Cel Tritium is one of the most hazardous beta emitters when contained in, and transported by water. The typical situations where this can occur are in subsurface radioactive waste repositories where there can be leakage of material. Recent research has suggested that clay minerals may inhibit the transport of tritium by their capacity to accumulate or exchange with tritium. This project is the first detailed experimental research project to evaluate the properties of clays for tritium retention, using repository sites in the Ukraine for test work.The project has the following verifiable aims:To study the tritium distribution and behaviour in clay minerals;To evaluate the ability of clay rocks and minerals to form natural barriers for the protection of the environment from tritium pollution.In order to achieve these aims, the work in the project has been divided into the following two phases:to quantify the distribution of tritium in clay minerals, involving theoretical and laboratory studies to determine the influence of clay structure on tritium distribution, the physic-chemical parameters of tritium uptake and release, adsorption capacity of clays, and a general classification of clay minerals in terms of tritium absorption;To evaluate the use of clays or clayey rocks as natural barriers in subsurface radioactive waste disposal sites, involving test work on the most suitable types of clays, to determine tritium accumulation and absorption capacity, to perform modification tests to enhance tritium uptake, and to give a final evaluation of the most suitable clays for use as natural barriers or geoliners.The project will lead to the following results:Quantification of the regularity of tritium distribution, accumulation and mobilisation in different clay minerals.An evaluation of the dependence of tritium mobility or fixation on the physic-chemical parameters in the clay rocks.In practical terms this will lead to a better understanding of the properties of clays needed to prevent tritium escape from repository sites. New sites can therefore be better located to take advantage of the natural properties of the clays, thereby giving a higher degree of protection to the local population and environment. Where no natural clay units can be found in the subsurface, a suitable clay layer can be included as a geoliner. Program(-y) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Temat(-y) 5 - Earth Sciences, Environment, Energy INTAS - INTAS Zaproszenie do składania wniosków Data not available System finansowania Data not available Koordynator University of Granada Wkład UE Brak danych Adres Avenida Fuentenueva s/n 18002 Granada Hiszpania Zobacz na mapie Koszt całkowity Brak danych Uczestnicy (4) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko National Academy of Sciences of Belarus Białoruś Wkład UE Brak danych Adres 7 Jodinskaja Str 220600 Minsk Zobacz na mapie Koszt całkowity Brak danych SELOR EEIG Niderlandy Wkład UE Brak danych Adres SAFFIERSTRAAT 101 C AMSTERDAM Zobacz na mapie Koszt całkowity Brak danych State Scientific Centre of Environmental Radiochemistry Ukraina Wkład UE Brak danych Adres 34 Palladin av. 252680 Kiev Zobacz na mapie Koszt całkowity Brak danych Ukrainian Scientific Research Institute of Ecological Problems Ukraina Wkład UE Brak danych Adres 6 Bakulina Str 61166 Kharkov Zobacz na mapie Koszt całkowity Brak danych
