Removal of Indoor Volatile Organic Compounds
نویسندگان
چکیده
Volatile organic compounds (VOCs) and formaldehyde are ubiquitous in indoor environment. 16 Inhalation of VOCs can cause irritations, difficulty breathing, and nausea, and damage the central 17 nervous system as well as other organs. Formaldehyde is even a carcinogen. Removal of VOCs and 18 formaldehyde is thus critical to control indoor air quality (IAQ). Photocatalytic oxidation has been 19 demonstrated its feasibility to remove toxic VOCs and formaldehyde from indoor environment. The 20 technique is highly-chemical stable, inexpensive, poisonless, and capable of removing a wide varsity 21 of organics under light irradiation. In this paper, we review and summarize the traditional air cleaning 22 methods and current photocatalytic oxidation approaches in both of VOCs and formaldehyde 23 degradation in indoor environment. Influencing factors such as temperature, relative humidity, 24 deactivation and reactivations of the photocatalyst are discussed. Aspects on the application of the 25 photocatalytic technique to improve the IAQ are suggested. 26
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