Version 1
: Received: 22 November 2017 / Approved: 22 November 2017 / Online: 22 November 2017 (10:26:40 CET)
How to cite:
Liu, C.; Tseng, C.; Wang, H.; Dai, C.; Shih, Y. A Novel Approach of Ultraviolet Germicidal Irradiation to Reduce Air Pollution in Indoor Environments. Preprints2017, 2017110145. https://doi.org/10.20944/preprints201711.0145.v1
Liu, C.; Tseng, C.; Wang, H.; Dai, C.; Shih, Y. A Novel Approach of Ultraviolet Germicidal Irradiation to Reduce Air Pollution in Indoor Environments. Preprints 2017, 2017110145. https://doi.org/10.20944/preprints201711.0145.v1
Liu, C.; Tseng, C.; Wang, H.; Dai, C.; Shih, Y. A Novel Approach of Ultraviolet Germicidal Irradiation to Reduce Air Pollution in Indoor Environments. Preprints2017, 2017110145. https://doi.org/10.20944/preprints201711.0145.v1
APA Style
Liu, C., Tseng, C., Wang, H., Dai, C., & Shih, Y. (2017). A Novel Approach of Ultraviolet Germicidal Irradiation to Reduce Air Pollution in Indoor Environments. Preprints. https://doi.org/10.20944/preprints201711.0145.v1
Chicago/Turabian Style
Liu, C., Chuan-Fa Dai and Yi-Hsuan Shih. 2017 "A Novel Approach of Ultraviolet Germicidal Irradiation to Reduce Air Pollution in Indoor Environments" Preprints. https://doi.org/10.20944/preprints201711.0145.v1
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. We also estimated the emission of ozone as a secondary pollutant of UVGI as treatment. 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 among the various irradiation methods in this study regarding the removal of HCHO and TVOC; however significant differences were observed in the removal of bacteria and fungi.
Keywords
ultraviolet radiation; bioaerosol; formaldehyde; total volatile organic compounds; indoor air quality
Subject
Engineering, Chemical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
