Transport of radionuclides in fresh water stream

The physico chemical and mineralogical properties of Esmailia canal bottom sediments (ICBS) showed that it is mainly silica (major) with some montmorillonite and kaolinite (minor). Sorption of the radionuclides by the ICBS was found to follow a three phase process; rapid, moderate and slow phase reaction. The reaction half life of each phase was calculated for the different isotopes studied. The sorption capacity for different size fractions has been calculated and the cumulative sorption capacity of all sizes have been compared with that of the natural bottom sediment. The sorption capacity varied with PH and increased linearly with carrier concentration according to the freundlich type of isotherm. measurements of the natural radioactivity level showed the presence of trace amounts of natural radionuclides in the ICBS environment