Mass Transfer-Promoted Fe^(2+)/Fe^(3+)Circulation Steered by 3D Flow-Through Co-Catalyst System Toward Sustainable Advanced Oxidation Processes  

作　　者：Weiyang Lv Hao Li Jinhui Wang Lixin Wang Zenglong Wu Yuge Wang Wenkai Song Wenkai Cheng Yuyuan Yao 

机构地区：[1]National Engineering Lab of Textile Fiber Materials and Processing Technology(Zhejiang),Zhejiang Sci-Tech University,Hangzhou 310018,China [2]Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing 312000,China [3]Jiangsu Ruiya Stirring Technology Co.,Ltd.,Yixing 214200,China

出　　处：《Engineering》2024年第5期264-275,共12页工程（英文）

基　　金：supported by National Natural Science Foundation of China(52003240);Zhejiang Provincial Natural Science Foundation of China(LQ21B070007);China Postdoctoral Science Foundation(2022M722818).

摘　　要：Realizing fast and continuous generation of reactive oxygen species(ROSs)via iron-based advanced oxidation processes(AOPs)is significant in the environmental and biological fields.However,current AOPs assisted by co-catalysts still suffer from the poor mass/electron transfer and non-durable promotion effect,giving rise to the sluggish Fe^(2+)/Fe^(3+)cycle and low dynamic concentration of Fe^(2+)for ROS production.Herein,we present a three-dimensional(3D)macroscale co-catalyst functionalized with molybdenum disulfide(MoS_(2))to achieve ultra-efficient Fe^(2+)regeneration(equilibrium Fe^(2+)ratio of 82.4%)and remarkable stability(more than 20 cycles)via a circulating flow-through process.Unlike the conventional batch-type reactor,experiments and computational fluid dynamics simulations demonstrate that the optimal utilization of the 3D active area under the flow-through mode,initiated by the convectionenhanced mass/charge transfer for Fe^(2+)reduction and then strengthened by MoS_(2)-induced flow rotation for sufficient reactant mixing,is crucial for oxidant activation and subsequent ROS generation.Strikingly,the flow-through co-catalytic system with superwetting capabilities can even tackle the intricate oily wastewater stabilized by different surfactants without the loss of pollutant degradation efficiency.Our findings highlight an innovative co-catalyst system design to expand the applicability of AOPs based technology,especially in large-scale complex wastewater treatment.

关 键 词：Advanced oxidation processes 3D co-catalyst Flow-through mode Enhanced mass transfer Complex wastewater treatment 

分 类 号：O643.36[理学—物理化学]