The influence of organic complexing agents upon the mobilization and migration of radionuclides from ILW contained in cement and bitumen under nearfield conditions for a repository in a salt dome
Within the frame of this project, the influence of the synthetic organic complexing agents dibutylphosphate, tributylphosphate, ethylenediamine-tetraacetic acid, citrate and oxalate on the solubilities, the migration and sorption behaviour of the elements iodine, caesium, uranium, neptunium, plutonium and americium was investigated in electrolyte solutions. This represents the conditions of the nearfield of a waste repository in a salt dome after a hypothetical intrusion of brines. The electrolyte solutions were saturated NaCl solution and Q-brine, which were equilibrated with corrosion products of the matrices Portland 35-F cement and bitumen (Shell Mexphalte R 80-100) before starting the experiments, in order to simulate their influence on the chemical behaviour of the solutions used for the experiments. The temperature at which the experiments were carried out was 298 K.
Bibliographic Reference: EUR 13883 EN (1992) 171 pp., FS, ECU 13.75
ISBN: ISBN 92-826-3472-8
Record Number: 199210364 / Last updated on: 1994-12-02
Original language: en
Available languages: en