Environmental Engineering Research

  • 제13권1호
  • /
  • Pages.14-18
  • /
  • 2008
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  • 1226-1025(pISSN)
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  • 2005-968X(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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Gaseous by-products from the TiO2 Photocatalytic Oxidation of Benzene

  • Han, Sang-Wook (Department of Environmental Engineering, Chungnam National University) ;
  • Lee, Jin-Hong (Department of Environmental Engineering, Chungnam National University) ;
  • Kim, Jin-Seog (Chemical Metrology and Materials Evaluation Division, Korea Research Institute of Standards and Science) ;
  • Oh, Sang-Hyub (Chemical Metrology and Materials Evaluation Division, Korea Research Institute of Standards and Science) ;
  • Park, Young-Kwon (Department of Environmental Engineering, University of Seoul) ;
  • Kim, Hyun-Ook (Department of Environmental Engineering, University of Seoul)
  • 발행 : 2008.03.28
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초록

Photocatalytic oxidations of benzene gas using the closed system (batch reactor) were induced to determine its by-products and investigate the effect of humidity and oxygen concentration on their generation. The study was able to identify 11 gaseous by-products: 2-methylpropene, acetaldehyde, acetone, pentane, methylcyclobutane, methylcyclopentane, cyclohexane, 2,3-dimethylbutane, 2-methylpentane, 3-methylpentane, and hexane. All the by-products were saturated hydrocarbons, which are less toxic than benzene and were probably formed through hydrogenation reaction on the photocatalytic surface. The photocatalytic oxidation of benzene under higher humidity produced less by-products. However, the amount of acetone released increased with higher humidity and oxygen concentration.

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참고문헌

  1. USEPA, Total Exposure Assessment Methodology (TEAM) study, Report 600/6-87/002a (1987)
  2. Sillman, S., 'The Relation between Ozone, NOx and Hydrocarbons in urban and polluted rural environments,' Atmos. Environ., 33, 1821-1845 (1999) https://doi.org/10.1016/S1352-2310(98)00345-8
  3. Placet, M., Mann, C. O., Gilbert, R. O., and Niefer, M. J., 'Emissions of Ozone precursors from stationary sources: a critical review,' Atmos. Environ., 34, 2183-2204 (2000) https://doi.org/10.1016/S1352-2310(99)00464-1
  4. Jacoby, W. A., Blake, D. M., Fennell, J. A., Boulter, J. E., Vargo, L. M., George, M., C., and Dolberg, S. K., 'Heterogeneous photocatalysis for control of volatile organic compounds in indoor air,' Air & Waste Manage. Assoc., 46, 891-898 (1996) https://doi.org/10.1080/10473289.1996.10467525
  5. Hoffmann, M. R., Martin, S. T., Choi, W., and Bahnemann, D. W., 'Environmental applications of semiconductor photocatalysis,' Chem. Rev., 95, 69-96 (1995) https://doi.org/10.1021/cr00033a004
  6. Sitkiewitz, S., and Heller, A., 'Photocatalytic oxidation of benzene and satiric acid on sol-gel derived $TiO_2$ thin films attached to glass,' New J. Chem., 20, 233-241 (1996)
  7. Obee, T. N., and Brown, R. T., '$TiO_2$ Photocatalysis for indoor air applications: Effects of humidity and trace contaminant levels on the oxidation rates of formaldehyde, toluene, and 1,3-butadiene,' Environ. Sci. Technol., 29, 1223-1231 (1995) https://doi.org/10.1021/es00005a013
  8. Luo, Y., and Ollis, D. F., 'Heterogeneous photocatalytic oxidation of trichloroethylene and toluene mixtures in air: kinetic promotion and inhibition, time-dependent catalyst activity,' J., Catal., 163, 1-11 (1996) https://doi.org/10.1006/jcat.1996.0299
  9. Sauer, M. L., and Ollis, D. F., 'Photocatalyzed oxidation of ethanol and acetaldehyde in humidified air,' J., Catal., 158, 570-582 (1996) https://doi.org/10.1006/jcat.1996.0055
  10. Yoon, J. K., Kang, J. W., Lee, T. K., Jeon, M. S., and Joo, H. K., 'Photocatalytic degradation of trichloroethylene in gas phase using $TiO_2$/UV,' J. of Korea Society of Environmental Engineers, 21(5), 1003-1011(1999)
  11. Vorontsov, A. V., Savinov, E. N., Barannik, G. B., Troitsky, V. N., and Parmon, V. N., 'Quantitative studies on the heterogeneous gas-phase photooxidation of CO and simple VOCs by air over $TiO_2$,' Catal. Today, 39, 207-218 (1997) https://doi.org/10.1016/S0920-5861(97)00102-8
  12. Turchi, C. S., and Ollis, D. F., 'Mixed reactant photocatalysis : Intermediates and mutual rate inhibition,' J., Catal., 119, 483-496 (1989) https://doi.org/10.1016/0021-9517(89)90176-0
  13. d'Hennezel, O., Pichat, P., and Ollis, D. F., 'Benzene and toluene gas-phase photocatalytic degradation over $H_2O$ and HCl pretreated $TiO_2$: by-products and mechanisms,' J., Photochem. Photobiol. A, 118, 197-204 (1998) https://doi.org/10.1016/S1010-6030(98)00366-9
  14. Budavari, S., O'Neil, M., J., Smith, A., and Heckelman, P. E., The Merck Index, Merck & Co., Inc., Rahway (1989)
  15. Mackinson, F. W., Occupational Health Guidelines for Chemical Hazards-DHHS (NIOSH) Publication, 1981, 1988, 1992, 1995, R. Scott Stricoff, Lawrence J. Partridge, Jr., and A. D. Little. Inc. (1995)

피인용 문헌

  1. Titanium Dioxide in gas-Phase Photocatalytic Oxidation of Aromatic and Heteroatom Organic Substances: Deactivation and Reactivation of Photocatalyst vol.50, pp.3, 2014, https://doi.org/10.1007/s11237-014-9358-6
  2. Photo-Catalytic Oxidation Technology for VOC Control: Evaluation and Risk Characterization of Intermediates of Benzene Degradation Adsorbed on Catalyst vol.33, pp.12, 2016, https://doi.org/10.1089/ees.2016.0109
  3. Utilization of Element-doping Titania-impregnated Granular Activated Carbon in a Plug-flow System for Removal of BTEX vol.4, pp.3, 2008, https://doi.org/10.5572/ajae.2010.4.3.177
  4. Effects of Molecular Properties on Adsorption of Six-Carbon VOCs by Activated Carbon in a Fixed Adsorber vol.6, pp.8, 2008, https://doi.org/10.1021/acsomega.0c06260