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Nuclear waste immobilization into structure of zirconolite by Complex Sol Gel Process

Published online by Cambridge University Press:  17 June 2014

Tomasz Smoliński ,
Andrzej Deptuła ,
W. Lada ,
Tadeusz Olczak ,
Andrzej G. Chmielewski  and
Fabio Zaza
Tomasz Smoliński
Affiliation:
Institute of Nuclear Chemistry and Technology (INCT), 03-195 Warsaw, Poland
Andrzej Deptuła
Affiliation:
Institute of Nuclear Chemistry and Technology (INCT), 03-195 Warsaw, Poland
W. Lada
Affiliation:
Institute of Nuclear Chemistry and Technology (INCT), 03-195 Warsaw, Poland
Tadeusz Olczak
Affiliation:
Institute of Nuclear Chemistry and Technology (INCT), 03-195 Warsaw, Poland
Andrzej G. Chmielewski
Affiliation:
Institute of Nuclear Chemistry and Technology (INCT), 03-195 Warsaw, Poland
Fabio Zaza
Affiliation:
ENEA-Casaccia Research Centre, UTPRA-GEOC SP011,Via Anguillarese 301,00123 Rome Italy
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Abstract

Zirconolite (CaZrTi2O7) is one of the components of Synroc materials, which are regarded throughout the world nuclear as the second generation of high-level nuclear waste forms. The zirconolite phase was synthesized by a sol-gel method, with one variant of the method making use of ascorbic acid as a strong complexing agent. Into the structure of the zirconolite was incorporated 10 mol% Sr. Undoped and doped samples were examined by thermal analyses and X-ray diffraction. Addition of ascorbic acid to the sols lowered the firing temperature and promoted formation of the zirconolite phase.

Keywords

sol-gelTiwaste management
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1683: Symposium S – Actinides—Basic Science, Applications and Technology , 2014 , mrss14-1683-s04-05
Copyright
Copyright © Materials Research Society 2014 

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References

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