Browse > Article

Immobilization of Radioactive Rare Earth oxide Waste by Solid Phase Sintering  

Ahn, Byung-Gil (Korea Atomic Energy Research Institute)
Park, Hwan-Seo (Korea Atomic Energy Research Institute)
Kim, Hwan-Young (Korea Atomic Energy Research Institute)
Lee, Han-Soo (Korea Atomic Energy Research Institute)
Kim, In-Tae (Korea Atomic Energy Research Institute)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.8, no.1, 2010 , pp. 49-56 More about this Journal
Abstract
In the pyroprocessing of spent nuclear fuels, LiCl-KCl waste salt containing radioactive rare earth chlorides are generated. The radioactive rare earth oxides are recovered by co-oxidative precipitation of rare earth elements. The powder phase of rare eath oxide waste must be immobilized to produce a monolithic wasteform suitable for storage and ultimate disposal. The immobilization of these waste developed in this study involves a solid state sintering of the waste with host borosilicate glass and zinc titanate based ceramic matrix(ZIT). And the rare-earth monazite which synthesised by reaction of ammonium di-hydrogen phosphate with the rare earth oxides waste, were immobilzed with the borosilicate glass. It is shown that the developed ZIT ceramic wasteform is highly resistant the leaching process, high density and thermal conductivity.
Keywords
rare earth oxide; immobilization; solid phase sintering; monazite; borosilicate glass;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Jae-Hyung Yoo, Kwon-Pyo Hong and Han-Soo Lee, "A Concepptual design study for a spent fuel pyroprocessing facility of a demonstration scale J. of the Korean Radioactive Waste Society, 6(3), pp. 233-244, (2008).   과학기술학회마을
2 A. E. Ringwood, S. E. Kesson, N. G. Ware, W. D. Hibberson and A. Ma,jor, "The SYNROC process: A geochemical approach to nuclear waste immobilization", Geochem. J., 13[141] (1979)
3 Reference spent nuclear fuel for pyroprocessing facility design Dong-Keun Cho, Seok-Kyun Yoon, Heui-Joo Choi, Jongwon Choi and Won-II Ko, J. of the Korean Radioactive Waste Society, 6(3), pp. 225-232, (2008).   과학기술학회마을
4 J. J. Laidler, J. E. Battles, W. E. Miller, J. P. Ackerman, E. L. Carls, "Development of pyroprocessing technology," Prog. Nucl. Energy, 31[1/2], pp. 131-140 (1997).   DOI   ScienceOn
5 J. Campbell, C. L. Hoenig, F. Ryerson, M. Guiman, R. V. Konynenburg and R. Rozsa, "Properties of SYNROC-D nuclear wasteform: A-State-the-Art Review", UVRL-53240 (1982)
6 T. Koyama, T. Hijikata, T. Usami, T. Inoue, S. Kitawaki, T. Shinozaka, M. Fukusima, M. Myochin, "Integrated experiments of eletrometallurgical pyroprocessing using plutonium oxide," J. Nucl. Sci. Technol., 44[3], pp. 383-392 (2007).
7 L. Bois, M.J.Guittet, F. Carrot, P. Trocellier, M. Gautier-Soyer, " Preliminary results on the leaching process of phosphate ceramics potential hosts for actinide immobilization", J. Nuc. Materials, 297, pp. 129-137 (2001)   DOI   ScienceOn
8 B. Damien, A. Fabienne, C. Thibault, S. Dimitri, and B. A. Didier, "Solid-state synthesis of monazite -type compounds $LnPO_{4}$ (Ln=La to Gd)", Solid State Science, 9, pp.432-439 (2007).   DOI   ScienceOn
9 ASTM C 1285-94, Standard Test Methods for Determining Chemical Durability of Nuclear Waste Glasses: The Product Consistency Test (PCT)," Annual Book of ASTM Standards, American Society for Testing and Materials, West Conshohoken, PA, (1995).
10 A. E. Ringwood, S. E. Kesson, N. G. Ware, W. D. Hibberson and A. Major, "Immobilization of high level nuclear reactor waste in SYNROC", Nature, 278(219), (1979)
11 C. Lopez, X. Deschanels, J. M. bart, J. M. Boubals, C. Den Auwer, E. Simoni, Solubility of actinide surrogates in nuclear glasses, J. of Nuc. Materials, 312, pp.76-80 (2003).   DOI   ScienceOn
12 F. Poitras son, E. Olekers, J. Schott, and J. M. Montel, "Experimental determination of synthetic NdPO4 monazite end-member solubility in water from $21^{\circ}C$ to $300^{\circ}C$: Imbrications of rare earth element mobility in crustal fluids", Geochemica et Cosmochimica Acta, 40[10], pp. 2207-2221 (2004).
13 Y. J. Cho, H. C. Yang, H. C. Eun, E. H. Kim, I. T. Kim, "Characteristics of oxidation reaction of rareearth chlorides for precipitation in LiCI-KCI molten salt by oxygen sparging," J. Nucl. Sci. Technol., 43[10], pp.1280-1286 (2006).   DOI   ScienceOn