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

The migration behaviour of the tri- and tetravalent actinides Am and Pu was strongly mediated by the bentonite colloids and recovery increased from 20-30 % in the absence of bentonite colloids, to about 60-80 % in the presence of bentonite colloids.

Batch experiments and the high content of Am and Pu bound to the added bentonite colloids in the injection cocktail clearly display uptake of at least these elements on the bentonite colloids. The breakthrough curves below show that the colloids, the tri- and tetravalent actinides and the Cs arrived slightly earlier than the "conservative" solute.

Colloid and Radionuclide Retardation Experiment (CRR) Is there radionuclide uptake on colloids ?

 

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.