科研之友
微信
新浪微博
Facebook
分享链接
摘要
In this study, reactive solute transport experiments in porous media were carried out under different particle sizes (φ1.5-2.0, 2.5-3.0, and 3.5-4.0 mm) and flow rates (1.0, 1.5, and 2.0 mL/s). We used copper sulfate and disodium EDTA as bimolecular reactors and simulated their transport via image analysis. The incomplete mixing advection-dispersion reaction equation (IM-ADRE) based simulation and prediction of bimolecular reactive solute transport was investigated, and parameter sensitivity analysis was performed. The results showed that the concentration of color reactive solutes in porous media can be accurately obtained via image analysis. The determination coefficient between the gray value and concentration was greater than 0.96. The IM-ADRE model gave high accuracy predictions for bimolecular reactive solute transport in porous media under different conditions, with less than 3.71% relative errors. The change of experimental conditions had significant effects on parameters D, M and β0 of IM-ADRE model, indicating that the model parameters are dependent on the environmental conditions, and the dependency rules need to be further calibrated according to actual environmental conditions, which can help promoting IM-ADRE model applications. ? 2022, Editorial Office of Earth Science Frontiers. All right reserved.
- 单位
