Cesium transport in Czech compacted bentonite: Planar source and through diffusion methods evaluated considering non-linearity of sorption isotherm
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00370256" target="_blank" >RIV/68407700:21340/23:00370256 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.clay.2023.107150" target="_blank" >https://doi.org/10.1016/j.clay.2023.107150</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.clay.2023.107150" target="_blank" >10.1016/j.clay.2023.107150</a>
Alternative languages
Result language
angličtina
Original language name
Cesium transport in Czech compacted bentonite: Planar source and through diffusion methods evaluated considering non-linearity of sorption isotherm
Original language description
The aim of the presented study was to determine the influence of non-linear character of Cs sorption isotherm and dominant interlayer cation on the sorption and diffusion properties of the Czech compacted bentonite. Planar source and through diffusion experiments with Cs on the compacted bentonite were performed and evaluated by suitable methods accounting for the transient state of diffusion and the presence of separating filters. It was shown that the observed Cs concentration profiles can be appropriately simulated with the use of Langmuir isotherm. The fitted values of sorption parameters obtained from the evaluation of through diffusion experiments generally agreed with the values expected from the batch sorption experiments. The most important factor for the Cs diffusion was its total concentration in the experiment with Da values ranging from about 1⨯10-13 m2 ⋅s-1 at the Cs concentration 10-7 M to about 4⨯10- 12 m2 ⋅s-1 at the Cs concentration 10-3 M. The observed discrepancies between the experimental data and the standard model based on Fickian diffusion were explained by the application of dual transport model using so-called surface diffusion theory. The importance of surface diffusion in through diffusion experiments increased with increasing Cs total concentration, which indicates that this effect is probably connected to the ion exchange mechanism on layer sites of bentonite
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Clay Science
ISSN
0169-1317
e-ISSN
1872-9053
Volume of the periodical
245
Issue of the periodical within the volume
December
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
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UT code for WoS article
001096734500001
EID of the result in the Scopus database
2-s2.0-85173575278