Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 185: Issue 1
Kinetics of radionuclide interaction with suspended solids in modeling the migration of radionuclides in rivers
III. Variability of kinetic parameters
Authors:
P. Beneš Czech Technical University Department of Nuclear Chemistry Břehová 7 115 19 Prague 1 Czech Republic

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and
M. Černík Swiss Federal Institute of Technology (ETH) Institute of Terrestrial Ecology CH-8092 Zürich Switzerland

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Pages:
15–26
Online Publication Date:
13 Aug 2005
Publication Date:
17 Nov 1994
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02042948
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Abstract  

The effect of variable composition of water and suspended solids in a small river on the kinetics of uptake of58Co and137Cs by the solids has been analyzed using two kinetic models describing the uptake by two consecutive or parallel reactions. At first, experimental data on the kinetics were obtained by laboratory batch experiments with 6 samples of unfiltered water taken under different flow conditions. Then, parameters of the kinetic models were determined by computer fitting of the experimental data. After subtracting the effect of the concentration of the solids, the variability of the parameters due to the variable composition was determined. The results proved that despite the variability, the description of the kinetics by the two-step kinetic models is more accurate than that using a one-step kinetic model. Approximately equal accuracy of the description with both two-step kinetic models was ascertained. It is recommended that kinetic and equilibrium parameters of radionuclide uptake by suspended solids should always be determined by experiments with repeatedly sampled unfiltered water.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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