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Comparative study of strontium adsorption on dioctahedral and trioctahedral smectites |
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| Authors: | M Galamboš M Osacký O Rosskopfová A Krajňák P Rajec |
| Institution: | 3. Faculty of Natural Sciences, Department of Nuclear Chemistry, Comenius University in Bratislava, Mlynská Dolina, 842 15, Bratislava, Slovak republic 1. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada 2. Faculty of Natural Sciences, Department of Geology of Mineral Deposits, Comenius University in Bratislava, Mlynská Dolina, 842 15, Bratislava, Slovak republic |
| Abstract: | Slovak bentonites characterized by good rheological, mineralogical and chemical stability are considered as suitable sealing barriers for construction of Slovak deep geological repository for high-level radioactive waste and spent nuclear fuel. There is several Slovak bentonite deposits, bentonites of which have appropriate adsorption properties meeting the geotechnical requirements for this type of barriers. Study of adsorption properties of bentonites (mainly smectites) is an essential step for developing the migration model long-lived corrosion and activation products, and fission products of uranium. Nuclear wastes contain the most important nuclear fission products, β-emitter 90Sr with long half-life, biological half-life and high mobility. The present paper investigates and compares the strontium adsorption properties of bentonites of different mineral composition consisted mainly of dioctahedral and trioctahedral smectites. |
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