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

B. E. Scheetz, Dinesh Kumar Agrawal, E. Breval, R. Roy

Research output: Contribution to journalArticle

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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.

Original languageEnglish (US)
Pages (from-to)489-505
Number of pages17
JournalWaste Management
Volume14
Issue number6
DOIs
StatePublished - Jan 1 1994

All Science Journal Classification (ASJC) codes

  • Waste Management and Disposal

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