Immobilization of sodium-bearing high-level radioactive waste in synroc containing (Na{sub 0.5}Nd{sub 0.5})TiO{sub 3}-type perovskite

Journal Article · Wed Jan 01 00:00:00 EST 1997 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1997.tb02819.x· OSTI ID:455178

Li, L; Luo, S; Tang, B; Wang, D ^[1]

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1. China Inst. of Atomic Energy, Beijing (China)

This study on the immobilization of high-sodium-bearing HLW in synroc indicates that (Na{sub 0.5}Nd{sub 0.5})TiO{sub 3}-type perovskite can be used to incorporate a high content of sodium in synroc. Synroc samples containing 13.0 wt% waste oxide and 5.7 wt% Na{sub 2}O show very well chemical durability and physical properties. The standard Synroc-C formulation can incorporate only 2 wt% Na{sub 2}O, so this study greatly improved the immobilization ability of sodium in Synroc-related material.

• Sponsoring Organization: USDOE
• OSTI ID: 455178
• Journal Information: Journal of the American Ceramic Society, Vol. 80, Issue 1; Other Information: PBD: Jan 1997
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
36 MATERIALS SCIENCE
SYNROC PROCESS
HIGH-LEVEL RADIOACTIVE WASTES
MICROSTRUCTURE
HARDNESS
SYNTHETIC ROCKS
TITANIUM OXIDES
PEROVSKITE
BULK DENSITY
POROSITY
LEACHING
EXPERIMENTAL DATA