Research activities of the Isotope Group

At the time of foundation of the Laboratory, the physico-chemical properties of carrier-free radioisotopes and their separation was the basic field of research. Certain environmental aspects, in particular the diffusion and sorption of radon were already investigated to some extent. The recent projects are based on these field. A significant improvement was the transfer from the artificial systems to the interactions of natural inorganic crystals and electrolyte solutions. The topic is indeed very broad and covers many projects which study interfacial processes in heterogeneous systems. Radiotracer techniques have been widely applied to investigate ion exchange and adsorption in soils, in particular on clay minerals. The chemical elements studied include many of those important either from nutritional or from environmental point of view. A new direction in this topic is associated with the problems related to the storage of low and medium level nuclear wastes. The sorption and migration of long lived fission products have recently been investigated in natural water/rock systems.

The main directions of research is the study of interfacial reaction of clay minerals, namely the adsorption and transformation of cation on the surface, the production of cation exchanged montmorillonite, the effect of organic substances on the sorption of cations, catalytic reactions on clay minerals.

The results of the theoretical research are used for the solution of practical problems as well. The applications of bentonite at Sajóbábony site have recently been studied. The interactions between radioactive isotopes and rocks, soils are studied, concerning the underground storage of nuclear wastes

Our favorite research fields are as follows

1. Interactions of metal ions, clay minerals and soils, the decontamination of soils

2. Interactions of clay minerals and organic substances

3. Adsorption and migration of radioactive isotopes in geological formations

4. Quantitative determination of weak beta isotopes with long life time in nuclear waste

Updated: 2019.01.10.

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