An energy-efficient continuous flow-through electrochemical reactor (FT-ER) equipped with PbO filter anodes is designed and employed for electrochemical elimination towards herbicide diuron in the aquatic environment. Boosting performances, including substantially higher electrochemical mineralization kinetics and lower energy consumption, could be realized on the FT-ER compared with the traditional flow-by model. The effect of current density and flow rate on the degradation efficiency is also investigated. The glorious degradation kinetics could be ascribed to the large electrochemical surface area, strong generation power of reactive oxidants, and enhanced mass transfer process derived from the filter structure. Furthermore, we establish the computational fluid dynamics simulation to elucidate the dynamic flow behavior of the electrolyte, including fluid velocity and turbulent intensity distribution. The profound influence of FT-ER for the herbicide diuron removal stems from the homogenization of electrolyte flux and turbulence promoter of the filter structure. Finally, the continuous flow-through configuration exhibits excellent elimination performances, uniform fluid dynamics together with good stability. The filter anodes present a promising option for electrochemical treatment towards diverse organic pollutants in the aquatic environment and would be benefit to the evolution of cost-efficient electrochemical treatment techniques and reactors.

中文翻译：

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除草剂敌草隆在流通式电化学反应器上的电化学降解及CFD流体力学模拟


设计并采用配备 PbO 过滤阳极的节能连续流通式电化学反应器 (FT-ER)，用于水生环境中除草剂敌草隆的电化学消除。与传统的流过模型相比，FT-ER 可以实现更高的性能，包括显着更高的电化学矿化动力学和更低的能耗。还研究了电流密度和流速对降解效率的影响。出色的降解动力学可归因于较大的电化学表面积、活性氧化剂的强大生成能力以及源自过滤器结构的增强的传质过程。此外，我们建立了计算流体动力学模拟来阐明电解质的动态流动行为，包括流体速度和湍流强度分布。 FT-ER 对除草剂敌草隆去除的深远影响源于电解质通量的均匀化和过滤器结构的湍流促进剂。最后，连续流通配置表现出优异的消除性能、均匀的流体动力学以及良好的稳定性。过滤阳极为水生环境中多种有机污染物的电化学处理提供了一种有前景的选择，并将有利于经济高效的电化学处理技术和反应器的发展。