Fabrication and physical properties of lanthanide oxide glass wasteform for the immobilization of lanthanide oxide wastes generated from pyrochemical process
- Title
- Fabrication and physical properties of lanthanide oxide glass wasteform for the immobilization of lanthanide oxide wastes generated from pyrochemical process
- Author
- 김종경
- Keywords
- Pyrochemical process; LiCl-KCl eutectic waste salt; Lanthanide oxide fission product; Glass wasteform; Vitrification
- Issue Date
- 2014-03
- Publisher
- Springer Science + Business Media
- Citation
- JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, Vol.299 No.3 [2014], pp. 1731-1738
- Abstract
- The pyrochemical process, which uses a dry method to recycle used nuclear fuel generates waste LiCl-KCl salt containing radioactive lanthanide elements. To reuse LiCl-KCl salt, the lanthanide elements are separated through a precipitation method promoted by oxygen sparging and the separated fission product of lanthanide oxide should be fabricated into durable wasteforms sustainable for several 1,000 years to store in a final geological repository. Herein, we report the fabrication of a borosilicate glass based wasteform with a glass matrix of SiO2-Al2O3-B2O3 having a high waste loading of 50 wt% lanthanide oxide. Th physical properties of four kinds of wasteforms having a different lanthanide oxide waste composition were evaluated. To investigate the long-term physical stability of each sample having 50 wt% lanthanide oxide waste loading, time-temperature-transformation (TTT) test was conducted at 500 and 700 degrees C for 60 and 180 h, and the physical properties were evaluated after each TTT test.
- URI
- http://link.springer.com/article/10.1007%2Fs10967-013-2863-6http://hdl.handle.net/20.500.11754/50527
- ISSN
- 0236-5731
- DOI
- 10.1007/s10967-013-2863-6
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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