Colloid and Radionuclide Retardation (CRR) Results : Uptake Irreversible ?

Under the given experimental conditions, an evaluation of the reversibility of radionuclide sorption onto bentonite colloids cannot be done in situ. However, CRR laboratory desorption kinetic experiments indicate that both Cs and U indicate some degree of irreversibility, implying that, at least part, of the radionuclides could potentially migrate through fractures in the host rock, provided the colloids remain stable and mobile.

Further investigations on the reversibility of radionuclide sorption onto bentonite colloids are currently underway within CRR and the results will be added to the web page soon.

 

Colloid and Radionuclide Retardation Experiment - Results

The GTS underground facilities are also available to interested 3rd parties for underground testing and research. The GTS offers cost-effective access to a fully developed, well characterised underground research facility with round the year logistical support - please contact Dr. Ingo Blechschmidt, Head of the Grimsel Test Site, for further details.