Performance of an air purifier using a MnOx/TiO2 catalyst-coated filter for the decomposition of aldehydes, VOCs and ozone: An experimental study in an actual smoking room
Performance of an air purifier using a MnOx/TiO2 catalyst-coated filter for the decomposition of aldehydes, VOCs and ozone: An experimental study in an actual smoking room
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DOI：
10.1016/j.buildenv.2020.107247
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发表时间：
2020-12-01
影响因子：
7.4
通讯作者：
Jurng, Jongsoo
中科院分区：
文献类型：
--
作者：
Kim, Minsu;Jung, Hyounduk;Jurng, Jongsoo
为了研制吸烟室内空气净化器，本研究采用臭氧（O-3）分解锰催化剂，对烟草烟雾中的挥发性有机物（VOCs）进行氧化分解。在吸烟室内测得的总挥发性有机化合物（TVOCs）的实际浓度为- 2000 μ g(3)，甲苯、苯、乙醛的浓度也很高。以乙醛为目标材料，在室温（25℃）条件下，采用化学蒸汽冷凝（CVC）法合成了一种O-3氧化分解催化剂MnOx/TiO2 （MnOx/CVC-TiO2）。将催化剂包覆的过滤器安装为固定床，在提供浓度为25ppm的O-3后，证实催化剂促进了10ppm乙醛的完全分解。接下来，在1 m(3)的实验室内，使用采用催化剂包覆过滤器的原型烟雾净化器对TVOCs进行分解实验。TVOC的初始浓度为4300 μ g(3)，处理30 min后降至171 μ g(3)，处理效率为96%。最后，在61.9 m(3)的真实吸烟室内对实用型烟雾净化器的处理性能进行了测试。30 min后，TVOC浓度由2229降低至493 μ g(3)，去除率达80%。此外，-70%的乙醛浓度也被分解。
To develop an air purifier for a smoking room, an ozone (O-3) decomposition manganese catalyst, capable of the oxidative decomposition of the volatile organic compounds (VOCs) in tobacco smoke, was applied in this study. The actual concentration of the total VOCs (TVOCs) that was measured in a smoking room was -2,000 mu g m(3), toluene, benzene, and acetaldehyde were also obtained in high concentrations.An O-3 oxidative decomposition catalyst, MnOx/TiO2, synthesized by chemical vapor condensation (CVC) (MnOx/CVC-TiO2) was subjected to decomposition experiments, at room temperature (25 degrees C), utilizing acetaldehyde as the target material. The catalyst-coated filter was installed as a fixed bed, and after supplying O-3, at a concentration of 25 ppm, it was confirmed that the catalyst had facilitated the complete decomposition of 10 ppm of acetaldehyde. Next, a decomposition experiment was conducted for TVOCs with a prototype smoke purifier, which employed the catalyst-coated filter, in a 1-m(3) bench-scale chamber. The initial concentration of TVOC, 4,300 mu g m(3), was reduced to 171 mu g m(3) after 30 min (treatment efficiency, 96%). Finally, the treatment performance of the practical smoke purifier was tested in a real smoking room (61.9 m(3)). The initial TVOC concentration was reduced from 2,229 to 493 mu g m(3) after 30 min with a removal efficiency of 80%. Moreover,-70% of the acetaldehyde concentration was also decomposed.