混合基质3D打印可见光催化系统对病毒气溶胶的去除  

Visible light photocatalytic system made by polymer matrix composites 3D printing for virus aerosol removal.

作　　者：孔亚东 石磊[1] 柳蒙蒙[2] 张巍[1] 程荣[1] 郑祥[1] KONG Ya-dong;SHI Lei;LIU Meng-meng;ZHANG Wei;CHENG Rong;ZHENG Xiang(School of Environment&Natural Resources,Renmin University of China,Beijing 100872,China;Department of Water Pollution Control,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China)

机构地区：[1]中国人民大学环境学院,北京100872 [2]中国科学院生态环境研究中心水污染控制实验室,北京100085

出　　处：《中国环境科学》2020年第11期5055-5062,共8页China Environmental Science

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07102-002);国家自然科学基金(51778618)。

摘　　要：利用3D打印灵活可控的特点和复合材料混合打印的优势,将可见光响应的ZnO/g-C3N4催化剂掺入ABS塑料,利用3D打印制成催化剂均匀稳定分布的光催化系统,使用流体动力学仿真模拟对反应器结构进行优化设计,用于处理相对密闭的室内空间中的病毒气溶胶.结果表明,病毒气溶胶比细菌气溶胶具有更强的抗逆性,添加螺旋导流板可以显著提升反应器传质性能并有效改善系统光催化效果,以提高对病毒气溶胶的去除率.以商业LED灯为光源的螺旋式反应器对高浓度病毒气溶胶(MS2、PhiX174噬菌体)和细菌气溶胶(大肠杆菌)具有高效去除效果,在3.75min停留时间可以实现对气溶胶的完全去除.Take the advantage of design flexibility of polymer matrix composites 3D printing,the visible light-responsive ZnO/g-C3N4 catalyst was incorporated into ABS plastic to form a photocatalytic system with uniform and stable catalyst distribution.The reactor structure was optimized using Computational Fluid Dynamics simulation and the photocatalytic reactor was used to treat virus aerosols in relatively closed indoor areas.Results showed that viruses were more resistant than bacteria,and the addition of spiral baffles can increase the removal rate of virus aerosols,due to the significant improvement in the mass transfer performance of photocatalytic system.The spiral photocatalytic system can efficiently remove high-concentration virus(MS2,PhiX174phage)and bacterial(E.coli)aerosols with the help of commercial LED lights.Furthermore,photocatalytic system can remove virus aerosols and bacterial aerosols at a residence time of 3.75min.

关 键 词：3D打印 光催化反应器 模型病毒 病毒气溶胶 

分 类 号：X513[环境科学与工程—环境工程]