Sodium zirconium phosphate (NZP) as a host structure for nuclear waste immobilization: A review
- Pennsylvania State Univ., University Park, PA (United States)
Sodium zirconium phosphate [NZP] structural family, of which NaZr[sub 2]P[sub 3]O[sub 12] is the parent composition, has been reviewed as a host ceramic waste form for nuclear waste immobilization. NZP compounds are characterized for their ionic conductivity, low thermal expansion and structural flexibility to accommodate a large number of multivalent ions. This latter property of the [NZP] structure allows the incorporation of almost all 42 nuclides present in a typical commercial nuclear waste. The leach studies of simulated waste forms based on NZP have shown reasonable resistance for the release of its constituents. The calculation of dissolution rates of NZP structure has demonstrated that it would take 20,000 times longer to dissolved NZP than quartz.
- OSTI ID:
- 6843747
- Journal Information:
- Waste Management; (United States), Vol. 14:6; ISSN 0956-053X
- Country of Publication:
- United States
- Language:
- English
Similar Records
The dissociation of NZP (Ca{sub 0.5}Sr{sub 0.5}Zr{sub 4}P{sub 6}O{sub 24}) during plasma spraying[Sodium Zirconium Phosphate]
Comparison of sodium zirconium phosphate and Synroc matrices for immobilization of high-level waste
Related Subjects
RADIOACTIVE WASTES
SOLIDIFICATION
SODIUM PHOSPHATES
CHEMICAL PROPERTIES
PHYSICAL PROPERTIES
ZIRCONIUM PHOSPHATES
RADIOACTIVE WASTE PROCESSING
ALKALI METAL COMPOUNDS
MANAGEMENT
MATERIALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE MANAGEMENT
SODIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
ZIRCONIUM COMPOUNDS
052001* - Nuclear Fuels- Waste Processing