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Studies of the Effects of Degradation Products on the Sorption of Tin and Radium

Published online by Cambridge University Press:  28 February 2011

J.A. Berry ,
G.M.N. Baston ,
K.A. Bond ,
C.M. Linklater  and
N.J. Pilkington
J.A. Berry
Affiliation:
AEA Decommissioning and Radwaste, Harwell Laboratory, Oxfordshire, UK
G.M.N. Baston
Affiliation:
AEA Decommissioning and Radwaste, Harwell Laboratory, Oxfordshire, UK
K.A. Bond
Affiliation:
AEA Decommissioning and Radwaste, Harwell Laboratory, Oxfordshire, UK
C.M. Linklater
Affiliation:
AEA Decommissioning and Radwaste, Harwell Laboratory, Oxfordshire, UK
N.J. Pilkington
Affiliation:
AEA Decommissioning and Radwaste, Harwell Laboratory, Oxfordshire, UK
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Abstract

The effects on sorption on geological media caused by the presence of materials derived from a cementitious repository have been studied. This work includes an investigation of the influence of cellulosic degradation products on the sorption of tin and radium on London clay and Caithness flagstones and the sorption of radium as a function of calcium concentration.

Experimental conditions were chosen to simulate those expected close to a cementitious repository (pH=l1) and at the edge of the zone of migration of the calcium plume (pH=8). Work was carried out, (i) under baseline conditions in the absence of organic materials; (ii) with gluconate, acting as a well-characterized organic degradation product simulant; (iii) with authentic cellulosic degradation products.

This investigation has shown that the sorption of tin can be affected by the presence of cellulosic degradation products whereas the sorption of radium is little affected. The sorptive behaviour of radium is however strongly influenced by the calcium concentration.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 212: Symposium P – Scientific Basis for Nuclear Waste Management XIV , 1990 , 577
Copyright
Copyright © Materials Research Society 1991

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