The potential of electrokinetic remediation technologies (EKR) for the removal of different contaminants from subsurface porous media has been increasingly recognized. Despite electrokinetic applications have shown promising results, quantitative understanding of such systems is still challenging due to the complex interplay between physical transport processes, electrostatic interactions, and geochemical reactions.

In this study, we perform a model-based analysis of electrokinetic transport in saturated porous media. We investigate the effects of: (i) Coulombic interactions between ions in the system mobilized by electromigration, (ii) reaction kinetics on the overall removal efficiency of a non-charged organic contaminant, and (iii) dimensionality and different electrode configurations. The results show that such effects play a major role on the performance of electrokinetic systems. The simulations illuminate the importance of microscopic processes, such as electrostatic interactions and ion-specific diffusivities, and their non-intuitive macroscopic impact on the delivery of charged amendments and on the efficiency of contaminant removal. The insights of this study are valuable to improve and optimize the design and the operational strategies of electrokinetic remediation systems.

电动修复技术（EKR）用于从地下多孔介质中去除不同污染物的潜力已得到越来越多的认可。尽管电动应用已显示出令人鼓舞的结果，但是由于物理传输过程，静电相互作用和地球化学反应之间的复杂相互作用，对此类系统的定量理解仍然具有挑战性。

在这项研究中，我们在饱和的多孔介质中进行基于模型的电动传输分析。我们研究以下方面的影响：（i）电迁移引起的系统中离子之间的库仑相互作用；（ii）反应动力学对不带电有机污染物的整体去除效率的影响；（iii）尺寸和不同的电极配置。结果表明，这种影响对电动系统的性能起着重要作用。这些模拟阐明了微观过程的重要性，例如静电相互作用和离子特异性扩散性，以及它们对带电荷的修饰物的传递和污染物去除效率的非直观的宏观影响。