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Effect of Water Saturation on the DiffusionAdsorption of 22Na and Cesium onto the Callovo-Oxfordian Claystones
Joint Authors
Savoye, Sébastien
Lefevre, Serge
Fayette, Agnès
Robinet, Jean-Charles
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-17
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
The diffusion and adsorption behaviors of sodium and cesium were investigated in the Callovo-Oxfordian claystones (France) under unsaturated conditions.
Through-, out-, and in-diffusion laboratory experiments were performed on intact and compacted samples.
These samples were partially saturated using an osmotic method for imposed suction up to 9 MPa.
This specific technique enabled us to obtain water saturation degree ranging from 81% to 100% for intact samples and from 70% to 100% for compacted materials.
The results showed a very low impact of water saturation on the extent of adsorption for 22Na and cesium, onto intact and compacted materials.
Such observations suggest that the saturation degrees were not low enough to limit the access of cations to adsorption sites on clay surfaces.
At full saturation, enhanced diffusion for 22Na and cesium was clearly evidenced onto intact and compacted samples.
Under unsaturated conditions, the diffusion behavior for Cs and 22Na was not only slower but also distinct as compared to fully saturated samples.
For the intact rock and under suction of 1.9 MPa, the Cs diffusivity was reduced by a factor of 17, whereas for sodium, it was reduced by a factor of 5.
Explanation was then proposed to explain such a difference.
American Psychological Association (APA)
Savoye, Sébastien& Lefevre, Serge& Fayette, Agnès& Robinet, Jean-Charles. 2017. Effect of Water Saturation on the DiffusionAdsorption of 22Na and Cesium onto the Callovo-Oxfordian Claystones. Geofluids،Vol. 2017, no. 2017, pp.1-17.
https://search.emarefa.net/detail/BIM-1155319
Modern Language Association (MLA)
Savoye, Sébastien…[et al.]. Effect of Water Saturation on the DiffusionAdsorption of 22Na and Cesium onto the Callovo-Oxfordian Claystones. Geofluids No. 2017 (2017), pp.1-17.
https://search.emarefa.net/detail/BIM-1155319
American Medical Association (AMA)
Savoye, Sébastien& Lefevre, Serge& Fayette, Agnès& Robinet, Jean-Charles. Effect of Water Saturation on the DiffusionAdsorption of 22Na and Cesium onto the Callovo-Oxfordian Claystones. Geofluids. 2017. Vol. 2017, no. 2017, pp.1-17.
https://search.emarefa.net/detail/BIM-1155319
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1155319