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Fixation of some major fission products in NaZr2P3O12 ceramic employing microwave heating
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A. H. Naik
Published/Copyright:
September 25, 2009
Summary
Attempts were made to introduce four major fission products, namely, Cs, Sr, Ru and Te into thermodynamically stable NaZr2P3O12 (NZP) ceramic, considered to be a viable alternative for fixation of high level nuclear waste (HLW), in place of borosilicate glass. The results showed that all these elements could be incorporated in NZP at temperatures as low as 723 K by heating the reaction mixtures in a microwave heating system. Among the four elements introduced in NZP, except for Te, all others were retained nearly quantitatively in samples heated to 1273 K for three hours. The tellurium substituted NZP exhibited the maximum loss exceeding the amount of TeO2 added, which could probably be due to formation of some volatile compounds by TeO2 with the elements in the NZP matrix. Addition of Sr and Te simultaneously in NZP decreased the amount of TeO2 loss considerably.
Received: 2005-9-5
Accepted: 2006-1-18
Published Online: 2009-9-25
Published in Print: 2006-6-1
© by Oldenbourg Wissenschaftsverlag, München
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Articles in the same Issue
- Preface - Special Issue: NUCAR 2005
- Incomplete fusion mechanism in 16O + 93Nb reaction at 6 MeV/nucleon: Recoil range measurements
- Extraction of actinides using N, N, N′, N′-tetraoctyl diglycolamide (TODGA): a thermodynamic study
- Extraction of neptunium(IV) by a mixture of 3-phenyl-4-acetyl-5-isoxazolone and tri-n-octyl phosphine oxide
- Third phase formation in the extraction of Th(NO3)4 by tri-2-methyl butyl phosphate from nitric acid media
- Solvent extraction behaviour of some fission product elements with N,N-dihexyl octanamide and tri-n-butyl phosphate under simulated PUREX process conditions
- Transport of uranium from nitric acid solution by non-dispersive solvent extraction using a hollow fibre contactor
- Fixation of some major fission products in NaZr2P3O12 ceramic employing microwave heating
- Synthesis, characterization and structural refinement of polycrystalline uranium substituted zirconolite CaZr0.9U0.1Ti2O7
- Effect of glass composition on diffusion of cesium in borosilicate glass
- Studies on diffusional mobility and selectivity of I− ion in plasticized anion-exchange membrane using radiotracer
- BEHSA grafted polymer for selective extraction of U(VI), Th(IV) and La(III) from acidic matrices and environmental samples – a green process
- Studies on the dissolution behaviour of ThO2 and (U,Th)O2 by a solid state reaction method
- Studies on some divalent metal α-isosaccharinic acid complexes
- Effect of humic acid on cesium sorption on silica colloids
- Preparation and preliminary biological evaluation of a 177Lu labeled nitroimidazole derivative for possible use in targeted tumor therapy
