The Study of an Ultraviolet Radiation Technique for Removal of the Indoor Air Volatile Organic Compounds and Bioaerosol

Chao-Yun Liu, Chao-Heng Tseng, Huang-Chin Wang, Chuan-Fa Dai and Yi-Hsuan Shih
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Chao-Yun Liu: Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 10608, Taiwan
Chao-Heng Tseng: Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 10608, Taiwan
Huang-Chin Wang: Union Professional Group of Architecture, Taipei 10608, Taiwan
Chuan-Fa Dai: Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 10608, Taiwan
Yi-Hsuan Shih: Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 10608, Taiwan

IJERPH, 2019, vol. 16, issue 14, 1-16

Abstract: This study examined the use of high dosages of ultraviolet germicidal irradiation (UVGI) (253.7 nm) to deal with various concentrations of air pollutants, such as formaldehyde (HCHO), total volatile organic compounds (TVOC), under various conditions of humidity. A number of irradiation methods were applied for various durations in field studies to examine the efficiency of removing HCHO, TVOC, bacteria, and fungi. The removal efficiency of air pollutants (HCHO and bacteria) through long-term exposure to UVGI appears to increase with time. The effects on TVOC and fungi concentration were insignificant in the first week; however, improvements were observed in the second week. No differences were observed regarding the removal of HCHO and TVOC among the various irradiation methods in this study; however significant differences were observed in the removal of bacteria and fungi.

Keywords: ultraviolet radiation; bioaerosol; formaldehyde; total volatile organic compounds; indoor air quality (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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