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Migration of Cs-137 and Co-60 in the Australian Arid Zone

Published online by Cambridge University Press:  21 March 2011

T.E. Payne ,
J.R. Harries  and
T. Itakura
T.E. Payne
Affiliation:
Australian Nuclear Science and Technology Organisation, PMB 1, Menai 2234, Australia
J.R. Harries
Affiliation:
Australian Nuclear Science and Technology Organisation, PMB 1, Menai 2234, Australia
T. Itakura
Affiliation:
Australian Nuclear Science and Technology Organisation, PMB 1, Menai 2234, Australia
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Abstract

Batch adsorption experiments with Cs-137 and Co-60 were undertaken using representative samples of geologic materials from the arid region that has been selected for an Australian low-level waste repository. The results indicate that the pH is the main factor affecting the adsorption of Co-60 but has little influence on the sorption of Cs-137. The ionic strength affects Cs sorption, with a decrease in Kd associated with higher ionic strength. Selective sorption sites on mica and illite control uptake of trace Cs, whereas the high total site availability of smectite is significant when the total Cs is higher (1 mmol/L). The effects of mineralogy on Cs sorption which were observed for these complex materials confirmed previous results reported for pure minerals.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 663: Symposium – Scientific Basis for Nuclear Waste management XXIV , 2000 , 1125
Copyright
Copyright © Materials Research Society 2001

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References

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