多孔碳电极增强电化学/臭氧耦合体系去除水中PPCPs机理研究

医药品与个人护理品（PPCPs）是一类广泛存在、能引起人体不良健康反应的有机污染物，难以生物降解和通过常规水处理工艺去除，即使微量也可能引起人类内分泌及生殖系统紊乱。此项研究基于水处理过程中单独电化学与单独臭氧氧化的局限性，探索多孔碳电极增强电化学与臭氧耦合体系去除水中低浓度PPCPs的新途径。尝试将网状玻璃态碳、活性碳/聚四氟乙烯、活性碳纤维、碳纳米管/聚四氟乙烯等多种多孔碳电极用于增强电化学/臭氧耦合体系的效能；采用循环伏安法等多种试验方法探索多孔碳电极增强电化学/臭氧耦合体系效能的作用机制和多孔碳材料物理化学性质与其增强体系效能的关系；并对该体系去除和降解水中典型PPCPs的效果、影响因素、反应途径及溴酸盐生成、急性毒性和可生化性的影响等进行研究，建立去除动力学模型。此项目的工作有助于加深对电化学/臭氧体系去除水中PPCPs机理的理解，对开发水处理新技术、积累知识储备具有重要意义。

Pharmaceutical and personal care products (PPCPs) are a diverse group of environmental chemicals that are difficult to be biodegraded and removed by conventional water treatment processes. Besides, they have potential risk for the endocrine and reproduction system of human body even with very low concentration. This research project is trying to probe a new approach for removing trace level of PPCPs from aqueous solution by porous carbon electrode for enhancing the coupling processes of electrochemical oxidation and ozonation. A series of porous carbon materials, including reticulated vitreous carbon (RVC), activated carbon/Polytetrafluoroethene (PTFE), active carbon fiber (ACF), and carbon nanotube (CNTs)/PTFE et al., are proposed as cathodes for increasing the efficiency of the coupling processes of electrochemical oxidation and ozonation. Then, the mechanism responsible for the results is also proposed to be investigated with various experimental methods. The relationship between the chemical and physical properties of porous carbon materials and the efficiency of the coupling processes of electrochemical oxidation and ozonation is proposed to be revealed. Moreover, the removal kinetic model, influence factors, reaction pathways, production of bromate, and the change of toxicity and biodegradability of three typical PPCPs by the combined process is planned to be studied. The outcome of the project will be beneficial for understanding the mechanisms of PPCPs removal by the coupling processes of electrochemical oxidation and ozonation. And this study has important theoretical value and practical significance for developing new water treatment technologies.