Measurement and modelling of calcium diffusion in a sandstone

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322360" target="_blank" >RIV/68407700:21110/18:00322360 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.5047613" target="_blank" >http://dx.doi.org/10.1063/1.5047613</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.5047613" target="_blank" >10.1063/1.5047613</a>

Result language
angličtina
Original language name
Measurement and modelling of calcium diffusion in a sandstone
Original language description
In the present study, we measured through-diffusion of calcium ions Ca2+ in aquatic solutions for a selected sandstone sample of porosity 27 % from the area of eastern Bohemia. The experiment was performed under laboratory conditions in a two-side plexiglass box at ambient temperature 20 ± 2 °C for a period of 264 hours. Calcium concentrations were analyzed chelatometrically. The experimental data were analyzed by the time-lag method and both the bulk and surface diffusion coefficients were estimated as Db = 3.65 x 10–9 m2s–1 and Ds = 3.22 x 10–10 m2s–1. In fact this is a maximal value that Ds attains, corresponding to about 0.6 % of the pore volume to be occupied by the surface diffusion of calcium. A strong sensitivity of the time-lag method for migrating particles with a slightly non-linear adsorption isotherm is pointed out.
Czech name
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Czech description
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Project
<a href="/en/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Cumulative time dependent processes in building materials and structures</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
THERMOPHYSICS 2018: 23rd International Meeting of Thermophysics 2018
ISBN
9780735417045
ISSN
0094-243X
e-ISSN
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Number of pages
4
Pages from-to
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Publisher name
AIP Publishing, APL, the American Institute of Physics
Place of publication
Melville, NY
Event location
Smolenice
Event date
Nov 7, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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