Inactivation of MS2 Phage and Cryptosporidium parvum Oocysts Using UV-A from High-Intensity Light-Emitting Diode for Water Disinfection

DOI Web Site 被引用文献1件 参考文献22件
  • HASHIMOTO Atsushi
    Department of Life and Environmental Sciences, Prefectural University of Hiroshima, Japan
  • MAWATARI Kazuaki
    Institute of Health Sciences, University of Tokushima, Japan
  • KINOUCHI Yohsuke
    Institute of Technology and Sciences, University of Tokushima, Japan
  • AKUTAGAWA Masatake
    Institute of Technology and Sciences, University of Tokushima, Japan
  • OTA Naotomo
    Department of Civil Engineering, Anan National College of Technology, Japan
  • NISHIMURA Kazuyuki
    Department of Life and Environmental Sciences, Prefectural University of Hiroshima, Japan
  • HIRATA Tsuyoshi
    Department of Life and Environmental Sciences, Azabu University, Japan
  • TAKAHASHI Akira
    Institute of Health Sciences, University of Tokushima, Japan

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タイトル別名
  • Inactivation of MS2 Phage and <I>Cryptosporidium parvum</I> Oocysts Using UV-A from High-Intensity Light-Emitting Diode for Water Disinfection

抄録

In this study, high-intensity, UV-A (ranging from 360 to 370 nm, peak wavelength at 365 nm) produced by a light-emitting diode was used for the inactivation of MS2 phage and Cryptosporidium parvum oocyst. In the irradiation experiment with MS2 phage, approximately 44 and 65 J/cm2 of UV-A were required to obtain -2 and -3 log inactivations, respectively. The -2 and -3 log inactivations of Cryptosporidium oocysts required 338 and 508 J/cm2 UV-A, respectively, which were 7.7 - 7.8 times greater than those required for MS2 phage. The possibility that high-intensity UV-A irradiation can inactivate both protozoa and viruses (phage) was demonstrated in this study.

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