Membrane behavior of clay considering the effect of fixed charges
文献类型：期刊论文
| 作者 | Song, Zhaoyang2; Wei, Changfu3; Cai, Guoqing1; Zhang, Zhihong2; Du, Xiuli2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-01-15 |
| 卷号 | 856期号:-页码:- |
| ISSN号 | 0048-9697 |
| 关键词 | Geosynthetic clay liner Membrane efficiency Semipermeable membranes Containment Chemico-osmotic pressure |
| 英文摘要 | Membrane efficiency coefficient of clay is evaluated with considering the effect of fixed charges adsorbed on clay min-eral surfaces. By virtue of the concept of chemical potential, the ionic concentration of pore water is calculated. An equation is first proposed to calculate the Donnan osmotic pressure based on the activity of water (H2O), and then a new method is developed to determine the membrane efficiency coefficient, based on the theoretical chemo-osmotic pressure difference. The proposed method is used to calculate the membrane efficiency coefficients of geosynthetic clay liners (GCLs) with different bentonite contents and porosities under different KCl concentrations. The calculated results are compared to those of van't Hoff equation, showing that if skeletal deformation is excluded, the proposed model and van't Hoff equation with average ion concentration difference yield practically the same re-sults; if the deformation is considered, however, van't Hoff equation yields smaller membrane coefficients. |
| 学科主题 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000875183700002 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35135]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.School of Civil Engineering, Beijing Jiaotong University, Beijing, China 2.Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China |
| 推荐引用方式 GB/T 7714 | Song, Zhaoyang,Wei, Changfu,Cai, Guoqing,et al. Membrane behavior of clay considering the effect of fixed charges[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,856(-):-. |
| APA | Song, Zhaoyang,Wei, Changfu,Cai, Guoqing,Zhang, Zhihong,&Du, Xiuli.(2023).Membrane behavior of clay considering the effect of fixed charges.SCIENCE OF THE TOTAL ENVIRONMENT,856(-),-. |
| MLA | Song, Zhaoyang,et al."Membrane behavior of clay considering the effect of fixed charges".SCIENCE OF THE TOTAL ENVIRONMENT 856.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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