Partitioning effects and corrosion characteristics of oxyapatite glass-ceramic wasteforms sequestering rare-earth elements
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Oxyapatite[Ca2Nd8(SiO4)6O2] glass-ceramics have been suggested as wasteforms for the immobilisationof rare-earth radioactive nuclides because of their high waste-loading capability and good chemicaldurability. In particular, a partitioning effect is predicted to contribute to an enhancement of corrosionresistance in glass-ceramics compared with that of conjugate glasses of the same composition. Becauserare-earths are inherently insoluble nuclides, detection of changes in corrosion behavior between glassceramicsand conjugate glasses under normal conditions is not easy. In this study, therefore, we revealedthe partitioning effect by exposing glass-ceramics and glasses to solution of pH 2, 7 and 10 at 90 C for20 d. In addition, we proposed the corrosion mechanism for oxyapatite glass-ceramics under variouscorrosion conditions. Especially, the glassy phase dissolved first, followed by the oxyapatite phase duringpH 7 corrosion.
Abstract
Oxyapatite[Ca2Nd8(SiO4)6O2] glass-ceramics have been suggested as wasteforms for the immobilisationof rare-earth radioactive nuclides because of their high waste-loading capability and good chemicaldurability. In particular, a partitioning effect is predicted to contribute to an enhancement of corrosionresistance in glass-ceramics compared with that of conjugate glasses of the same composition. Becauserare-earths are inherently insoluble nuclides, detection of changes in corrosion behavior between glassceramicsand conjugate glasses under normal conditions is not easy. In this study, therefore, we revealedthe partitioning effect by exposing glass-ceramics and glasses to solution of pH 2, 7 and 10 at 90 C for20 d. In addition, we proposed the corrosion mechanism for oxyapatite glass-ceramics under variouscorrosion conditions. Especially, the glassy phase dissolved first, followed by the oxyapatite phase duringpH 7 corrosion.
참고문헌 (24)
- I. Bardez, "Structural Characterisations of Rare Earth-Rich Glasses for Nuclear Waste Immobilisation", MRS Proceedings, 807 (2003), Springer Science and Business Media LLC[DOI]
- J. Colombani, "The alkaline dissolution rate of calcite", J. Phys. Chem. Lett, 7, pp.2376~2380 (2016)[DOI]
- J. Crum, "Cold crucible induction melter studies for making glass ceramic waste forms : a feasibility assessment", J. Nucl. Mater, 444, pp.481~492 (2014)[DOI]
- Jarrod V. Crum, "Multi-Phase Glass-Ceramics as a Waste Form for Combined Fission Products: Alkalis, Alkaline Earths, Lanthanides, and Transition Metals", Journal of the American Ceramic Society, 95(4), pp.1297~1303 (2012), Wiley[DOI]
- A. Jarosíkov"a, "The pH-dependent leaching behavior of slags from various stages of a copper smelting process : environmental implications", J. Environ. Manage, 187, pp.178~186 (2017)[DOI]
- M. Kim, "Vitusite glass-ceramics wasteforms for immobilization of lanthanide wastes generated by pyro-processing", Ceram. Int, 41, pp.6132~6136 (2015)[DOI]
- M. Kim, "Calcium-borosilicate glass-ceramics wasteforms to immobilize rare-earth oxide wastes from pyro-processing", J. Nucl. Mater, 467, pp.224~228 (2015)[DOI]
- M. Kim, "characterization and dissolution behavior of calcium-aluminoborate glass wasteforms to immobilize rare-earth oxides", Sci. Rep, 8, pp.5320~ (2018)[DOI]
- M. A. Kim, "Structure analysis of vitusite glasseceramic waste forms using extended x-ray absorption fine structures", Ceram. Int, 43, pp.4687~4691 (2017)[DOI]
- N. A. Krishnan, "Predicting the dissolution kinetics of silicate glasses using machine learning", J. Non-Cryst. Solids, 487, pp.37~45 (2018)[DOI]
- Indu Kumari, "A review on UREX processes for nuclear spent fuel reprocessing", Nuclear Engineering and Design, 358, pp.110410~ (2020), Elsevier BV[DOI]
- W. E. Lee, "Immobilisation of radioactive waste in glasses, glass composite materials and ceramics", Advances in Applied Ceramics, 105(1), pp.3~12 (2006), Informa UK Limited[DOI]
- J. S. McCloy, "Glass-ceramics for nuclear-waste immobilization", MRS Bull, 42, pp.233~240 (2017)[DOI]
- S. Gin, "Radionuclides containment in nuclear glasses : an overview", Radiochim. Acta, 105, pp.927~959 (2017)[DOI]
- B. Karmakar, "Glass Nanocomposites: Synthesis, Properties, and Applications" (2016), William Andrew
- H. Toraya, "A new method for quantitative phase analysis using X-ray powder diffraction data : direct derivation of weight fractions from observed integrated intensities and chemical compositions of the individual phases", J. Appl. Crystallogr, 49, pp.1508~1516 (2016)[DOI]
- M. M. Smedskjaer, "Topological principles of borosilicate glass chemistry", J. Phys. Chem. B, 115, pp.12930~12946 (2011)[DOI]
- J. Neeway, "Vapor hydration of SON68 glass from 90C to 200C : a kinetic study and corrosion products investigation", J. non-cryst. Solid, 358, pp.2894~2905 (2012)[DOI]
- A. Abdelouas, "A preliminary investigation of the ISG glass vapour hydration", Int. J. Appl. Glass Sci, 4, pp.307~316 (2013)[DOI]
- S. Mohd Fadzil, "Liquidus temperature and chemical durability of selected glasses to immobilize rare earth oxides waste", J. Nucl. Mater, 465, pp.657~663 (2015)[DOI]
- for a glass-ceramic waste form, "Journal of Nuclear Materials", 2018, 623~634, pp.Elsevier BV, 10.1016[DOI]
- dissolution in glass-ceramic nuclear waste forms in acidic, neutral, and alkaline conditions, "Journal of Nuclear Materials", 2019, 227~237, pp.Elsevier BV, 10.1016[DOI]
- N. Y. Mostafa, "Hydrothermal synthesis and characterization of aluminium and sulfate substituted 1. 1 nm tobermorites", J. Alloys Compd, 467, pp.332~337 (2009)[DOI]
- Z. Tian, "General trend on the phase stability and corrosion resistance of rare earth monosilicates to molten calciumemagnesiumealuminosilicate at 1300 oC", Corrosion Sci, 148, pp.281~292 (2019)[DOI]
