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This project examines the mechanisms of lixiviation in ion-exchange resins used in a coated form in thermo-setting resins. Three types of samples were used: small inactive samples containing boron and lithium (EDF tests), small active samples additionally loaded with 60Co and 137Cs (CEA tests) and two full-scale packages for comparison (CEA tests). Results show differences in element lixiviation speed depending on factors such as pH, demineralised water, water with EDTA (for 60Co), uncoated IERs (if V/S was about 0.033 cm) and V/S report. As far as the two radionuclides are concerned, three factors are particularly important: the nature of the lixiviating agent (saline load), the pH of the agent and the presence of a complexing agent (for 60Co). Small loaded samples give higher values than the full-scale packages. The optimal mass to be collected for analysis in order to measure the initial activity and the initial chemical composition of the coated samples was determined to be about 10 g.

Additional information

Authors: SAAS A, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);GIRARD J, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: EUR 13557 EN (1991) 111 pp., FS, ECU 10
Availability: (2)
ISBN: ISBN 92-826-2024-7
Record Number: 199111035 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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