The effect of phosphate on crystallization, viscosity, and chemical durability of simulated Hanford site high-level radioactive waste glasses
- Pacific Northwest Lab., Richland, WA (United States); and others
Single component effects of phosphate on glass properties were investigated in simulated high-level radioactive waste (HLW) glasses formulated for two types of Hanford (Richland, Washington) HLW streams. Results showed that phosphate promoted crystallization of Li{sub 3}PO{sub 4}, Na{sub 3}Nd(PO{sub 4}){sub 2}, as well as AlPO{sub 4}. In addition, glasses with elevated concentrations of phosphate exhibited phosphate-rich phase separation prior to crystallization. Glass melt viscosity increased with the presence of phosphate, the extent of which depended on glass composition. Li{sub 3}PO{sub 4} and Na{sub 3}Nd(PO{sub 4}){sub 2}, imbedded in the glass matrix had a negligible effect on the 7-day product consistency test (PCT) releases. However, durability of the glasses was significantly decreased with the presence of AlPO{sub 4}.
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 518681
- Report Number(s):
- CONF-9604124-; TRN: 97:014691
- Resource Relation:
- Conference: 98. annual meeting of the American Ceramic Society, Indianapolis, IN (United States), 14-17 Apr 1996; Other Information: PBD: 1996; Related Information: Is Part Of Ceramic transactions: Environmental issues and waste management technologies in the ceramic and nuclear industries II. Volume 72; Jain, V.; Peller, D. [eds.]; PB: 539 p.
- Country of Publication:
- United States
- Language:
- English
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