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Stability of NZP Waste Forms and their Application To ICCP Waste

Published online by Cambridge University Press:  26 February 2011

B. E. Scheetz ,
S. Komarneni ,
W. Fajun ,
L. J. Yang ,
M. Ollinen  and
R. Roy
B. E. Scheetz
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
S. Komarneni
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
W. Fajun
Affiliation:
Wuhan Institute of Building Materials, Department of Materials Science and Engineering, Wuhan, Hubei, China
L. J. Yang
Affiliation:
Reactor Engineering Research and Design Institute, P.O. Box 840, Beijing, China
M. Ollinen
Affiliation:
Royal Institute of Technology, Stockholm, Sweden
R. Roy
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
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Abstract

The crystal structure of NaZr2(PO4)3, (NZP), contains three distinct crystallographic sites which between them can readily accommodate the majority of elements that are present in high level nuclear waste. The applicability of this host phase to the immobilization of mixed zirconia/alumina waste from the Idaho Chemical Processing Plant (ICPP) was demonstrated. A waste form consisting of CaF2, a number of NZP phases and F-apatite was prepared and the results of leach testing reported. Detailed stability studies of the host sodium zirconium phosphate phase were also conducted as a function of temperature, pH and time.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 44: Symposium N – Scientific Basis for Nuclear Waste Management VIII , 1984 , 903
Copyright
Copyright © Materials Research Society 1985

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