| For deep geological disposal of radioactive waste in clay, it is essential to consider the mobility of radionuclides. This proposal addresses the migration behaviour of radionuclides (U, Pu, Se and Am), identified as critical by Performance Assessment, in a reducing clay environment, with special emphasis on the role of the organic matter. Considerable attention is devoted to developing and demonstrating concepts describing radionuclide migration and the acquisition of the model parameters. An equal amount of effort is devoted to batch experiments, aimed at understanding the mechanisms behind the migration. |