Browse > Article

A Study on Sterilization Characteristics of Elliptical Reactor by Using Xenon Flashlamp and Photocatalyst  

Lee, Dong-Gil (부산대학 전자전기공학과)
Hong, Ji-Tae (부산대학 전자전기공학과)
Choi, Kyoung-Hwa (부산대학 생명과학과)
Cha, Jae-Ho (부산대학 생명과학과)
Kim, Hong-Ju (한국전기연구원)
Kim, Hee-Je (부산대학 전자전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.3, 2009 , pp. 559-565 More about this Journal
Abstract
In this paper, we invented a new and unique technique for the sterilization of Escherichia coli(E. coli) in polluted water. We applied a rich ultra-violet(UV) light from pulsed xenon flashlamp and photocatalyst(TiO2) to sterilize E. coli in polluted water. This method based on the use of UV light and photocatalyst is eco-friendly and does not cause secondary pollution. The proposed elliptical reactor is able to concentrate on quartz sleeve coated TiO2 or general quartz sleeve. The primary objective of our research was to determine the important parameters such as pulse repetition rate and input voltage and to know on the sterilizing efficiency of quartz sleeve coated TiO2 and general quartz sleeve. We obtained to achieve 99.999% sterilization in as little as 6 pulses at 800V in case of quartz sleeve coated Ti02, and 10 pulses at 800V in case of general quartz sleeve for 5 minutes. Although transmitted light of quartz sleeve coated TiO2 is deceased, the sterilizing efficiency is increased by 40% than general quartz sleeve. The reason of high sterilizing efficiency is that generated hydroxyl radical(OH) by photocatalyst and is able to concentrate light at a focus by using elliptical reactor.
Keywords
Xenon flashlamp; Elliptical reactor; Photocatalyst; Ultra-violet;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
연도 인용수 순위
1 이규환, 이상진, 이용재, 이동석, 'UV/TiO2 수처리 공정에서의 살균에 관한 연구', 강원대학교 산업기술연구소 논문집, Vol. 27, No. A, 2007
2 Ollis, D. F., Pelizzetti, E., and Serpone, N., 'Photocatalytio destruction of water contaminants', Environ. Sci. Technol., Vol. 25, No. 99, pp. 1522-1529, 1995
3 Bertani, G. 'STUDIES ON LYSOGENESIS I.: The Mode of Phage Liberation by Lysogenic Escherichia coli', J. Bacteriol., Vol. 62, Issue 3, 293-300, September 1951   PUBMED
4 Alexander Sadiku, Fundamentals of Electric Circuits, Mc Graw Hill, pp. 202-205. 1999
5 Jeffrey Brinker and Alan J. Hurd, 'Fundamentals of sol-gel dip-coating', Phys. III France 4 p.1231-1242, 1994   DOI   ScienceOn
6 Laroussi, M. Dobbs, F.C. Wei, Z. Doblin, M.A. Ball, L.G. Moreira, K.R. Dyer, F.F. Richardson, JP., 'Decontamination of Water by Excimer UV Radiation', IEEE Transactions on plasma science, Vol 30, No.4, August 2002   DOI   ScienceOn
7 박진구, 김호건, '친수 유리용 TiO2 박막 개발', J. Korea Ind. Eng. Chem, Vol. 13, No.1, pp. 104-108, February 2002
8 Matsunaga, T., Tomoda, R., Nakajima, T. and Wake, H., 'Photoelectrochemical sterilization of microbial cells by semiconductor powders', FEMS Microbiol. Lett., Vol. 29, Iss. 1-2, pp. 211-214, Jun 1985   DOI
9 김승민, 윤태관, 홍대일, 'TiO2 광촉매 활성에서 소성온도의 영향', 한국환경과학회지, Vol. 49, No.6, pp. 567-574, 2005
10 LeChevallier, M. W, Welch, N. J., and Smith, D. B., 'Coliform regrowth in drinking water', J Journal AWWA, Vol. 82, Iss. 11, pp. 74-86, November 1990
11 공병기, 장미경, 최창용, 나상권, 나재운, '졸-겔법에 의해 제조한 티타니아 졸의 살균 및 탈취 특성', J.Korea Ind. Eng. Chem, Vol. 15, No.6, pp. 681-685, October 2004
12 홍진관, '공조시스템에서 UV Ray의 조사 및 표면 살균 성능에 관한 실험적 연구', 설비공학논문집, Vol. 6, No, 3, pp. 250-257, 2004
13 Vanosdell, D. and Foarde, K., 2002, 'Defining the effectiveness of UV lamps installed in circulating air ductwork', Final Report ART -21CR/610-40030-01
14 김시욱, 이정섭, 정혜광, 박 열, 윤성명, 유진철, 이범규, 이인화, 박진열, 'UV-TiO2 광촉매 반응기를 이용한 미생물의 살균효과', 朝鮮大學校 環境硏究 第14卷 pp.125-137, 1998
15 Ha, H. and Anderson, M. A., 'Photo-catalytic degradation of formic acid via metal-supported titania', Johr. Env. Eng., Vol. 122, No.3, pp. 217-221, 1996   DOI