Experiment and Simulation of Non-Reactive Solute Transport in Porous Media
© 2021 National Ground Water Association.
| Veröffentlicht in: | Ground water. - 1979. - 60(2022), 3 vom: 01. Mai, Seite 330-343 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2022
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| Zugriff auf das übergeordnete Werk: | Ground water |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Solutions |
| Zusammenfassung: | © 2021 National Ground Water Association. To more accurately predict the migration behavior of pollutants in porous media, we conduct laboratory scale experiments and model simulation. Aniline (AN) is used in one-dimensional soil column experiments designed under various media and hydrodynamic conditions. The advection-dispersion equation (ADE) and the continuous-time random walk (CTRW) were used to simulate the breakthrough curves (BTCs) of the solute transport. The results show that the media and hydrodynamic conditions are two important factors affecting solute transport and are related to the degree of non-Fickian transport. The simulation results show that CTRW can more effectively describe the non-Fickian phenomenon in the solute transport process than ADE. The sensitive parameter in the CTRW simulation process is β , which can reflect the degree of non-Fickian diffusion in the solute transport. Understanding the relationship of β with velocity and media particle size is conducive to improving the reactive solute transport model. The results of this study provide a theoretical basis for better prediction of pollutant transport in groundwater |
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| Beschreibung: | Date Completed 06.05.2022 Date Revised 13.06.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1745-6584 |
| DOI: | 10.1111/gwat.13153 |