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Sorption Kinetics of Uranium-238, Neptunium-237, Caesium-134, and Strontium-85 on a Glacial Deposit

Published online by Cambridge University Press:  10 February 2011

L.N. Moyes ,
D.J. Bunker ,
J.T. Smith ,
F.R. Livens ,
C.R. Hughes ,
J. Hilton ,
A. Braithwaite  and
S. Richardson
L.N. Moyes
Affiliation:
Dept. of Chemistry, University of Manchester, Manchester, M13 9PL, U.K., [email protected]
D.J. Bunker
Affiliation:
Dept. of Chemistry, University of Manchester, Manchester, M13 9PL, U.K.
J.T. Smith
Affiliation:
Dept. of Earth Sciences, University of Manchester, Manchester, M13 9PL, U.K.
F.R. Livens
Affiliation:
Dept. of Chemistry, University of Manchester, Manchester, M13 9PL, U.K.
C.R. Hughes
Affiliation:
Dept. of Earth Sciences, University of Manchester, Manchester, M13 9PL, U.K.
J. Hilton
Affiliation:
Institute of Freshwater Ecology, East Stoke, Wareham, BH20 6BB, U.K.
A. Braithwaite
Affiliation:
Institute of Freshwater Ecology, East Stoke, Wareham, BH20 6BB, U.K.
S. Richardson
Affiliation:
BNFL, Sellafield R&D, Seascale, Cumbria, CA20 1PG, U.K.
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Abstract

Batch sorption experiments have been used to assess the sorption behaviour of four radionuclides, important in the context of low-level waste disposal, on a glacial substrate. Data for sorption of 238U, 237Np, 134Cs and 85Sr are compared and agree well with independent studies. A series of well-established kinetic models have been used to describe the individual uptake mechanisms and rate parameters reported. Sorption occurs via both equilibrium and kinetically controlled pathways, with neptunium sorption being under kinetic control to the greatest extent.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 757
Copyright
Copyright © Materials Research Society 1998

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References

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