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Fixation of high Level Solid Waste (HLSW) in a TiO2 Base Ceramic Matrix Provided with an Integrated Overpack

Published online by Cambridge University Press:  21 February 2011

Christof Bauer  and
Gerhard Ondracek
Christof Bauer
Affiliation:
Institut für Material- und Festkörperforschung, Kernforschungszentrum Karlsruhe and University Karlsruhe (TH), P.O.B. 3640, D-7500 karlsruhe 1
Gerhard Ondracek
Affiliation:
Institut für Material- und Festkörperforschung, Kernforschungszentrum Karlsruhe and University Karlsruhe (TH), P.O.B. 3640, D-7500 karlsruhe 1
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Extract

In the past years a lot of research work has been done in several countries to find a waste form capable of accommodating the wide variety of elements present in commercial high level waste (HLW) and which at the same time, has a higher leaching resistance than the currently favoured high level waste glass. The main problems arising from a product made up of different phases, each of them taking up a certain fraction of the HLW-elements into solid solution, are

1) the necessity of very intimate mixing of the HLW-elements and the inert additives because otherwise undesired highly leachable phases might be formed;

2) the detrimental effect transmutation of the radioactive elements will most probably have on the crystal structure in which they are present. Fracturing and loss of the low solubility of the products are likely to occur.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 15: Symposium D – Scientific Basis for Nuclear Waste Management VI , 1982 , 71
Copyright
Copyright © Materials Research Society 1983

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References

REFERENCES

1. Fullam, H.T. and Shiens, W.E. in: Scientific Basis for Nulcear Waste Management, Moore, J.G. ed. (Plenum Press, New York 1981) pp. 531–538.Google Scholar
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3. Dix, S. et al. , in:Proceedings of the International Seminar on Chemistry and Process Engineering for High-Level Liquid Waste Solidification, Jül-Conf.-42 (1981).Google Scholar
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