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The Effect of Temperature on the Sorption of Technetium, Uranium, Neptunium and Curium on Bentonite, Tuff and Granodiorite

Published online by Cambridge University Press:  03 September 2012

G M N Baston ,
J A Berry ,
M Brownsword ,
T G Heath ,
D J Blett ,
C J Tweed  and
M Yui
G M N Baston
Affiliation:
AEA Technology pic, 220 Harwell, Didcot, Oxfordshire, UK
J A Berry
Affiliation:
AEA Technology pic, 220 Harwell, Didcot, Oxfordshire, UK
M Brownsword
Affiliation:
AEA Technology pic, 220 Harwell, Didcot, Oxfordshire, UK
T G Heath
Affiliation:
AEA Technology pic, 220 Harwell, Didcot, Oxfordshire, UK
D J Blett
Affiliation:
AEA Technology pic, 220 Harwell, Didcot, Oxfordshire, UK
C J Tweed
Affiliation:
AEA Technology pic, 220 Harwell, Didcot, Oxfordshire, UK
M Yui
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, Tokai Works, Ibaraki, Japan
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Abstract

A study of the sorption of the radioelements: technetium; uranium; neptunium; and curium onto geological materials has been carried out as part of the PNC programme to increase confidence in the performance assessment for a high-level radioactive waste repository in Japan. Batch sorption experiments have been performed in order to study the sorption of the radioelements onto bentonite, tuff and granodiorite from equilibrated de-ionised water under strongly-reducing conditions at both room temperature and at 60°C.

Mathematical modelling using the geochemical speciation program HARPHRQ in conjunction with the HATCHES database has been undertaken in order to interpret the experimental results.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 465: Symposium II – Scienfific Basis for Nuclear Waste Management XX , 1996 , 805
Copyright
Copyright © Materials Research Society 1997

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References

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