电絮凝是一种广泛应用的重金属废水处理技术。然而电絮凝过程中的钝化现象会阻碍阳极进一步溶解，从而显著降低处理效果、增加电能消耗、限制氢气的回收利用，已成为制约其进一步发展与应用的瓶颈问题。目前关于电絮凝钝化/破钝的机理仍未得到阐明，破钝的方式仍存在诸多不足。本项目拟采用响应面设计（RSM）、X射线光电子能谱（XPS）、X射线衍射（XRD）、计算流体力学（CFD）及多物理场（Multiphysics）模拟等手段，探究电絮凝过程中的钝化/破钝机理，建立多物理场与反应动力学的耦合模型，优化电絮凝反应器构型以及操作参数，防止或显著减少钝化现象的发生。

Electrocoagulation (EC) is one of the widely-used technologies for heavy metals wastewater treatment. Yet, its further application is hampered by passivation issues. In particular, the formation of an inhibiting layer on anode electrode prevents its continuous dissolution, decreases the removal efficiency, increases the power consumption and limits the recovery of hydrogen. Additionally, the mechanism of passivation/depassivation is still unclear and the depassivation ways still exist many deficiencies. Here, the present project is planned to use the response surface methodology experimental design (RSM), electrochemical analysis, x-ray photoelectron spectroscopy (XPS), x-ray diffraction (XRD), computational fluid dynamics (CFD) and multiphysics (Multiphysics) to systematically reveal the mechanism of the passivation/depassivation and further to optimize the reactor configuration and operating parameters by coupling multiphysics and reaction kinetics to prevent or significantly decrease the passivation in EC process.