One-dimensional non-isothermal diffusion model for organic pollutant in an unsaturated composite liner considering the degradation effect
文献类型：期刊论文
| 作者 | Jiang, Wenhao1,2; Ge, Shangqi3; Li, Jiangshan1,2 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 176页码:15 |
| 关键词 | Organic pollutant Unsaturated composite liner Non-isothermal diffusion Temperature-related parameter Degradation effect Numerical solution |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106807 |
| 英文摘要 | In this article, a one-dimensional non-isothermal diffusion model for organic pollutant in an unsaturated composite liner (comprising a geomembrane and an unsaturated compacted clay liner (CCL)) considering the degradation effect is established, which also includes the impacts of temperature on diffusion-related parameters, and employs a water content and pore-water pressure head relationship equation that better matches the experimental results. Subsequently, this model is addressed through a finite-difference technique, and its reasonableness is proved by comparing with the experiment measurements and two other calculation approaches. Following this, the analyses suggest that the diffusion coefficients' change induced by a rising temperature accelerates the diffusion rate, whereas such an alteration on partitioning coefficients has an opposite effect. Furthermore, the evaluation reveals that the non-isothermal state caused by an increasing upper temperature overall lowers the anti-fouling performance. The unsaturated composite liner's barrier function is weakened by an increment in residual water content of CCL, but enhanced by unsaturated layer thickness. It is also detected that the degradation effect should be considered if the degradation half-life <= 100 years. Lastly, a simplified approach for assessing the unsaturated composite liner's barrier performance is presented, which can provide guidance for its engineering design in a non-isothermal scenario. |
| 资助项目 | National Key Research and Development Program of China[2023YFC3707800] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001333788600001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42782]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Jiangshan |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Shandong Univ, Sch Civil Engn, Jinan 250061, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Wenhao,Ge, Shangqi,Li, Jiangshan. One-dimensional non-isothermal diffusion model for organic pollutant in an unsaturated composite liner considering the degradation effect[J]. COMPUTERS AND GEOTECHNICS,2024,176:15. |
| APA | Jiang, Wenhao,Ge, Shangqi,&Li, Jiangshan.(2024).One-dimensional non-isothermal diffusion model for organic pollutant in an unsaturated composite liner considering the degradation effect.COMPUTERS AND GEOTECHNICS,176,15. |
| MLA | Jiang, Wenhao,et al."One-dimensional non-isothermal diffusion model for organic pollutant in an unsaturated composite liner considering the degradation effect".COMPUTERS AND GEOTECHNICS 176(2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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