UV-LEDs Efficiently Inactivate DNA and RNA Coliphages
AbstractUV-LEDs are a new method of disinfecting drinking water. Some viruses are very resistant to UV and the efficiency of UV-LEDs to disinfect them needs to be studied. Drinking water was disinfected with UV-LEDs after spiking the water with MS2 and four UV- and/or Cl-resistant coliphages belonging to RNA or DNA coliphages isolated from municipal wastewater. UV-LEDs operating at a wavelength of 270 nm for 2 min with 120 mW of irradiation caused 0.93–2.73 Log10-reductions of coliphages tested in a reactor of a 5.2 L volume. Irradiation time of 10 min in the same system increased the Log10-reductions to 4.30–5.16. Traditional mercury UV (Hg-UV) lamp at a 254 nm wavelength caused 0.67–4.08 Log10-reductions in 2 min and 4.56–7.21 Log10-reductions in 10 min in 10 mL of water. All coliphages tested except MS2 achieved 4 Log10-reductions with UV-LEDs at a dose that corresponded to 70 mWs/cm2 using Hg-UV. Thus, UV-LEDs are a promising method of disinfecting UV- and/or Cl-resistant viruses. View Full-Text
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Zyara, A.M.; Heinonen-Tanski, H.; Veijalainen, A.-M.; Torvinen, E. UV-LEDs Efficiently Inactivate DNA and RNA Coliphages. Water 2017, 9, 46.
Zyara AM, Heinonen-Tanski H, Veijalainen A-M, Torvinen E. UV-LEDs Efficiently Inactivate DNA and RNA Coliphages. Water. 2017; 9(1):46.Chicago/Turabian Style
Zyara, Alyaa M.; Heinonen-Tanski, Helvi; Veijalainen, Anna-Maria; Torvinen, Eila. 2017. "UV-LEDs Efficiently Inactivate DNA and RNA Coliphages." Water 9, no. 1: 46.
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