A Numerical Study of Chemical Compatibility of GCLs
A series of COMSOL numerical models were established to study the chemical compatibility of GCLs (geosynthetic clay liner). The effect of chemistry on the mesoscopic structure and the hydraulic conductivity of GCLs was investigated. The factors, including the initial mobile porosity, the swelling ra...
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| Format: | Article |
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MDPI AG
2022-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/4/2182 |
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| author | Juan Hou Rui Sun Chen-Xi Chu Mpundu Karen Marem Nasser |
| author_facet | Juan Hou Rui Sun Chen-Xi Chu Mpundu Karen Marem Nasser |
| author_sort | Juan Hou |
| collection | DOAJ |
| description | A series of COMSOL numerical models were established to study the chemical compatibility of GCLs (geosynthetic clay liner). The effect of chemistry on the mesoscopic structure and the hydraulic conductivity of GCLs was investigated. The factors, including the initial mobile porosity, the swelling ratio, the pore size, and the ionic strength, were discussed as well. The mesoscopic mechanism of the physical and chemical processes of GCLs was explored by the COMSOL models. The hypothesis that the final mobile porosity and the final pore size are the key factors of the hydraulic conductivity of GCLs was proven by the simulation. Meanwhile, when the ionic strength increased from low to medium, the changes in pore size, mobile porosity, and hydraulic conductivity were obvious. However, when the ionic strength increased from medium to high, the changes of these parameters tended to be gentle, and the changes in hydraulic conductivity were not obvious. Moreover, a theoretical model considering the effect of the initial particle size, the initial mobile porosity, and the ionic strength was developed to predict the hydraulic conductivity of GCLs in a chemical solution. This theoretical model was verified by experimental data. A good agreement was obtained. |
| first_indexed | 2024-03-09T22:40:44Z |
| format | Article |
| id | doaj.art-89d1cfc83e6b4baaac50ae0f12c2f3f2 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T22:40:44Z |
| publishDate | 2022-02-01 |
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| series | Applied Sciences |
| spelling | doaj.art-89d1cfc83e6b4baaac50ae0f12c2f3f22023-11-23T18:40:36ZengMDPI AGApplied Sciences2076-34172022-02-01124218210.3390/app12042182A Numerical Study of Chemical Compatibility of GCLsJuan Hou0Rui Sun1Chen-Xi Chu2Mpundu Karen3Marem Nasser4School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, ChinaSchool of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, ChinaSchool of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, ChinaSchool of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, ChinaSchool of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, ChinaA series of COMSOL numerical models were established to study the chemical compatibility of GCLs (geosynthetic clay liner). The effect of chemistry on the mesoscopic structure and the hydraulic conductivity of GCLs was investigated. The factors, including the initial mobile porosity, the swelling ratio, the pore size, and the ionic strength, were discussed as well. The mesoscopic mechanism of the physical and chemical processes of GCLs was explored by the COMSOL models. The hypothesis that the final mobile porosity and the final pore size are the key factors of the hydraulic conductivity of GCLs was proven by the simulation. Meanwhile, when the ionic strength increased from low to medium, the changes in pore size, mobile porosity, and hydraulic conductivity were obvious. However, when the ionic strength increased from medium to high, the changes of these parameters tended to be gentle, and the changes in hydraulic conductivity were not obvious. Moreover, a theoretical model considering the effect of the initial particle size, the initial mobile porosity, and the ionic strength was developed to predict the hydraulic conductivity of GCLs in a chemical solution. This theoretical model was verified by experimental data. A good agreement was obtained.https://www.mdpi.com/2076-3417/12/4/2182chemistry compatibilityCOMSOLmesoscopic mechanismGCLshydraulic performance |
| spellingShingle | Juan Hou Rui Sun Chen-Xi Chu Mpundu Karen Marem Nasser A Numerical Study of Chemical Compatibility of GCLs Applied Sciences chemistry compatibility COMSOL mesoscopic mechanism GCLs hydraulic performance |
| title | A Numerical Study of Chemical Compatibility of GCLs |
| title_full | A Numerical Study of Chemical Compatibility of GCLs |
| title_fullStr | A Numerical Study of Chemical Compatibility of GCLs |
| title_full_unstemmed | A Numerical Study of Chemical Compatibility of GCLs |
| title_short | A Numerical Study of Chemical Compatibility of GCLs |
| title_sort | numerical study of chemical compatibility of gcls |
| topic | chemistry compatibility COMSOL mesoscopic mechanism GCLs hydraulic performance |
| url | https://www.mdpi.com/2076-3417/12/4/2182 |
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