caa a22 4500 469110295 CHVBK 20180323133108.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF02040713 doi (NATIONALLICENCE)springer-10.1007/BF02040713 Kinetics of radionuclide interaction with suspended solids in modeling the migration of radionuclides in rivers [Elektronische Daten] II. Effect of concentration of the solids and temperature [P. Beneš, M. Černík] The effects of concentration of the solid phase and of temperature on the kinetics of interaction of radionuclides with the solid phase suspended in river water were analyzed using two kinetic models describing the interaction by two parallel or consecutive reactions. At first the effect of concentration of the solid phase was theoretically described using four parameters and simple relations. Then kinetic curves were determined by laboratory experiments for the uptake of carrier-free58Co from river water on bottom sediment and on suspended solids of a small river. The curves were analyzed using the kinetic models by calculating the parameters through computer fitting to the experimental data. The parameters thus obtained depend on the concentration of solid phase in the predicted way. Some deviations from theory were due either to agglomeration of sediment particles at higher sediment concentratins or to experimental erros. Equal accuracy of description of the curves with both kinetic models was ascertained. Apart from the concentration of solid phase, the following factors are found to significantly affect the parameters: temperature (13 or 23 °C), properties of solid phase (sediment or suspended solids), sediment age and/or water composition. It is recommended that kinetic parameters suitable for modeling the migration of radionuclides in rivers be obtained by experiments on repeatedly taken samples of unfiltered river water. Akadùmiai Kiadó, 1992 Beneš P. Department of Nuclear Chemistry, Technical University of Prague, Břehová 7, 115 19, Prague 1, (ČSFR) aut Černík M. Department of Nuclear Chemistry, Technical University of Prague, Břehová 7, 115 19, Prague 1, (ČSFR) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 159/2(1992-06-01), 187-200 0236-5731 159:2<187 1992 159 10967 https://doi.org/10.1007/BF02040713 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02040713 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Beneš P. Department of Nuclear Chemistry, Technical University of Prague, Břehová 7, 115 19, Prague 1, (ČSFR) aut NATIONALLICENCE 700 1- Černík M. Department of Nuclear Chemistry, Technical University of Prague, Břehová 7, 115 19, Prague 1, (ČSFR) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 159/2(1992-06-01), 187-200 0236-5731 159:2<187 1992 159 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 469110228 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer