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Original Article

J Environ Health Sci. 2004; 30(2): 92-97

Published online June 30, 2004

Copyright © The Korean Society of Environmental Health.

Improvement of Indoor Air Quality by Coating of Indoor Materials of TiO2 Photocatalyst Sol

이산화티탄 광촉매 졸(sol)의 실내환경 코팅에 의한 실내공기질 개선

Won Ho Yang, Dae Won Kim, Moon Ho Chung, Jin Sup Yang, Ki Sun Park

양원호, 김대원, 정문호, 양진섭, 박기선

Abstract

Three methods for VOCs emissions control in indoor air are reduction at the source, ventilation between indoor and outdoor, and removal. The best alternative should be to replace highly emitting sources with sources having low emissions, but the pertinent information on VOCs is not always available from manufactures. Other ways of improving indoor air quality are needed. It is to increase the outside fresh-air flow to dilute the pollutants, but this method would generally provide only a dilution effect without destruction in residence. An ideal alternative to existing technologies would be a chemical oxidation process able to treat large volumes of slightly contaminated air at normal temperature without additional oxidant such as ozone generator and ion generator. Photocatalytic oxidation(PCO) represents such a process. It is characterized by a surface reaction assisted by light radiation inducing the formation of superoxide, hydroperoxide anions, or hydroxyl radicals, which are powerful oxidants. In comparison with other VOCs removal methods, PCO offers several advantages. The purpose of this study was to explore the possibilities for photocatalytic purification of slightly contaminated indoor air by using visible light such as flurescent visible light(FVL). In this study, a PCO of relatively concentrated benzene using common FVL lamps was investigated as batch type and total volatile organic compounds(TVOCs) using a common FVL lamp and penetrated sun light over window. The results of this study shown the possibility of TiO2 photocatalyst application in the area of indoor air quality control.

Keywordsindoor air quality, TiO2 photocatalyst, volatile organic compounds

The Korean Society of Environmental Health

Vol.48 No.5
October, 2022

pISSN 1738-4087
eISSN 2233-8616

Frequency: Bimonthly

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