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Water retention curves of polymer-modified clays and the reuse of waste polymers

(2024)
Author
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(UGent) and (UGent)
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Project
Abstract
Bentonite-based hydraulic barriers are employed in geo-environmental applications owing to their low permeability. However, prolonged exposure to contaminants can elevate permeability, posing environmental risks. To address this challenge, UGent's Geotechnics lab developed HYPER-clay, a polymer-based bentonite with enhanced performance against aggressive solutions and thermal fluctuations. The change in thermal variations involved the change in moisture content, which is correlated to water retention curves. Consequently, water retention curves have been investigated for HYPER-clay and untreated clay, along with their corresponding geosynthetic clay liners, using contact and non-contact filter paper and dew-point-potentiometer tests. Additionally, a waste-based polymer has been identified and tested for incorporation into HYPER-clay production, due to economic and sustainability considerations. The results indicate that HYPER-clay and its geosynthetic clay liners exhibit superior water retention compared to untreated clay, in both deionized water and seawater. Moreover, the contact filter paper test was not found suitable for assessing the water retention curve of geosynthetic clay liners. Furthermore, waste polymer-based HYPER-clay outperformed untreated clay in impermeability to ionic solutions. In summary, HYPER-clay shows potential for environmental protection, with the incorporation of waste-based polymers contributing to sustainability.

Citation

Please use this url to cite or link to this publication:

MLA
Khan, Muhammad Khizar. Water Retention Curves of Polymer-Modified Clays and the Reuse of Waste Polymers. Ghent University. Faculty of Engineering and Architecture, 2024.
APA
Khan, M. K. (2024). Water retention curves of polymer-modified clays and the reuse of waste polymers. Ghent University. Faculty of Engineering and Architecture, Ghent, Belgium.
Chicago author-date
Khan, Muhammad Khizar. 2024. “Water Retention Curves of Polymer-Modified Clays and the Reuse of Waste Polymers.” Ghent, Belgium: Ghent University. Faculty of Engineering and Architecture.
Chicago author-date (all authors)
Khan, Muhammad Khizar. 2024. “Water Retention Curves of Polymer-Modified Clays and the Reuse of Waste Polymers.” Ghent, Belgium: Ghent University. Faculty of Engineering and Architecture.
Vancouver
1.
Khan MK. Water retention curves of polymer-modified clays and the reuse of waste polymers. [Ghent, Belgium]: Ghent University. Faculty of Engineering and Architecture; 2024.
IEEE
[1]
M. K. Khan, “Water retention curves of polymer-modified clays and the reuse of waste polymers,” Ghent University. Faculty of Engineering and Architecture, Ghent, Belgium, 2024.
@phdthesis{01HNWG7SN2J40F39BND1FB5PEY,
  abstract     = {{Bentonite-based hydraulic barriers are employed in geo-environmental applications owing to their low permeability. However, prolonged exposure to contaminants can elevate permeability, posing environmental risks. To address this challenge, UGent's Geotechnics lab developed HYPER-clay, a polymer-based bentonite with enhanced performance against aggressive solutions and thermal fluctuations. The change in thermal variations involved the change in moisture content, which is correlated to water retention curves. Consequently, water retention curves have been investigated for HYPER-clay and untreated clay, along with their corresponding geosynthetic clay liners, using contact and non-contact filter paper and dew-point-potentiometer tests. Additionally, a waste-based polymer has been identified and tested for incorporation into HYPER-clay production, due to economic and sustainability considerations. The results indicate that HYPER-clay and its geosynthetic clay liners exhibit superior water retention compared to untreated clay, in both deionized water and seawater. Moreover, the contact filter paper test was not found suitable for assessing the water retention curve of geosynthetic clay liners. Furthermore, waste polymer-based HYPER-clay outperformed untreated clay in impermeability to ionic solutions. In summary, HYPER-clay shows potential for environmental protection, with the incorporation of waste-based polymers contributing to sustainability.}},
  author       = {{Khan, Muhammad Khizar}},
  isbn         = {{9789463558051}},
  language     = {{eng}},
  pages        = {{var. p.}},
  publisher    = {{Ghent University. Faculty of Engineering and Architecture}},
  school       = {{Ghent University}},
  title        = {{Water retention curves of polymer-modified clays and the reuse of waste polymers}},
  year         = {{2024}},
}