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Chemosphere

Title:		Heterogeneous photocatalysis of aromatic and chlorinated volatile organic compounds (VOCs) for non-occupational indoor air application
Author(s):		Jo WK; Park KH;
Address:		"Department of Environmental Engineering, Kyungpook National University, 1370 Sankeok-dong, Bukgu, Daegu 702-701, South Korea. wkjo@knu.ac.kr"
Journal Title:		Chemosphere
Year:		2004
Volume:		57
Issue:		7
Page Number:		555 - 565
DOI:		10.1016/j.chemosphere.2004.08.018
ISSN/ISBN:		0045-6535 (Print) 0045-6535 (Linking)
Abstract:		"The current study evaluated the technical feasibility of applying TiO2 photocatalysis to the removal of low-ppb concentrations of volatile organic compounds (VOCs) commonly associated with non-occupational indoor air quality issues. A series of experiments was conducted to evaluate five parameters (relative humidity (RH), hydraulic diameter (HD), feeding type (FT) for VOCs, photocatalytic oxidation (PCO) reactor material (RM), and inlet port size (IPS) of PCO reactor) in relation to the PCO destruction efficiencies of the selected target VOCs. None of the target VOCs exhibited any significant dependence on the RH, which is inconsistent with a previous study where, under conditions of low humidity and a ppm toluene inlet level, a drop in the PCO efficiency was reported with a decreasing humidity. However, the other four parameters (HD, RM, FT, and IPS) were found to be important for better VOC removal efficiencies as regards the application of TiO2 photocatalytic technology for cleansing non-occupational indoor air. The PCO destruction of VOCs at concentrations associated with non-occupational indoor air quality issues was up to nearly 100%, and the CO generated during PCO was a negligible addition to indoor CO levels. Accordingly, a PCO reactor would appear to be an important tool in the effort to improve non-occupational indoor air quality"
Keywords:		"Air Pollutants/*chemistry Air Pollution, Indoor/*prevention & control Catalysis Humidity Hydrocarbons, Aromatic/*chemistry Hydrocarbons, Chlorinated/*chemistry Kinetics Photochemistry/*methods Volatilization;"
Notes:		"MedlineJo, Wan-Kuen Park, Kun-Ho eng Comparative Study Research Support, Non-U.S. Gov't England 2004/10/19 Chemosphere. 2004 Nov; 57(7):555-65. doi: 10.1016/j.chemosphere.2004.08.018"