Sodium zirconium phosphate (NZP) as a host structure for nuclear waste immobilization: A review

B. E. Scheetz; D. K. Agrawal; E. Breval; R. Roy

doi:10.1016/0956-053X(94)90133-3

Sodium zirconium phosphate (NZP) as a host structure for nuclear waste immobilization: A review

B. E. Scheetz, D. K. Agrawal, E. Breval, R. Roy

Materials Research Institute (MRI)

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183 Scopus citations

Abstract

Sodium zirconium phosphate [NZP] structural family, of which NaZr₂P₃O₁₂ 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 dissolve NZP than quartz.

Original language	English (US)
Pages (from-to)	489-505
Number of pages	17
Journal	Waste Management
Volume	14
Issue number	6
DOIs	https://doi.org/10.1016/0956-053X(94)90133-3
State	Published - 1994

All Science Journal Classification (ASJC) codes

Waste Management and Disposal

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10.1016/0956-053X(94)90133-3

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abstract = "Sodium zirconium phosphate [NZP] structural family, of which NaZr2P3O12 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 dissolve NZP than quartz.",

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Sodium zirconium phosphate (NZP) as a host structure for nuclear waste immobilization: A review

Abstract

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