DOI QR코드

DOI QR Code

Removing Malodor Using Photocatalyst and Infrared

광촉매와 적외선을 이용한 악취저감

  • Jeon, Tae-Yeong (Department of Environmental Engineering, Chungbuk National University) ;
  • Kim, Jae-Yong (Department of Environmental Engineering, Chungbuk National University)
  • Received : 2014.08.05
  • Accepted : 2014.08.25
  • Published : 2014.08.31

Abstract

Recently, people interest in environmental pollution and attempt to improve the indoor air quality contaminated with various pollutants since it is very important to construct healthy and comfortable living environment. In the current study, we used the technology that has first received the certification of green technology for improving the removal efficiency of malodor causing substances. This green technology is a new technology to increase the reactivity of the odorous substances with OH radicals for oxidation reaction by using an infrared lamp in the existing air purification system. Comparing the efficiency of the green technology with the infrared lamp to that of the existing technology of air cleaner, there was a difference in the decomposition efficiency depending on the initial concentrations and speciation of the odorous substances. The removal efficiencies of contaminants were enhanced by 16.9 and 13.2% at low and high concentrations, respectively.

현재 사람들은 환경오염에 대한 관심이 많으며 각종 오염물질로 오염된 실내의 공기질을 향상시키고자 노력한다. 건강하고 쾌적한 생활환경을 조성하는 것은 매우 중요한 문제다. 본 연구에서는 공기정화분야에서 최초로 녹색기술 인증을 받은 기술을 사용하여 실내공기오염의 주범인 악취물질의 제거 효율을 향상시키고자 하였다. 이 녹색기술은 광촉매를 사용한 기존의 공기정화 시스템에 적외선램프를 사용하여 오염원인 물질들과 OH라디칼의 반응성을 높여 산화반응이 보다 쉽게 일어나도록 한 기술이다. 기존의 공기정화기와 비교하여 적외선램프를 부착한 녹색기술의 효율을 평가하였을 때, 오염원인물질의 초기 농도와 원인물질 종류에 따라 분해 효율의 차이가 나타났다. 저농도의 경우 16.9%의 제거효율 향상이 관찰되었고, 고농도의 경우 13.2%의 제거효율이 향상되었다.

Keywords

References

  1. Wakefield, S. E., Elliott, S. J., Cole, D. C. and Eyles, J. D., "Environmental risk and (re) action: air quality, health, and civic involvement in an urban industrial neighbourhood," Health Place, 7, 163-177(2001). https://doi.org/10.1016/S1353-8292(01)00006-5
  2. Pope III, C. A. and Dockery, D. W., "Health effects of fine particulate air pollution: lines that connect," J. Air Waste Manage. Assoc., 56, 709-742(2006). https://doi.org/10.1080/10473289.2006.10464485
  3. Bruce, N., Perez-Padilla, R. and Albalak, R., "Indoor air pollution in developing countries: a major environmental and public health challenge," Bullet. World Health Organizat., 78 (9), 1078-1092(2000).
  4. Alberici, R. M. and Jardim, W. F., "Photocatalytic destruction of VOCs in the gas-phase using titanium dioxide," Appl. Catal. B: Environ., 14, 55-68(1997). https://doi.org/10.1016/S0926-3373(97)00012-X
  5. Jung, K. C. and Hong, S. C., "A Study on Removal of VOC and Odor Using Ozone in Photocatalytic Reaction System," Appl. Chem. Eng., 14, 671-679(2003).
  6. Kim, J. R., Baek, S. W., and Ihm, S. K., "Study on the Adsorption/Desorption Characteristics of Several Molecular Sieves for the Control of Low Concentration VOC," J. Odor Indoor Environ., 5, 139-145(2006).
  7. Wold, A. "Photocatalytic properties of titanium dioxide ($TiO_2$)," Chem. Mater., 5, 282(1993).
  8. Fujishima, A., Rao, T. N. and Tryk, D. A., "Titanium dioxide photocatalysis," J. Photochem. Photobiol. C: Photochem. Rev., 1, 15(2000).
  9. Matthews, R. W., "Hydroxylation reactions induced by nearultraviolet photolysis of aqueous titanium dioxide suspensions," J. Chem. Soc. Faraday Transact. 1: Phys. Chem. Condensed Phases, 80, 457-471(1984).
  10. Hoffmann, M. R., Martin, S. T., Choi, W. and Bahnemann, D. W., "Environmental applications of Semiconductor photocatalsis," Chem. Rev., 95, 69-96(1995). https://doi.org/10.1021/cr00033a004
  11. Kleiser, G. and Frimmel, F. H., "Removal of precursors for disinfection by-products (DBPs)-differences between ozoneand OH-radical-induced oxidation," Sci. Total Environ., 256 (1), 1-9(2000). https://doi.org/10.1016/S0048-9697(00)00377-6
  12. Kim, H. J., Woo, Y. A. and Piepmeir, E. H., "Fundamental Investigation of Non-invasive Determination of Glucose by Near Infrared Spectrophotometry," Anal. Sci. Technol., 11, 1-6(1998).
  13. Choi, W. Y., "Invited Studies on $TiO_2$ Photocatalytic Reactions," Appl. Chem. Eng., 14(8), 1011-1022(2003).
  14. Glaze, W. H., Eckenfelder, W. W., Bowers, A. R. and Roth, J. A. "Chemical oxidation: Technologies for the nineties," Technomic Pub., Lancaster Basel, 3, 1(1993).