The Dependency of Diffusion Coefficients and Geometric Factor on the Size of the Diffusing Molecule: Observations for Different Clay-Based Materials
Joint Authors
Littke, R.
Jacops, Elke
Aertsens, Marc
Maes, Norbert
Bruggeman, Christophe
Swennen, Rudy
Krooss, Bernd
Amann-Hildenbrand, Alexandra
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-27
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
In order to investigate in more detail the relation between the size of diffusing molecules and their diffusion coefficients (and geometric factors), diffusion experiments with gases of different size and tritiated water (HTO) have been performed on different clayey samples (Boom Clay, Eigenbilzen Sands, Opalinus Clay, Callovo-Oxfordian Clay, and bentonite with different dry densities).
We observed that, for unreactive gases in clayey materials, the effective diffusion coefficient varies with the size of the diffusing molecule and this variation can be described by an exponential or a power law function.
The variation of the geometric factor can also be described by an exponential function.
The observed experimental relations can be used to estimate diffusion coefficients; by measuring experimentally in clay the effective diffusion coefficient of two unreactive dissolved gases with a different size, the diffusion coefficients of other dissolved gases (with a size in between the two measured gases) can be estimated by using the fitted exponential relationship.
American Psychological Association (APA)
Jacops, Elke& Aertsens, Marc& Maes, Norbert& Bruggeman, Christophe& Swennen, Rudy& Krooss, Bernd…[et al.]. 2017. The Dependency of Diffusion Coefficients and Geometric Factor on the Size of the Diffusing Molecule: Observations for Different Clay-Based Materials. Geofluids،Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1155898
Modern Language Association (MLA)
Jacops, Elke…[et al.]. The Dependency of Diffusion Coefficients and Geometric Factor on the Size of the Diffusing Molecule: Observations for Different Clay-Based Materials. Geofluids No. 2017 (2017), pp.1-16.
https://search.emarefa.net/detail/BIM-1155898
American Medical Association (AMA)
Jacops, Elke& Aertsens, Marc& Maes, Norbert& Bruggeman, Christophe& Swennen, Rudy& Krooss, Bernd…[et al.]. The Dependency of Diffusion Coefficients and Geometric Factor on the Size of the Diffusing Molecule: Observations for Different Clay-Based Materials. Geofluids. 2017. Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1155898
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1155898