
SCIE
SCOPUS
- Title
- Leaching behaviors and mechanisms of vitrified forms for the low-level radioactive solid wastes
- Authors
- Kim, M.; Kim, H.G.; Kim, S.; Yoon, J.-H.; Sung, J.Y.; Jin, J.S.; Lee, M.-H.; Kim, C.-W.; Heo, J.; Hong, K.-S.
- Date Issued
- 2020-02
- Publisher
- ELSEVIER
- Abstract
- Leaching behaviors and mechanisms of commercialized glass wasteforms to sequester low-level solid-wastes were investigated: SG glass for resin waste and DG-2 glass for dry active waste. After ANS 16.1 leaching test, leachabilities of the nuclides, Co, Cs, and Sr, were all lager than 14, which ma the requirement of the US-Nuclear Regulatory Commission. Holes of diameters 5-10 mu m remained on the surface of the SG and crevices of lengths 10-50 mu m were observed on the surface of the DG-2. We analyzed elemental compositions of the SG and the DG-2 with depths. For the SG, Si, Al, Ca, and Mg were accumulated and Na was depleted up to nearly 1.5 mu m compared to an internal glass. For the DG-2, concentrations of B, Na, Al, Ca and Sr started to decrease from 2.5 mu m even though other minor elements are still remained their concentrations. We suggested leaching mechanisms: alkali elements including H would diffuse through the holes on the SG, while most of the elements including Si and Al would diffuse through the crevices on the DG-2.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/100173
- DOI
- 10.1016/j.jhazmat.2019.121296
- ISSN
- 0304-3894
- Article Type
- Article
- Citation
- JOURNAL OF HAZARDOUS MATERIALS, vol. 384, 2020-02
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- There are no files associated with this item.
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