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| Visible light photocatalytic system made by polymer matrix composites 3D printing for virus aerosol removal |
| KONG Ya-dong1, SHI Lei1, LIU Meng-meng2, ZHANG Wei1, CHENG Rong1, ZHENG Xiang1 |
1. School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China;
2. Department of Water Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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Abstract 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.
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Received: 12 March 2020
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