Community Research and Development Information Service - CORDIS


A number of EU Member States are engaged in post-closure radiological safety assessments to demonstrate the viability of their chosen waste disposal options. These assessments depend on reliable estimates of radionuclide migration from the repository to the surface environment which, in turn, are derived from computer-based models of contaminant release, transport and retardation. The verification of such models have formed the basis of the international Chemval project. The original project (1987-90) was concerned primarily with the verification of equilibrium models, including those which simulate aqueous speciation, solubility and aqueous transport. The second phase of Chemval (1991 to 1994) aimed to build on the earlier study by considering six discrete modelling and experimental programmes. This report gives extensive results of the areas investigated in Chemval 2 as follows: modelling the effects of elevated temperatures on groundwater chemistry; modelling the effects of high ionic strength on speciation and solubility; characterization and modelling of sorption processes; modelling of complexation by high molecular weight organics; simulation of trace metal co-precipitation; modelling of coupled chemical transport processes.

Additional information

Authors: READ D, WS Atkins Environment, Epsom (GB);FALCK W E (EDITORS), WS Atkins Environment, Epsom (GB)
Bibliographic Reference: EUR 16648 EN (1997) 653pp., FS, ECU 125.50
Availability: Available from the (2)
ISBN: ISBN 92-827-8988-8
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