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Sorption of Pu(III-IV) Onto Tio2: A Preliminary Study

Published online by Cambridge University Press:  11 February 2011

M. Olsson ,
H. Nilsson ,
A. M. Jakobsson  and
Y. Albinsson
M. Olsson
Affiliation:
Nuclear Chemistry, Department of Materials and Surface Chemistry, Chalmers University of Technology SE-412 96 Göteborg, Sweden, e-mail: [email protected]
H. Nilsson
Affiliation:
Nuclear Chemistry, Department of Materials and Surface Chemistry, Chalmers University of Technology SE-412 96 Göteborg, Sweden, e-mail: [email protected]
A. M. Jakobsson
Affiliation:
Nuclear Chemistry, Department of Materials and Surface Chemistry, Chalmers University of Technology SE-412 96 Göteborg, Sweden, e-mail: [email protected]
Y. Albinsson
Affiliation:
Nuclear Chemistry, Department of Materials and Surface Chemistry, Chalmers University of Technology SE-412 96 Göteborg, Sweden, e-mail: [email protected]
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Abstract

A preliminary study of the sorption of reduced plutonium (III-IV) onto TiO2 has been done under anoxic conditions at varying pH and ionic strength. The first approach was to study tetravalent Pu, but the sorption decreases with time in this case. This is probably due to disproportionation of Pu(IV) at the TiO2 surface, which then acts as a catalyst. A further observation that supports this explanation is that the sorption of Pu(IV) onto the walls of the experimental equipment is in some cases higher than the sorption of (disproportioned) Pu onto the oxide.

Pu(III) sorption onto the oxide was also investigated and showed similarities with the previously investigated sorption of Pm(III) in a similar system.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 757: Symposium II – Scientific Basis for Nuclear Waste Management XXVI , 2002 , II11.1
Copyright
Copyright © Materials Research Society 2003

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References

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