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J Air Waste Manag Assoc

Title:		Investigation of the Photocatalytic Oxidation of Low-Level Carbonyl Compounds
Author(s):		Stevens L; Lanning JA; Anderson LG; Jacoby WA; Chornet N;
Address:		"a Department of Chemistry and Center for Environmental Science , University of Colorado at Denver , Denver , Colorado , USA. b National Renewable Energy Laboratory , Golden , Colorado , USA"
Journal Title:		J Air Waste Manag Assoc
Year:		1998
Volume:		48
Issue:		10
Page Number:		979 - 984
DOI:		10.1080/10473289.1998.10463748
ISSN/ISBN:		2162-2906 (Electronic) 1096-2247 (Linking)
Abstract:		"Though the bulk of research involving photocatalytic oxidation (PCO) of volatile organic compounds (VOCs) has involved the remediation of pollutants at high inlet concentrations, there has been some implication that PCO can be used to reduce exposure to low concentrations of VOCs and improve the quality of indoor air. The high conversion rates previously reported for PCO of VOCs in the parts-per-million (ppm) range may not, however, be applicable to concentrations in the parts-per-billion (ppb) range that are more typical of indoor air quality (IAQ) issues. This paper reports on an examination of the operational characteristics of four PCO reactor designs used for the oxidation of VOCs in the ppb concentration range. Reactor efficiency is examined for three low molecular weight carbonyl compounds commonly associated with IAQ issues: formaldehyde, acetaldehyde, and acetone. The measured response is the destruction of carbonyl reac-tants. Variables include flow stream velocity and reactor residence time. Oxidation of carbonyl compounds is also examined as a function of ultraviolet (UV) radiation intensity. PCO of the formaldehyde and acetone was nearly 100% for all reactor designs. To assist comparison of the reactor designs, oxidation efficiency of trichloroethylene (TCE) was evaluated at inlet concentration in the parts-per-million by volume (ppmv) range"
Keywords:
Notes:		"PubMed-not-MEDLINEStevens, Lisa Lanning, John A Anderson, Larry G Jacoby, William A Chornet, Nicholas eng 1998/10/01 J Air Waste Manag Assoc. 1998 Oct; 48(10):979-984. doi: 10.1080/10473289.1998.10463748"