Transport of heavy metal contaminants in a composite liner under non-isothermal condition
文献类型：期刊论文
| 作者 | Jiang, W.; Ge, S.; Feng, C.; Li, J. |
| 刊名 | GEOSYNTHETICS INTERNATIONAL
 |
| 出版日期 | 2023-04-16 |
| 关键词 | Geoenvironment Geosynthetics Heavy metal contaminants Triple-layer composite liner Transport Defective geomembrane Thermal effects Landfills Langmuir adsorption |
| ISSN号 | 1072-6349 |
| 英文摘要 | A mathematical model for the transport of heavy metal contaminants (HMCs) in a triple-layer composite liner with defective geomembrane under the non-isothermal condition is developed in this study, where the GMB/GCL/CCL (geomembrane, geosynthetic clay liner and compacted clay liner) composite liner is adopted as an example and the Langmuir adsorption model is incorporated. The proposed model is solved by the finite difference approach, and its correctness is validated by comparison with the experimental results, an existing analytical solution and another numerical method. Later, the transport behaviours of HMCs are explored with the established model. Compared with the isothermal condition, the non-isothermal condition enlarges the transport flux, but also reduces the concentration of HMCs. The relative concentration based on the Langmuir adsorption model is higher than that based on the linear adsorption model, which is related to the decrease of the retardation factor under the Langmuir adsorption model. Furthermore, the parametric study shows that when the leachate head h(t) is between 1.0 and 3.0 m, the defined breakthrough time t(b) increases by about 1.57 a with the increase of GCL thickness l(g) by 1 cm, and the t(b) increases by about 9.07 a with the increase of CCL thickness l(c) by 0.1 m. |
| 学科主题 | Engineering ; Geology ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001007371400001 |
| 出版者 | ICE PUBLISHING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35274]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; 2.Zhejiang University 3.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; |
| 推荐引用方式 GB/T 7714 | Jiang, W.,Ge, S.,Feng, C.,et al. Transport of heavy metal contaminants in a composite liner under non-isothermal condition[J]. GEOSYNTHETICS INTERNATIONAL,2023. |
| APA | Jiang, W.,Ge, S.,Feng, C.,&Li, J..(2023).Transport of heavy metal contaminants in a composite liner under non-isothermal condition.GEOSYNTHETICS INTERNATIONAL. |
| MLA | Jiang, W.,et al."Transport of heavy metal contaminants in a composite liner under non-isothermal condition".GEOSYNTHETICS INTERNATIONAL (2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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