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The Sorption of Polonium, Actinium and Protactinium Onto Geological Materials

Published online by Cambridge University Press:  10 February 2011

G. M. N. Baston ,
J. A. Berry ,
M. Brownsword ,
T. G. Heath ,
D. J. Ilett ,
R. McCrohon ,
C. J. Tweed  and
M. Yui
G. M. N. Baston
Affiliation:
AEA Technology plc, 220 Harwell, Didcot, Oxfordshire, UK
J. A. Berry
Affiliation:
AEA Technology plc, 220 Harwell, Didcot, Oxfordshire, UK
M. Brownsword
Affiliation:
AEA Technology plc, 220 Harwell, Didcot, Oxfordshire, UK
T. G. Heath
Affiliation:
AEA Technology plc, 220 Harwell, Didcot, Oxfordshire, UK
D. J. Ilett
Affiliation:
AEA Technology plc, 220 Harwell, Didcot, Oxfordshire, UK
R. McCrohon
Affiliation:
AEA Technology plc, 220 Harwell, Didcot, Oxfordshire, UK
C. J. Tweed
Affiliation:
AEA Technology plc, 220 Harwell, Didcot, Oxfordshire, UK
M. Yui
Affiliation:
Japan Nuclear Cycle Development Institute, Tokai Works, Ibaraki, Japan
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Abstract

This paper describes a combined experimental and modelling programme of generic sorption studies to increase confidence in the performance assessment for a potential highlevel radioactive waste repository in Japan. The sorption of polonium, actinium and protactinium onto geological materials has been investigated. Sorption of these radioelements onto bentonite, tuff and granodiorite from equilibrated de-ionised water was studied under reducing conditions at room temperature. In addition, the sorption of actinium and protactinium was investigated at 60°C. Thermodynamic chemical modelling was carried out to aid interpretation of the results.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 556: Symposium QQ – Scientific Basis for Nuclear Waste Management XXII , 1999 , 1107
Copyright
Copyright © Materials Research Society 1999

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References

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