Next Article in Journal
Erratum: Xue, C., et al. Characterization and Sorptivity of the Plesiomonas shigelloides Strain and Its Potential Use to Remove Cd2+ from Wastewater. Water 2016, 8, 241
Previous Article in Journal
Acknowledgement to Reviewers of Water in 2016
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Water 2017, 9(1), 46; doi:10.3390/w9010046

UV-LEDs Efficiently Inactivate DNA and RNA Coliphages

1
Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI 70211 Kuopio, Finland
2
Department of Biology, College of Sciences for Women, University of Baghdad, 10071 Baghdad, Iraq
*
Author to whom correspondence should be addressed.
Academic Editor: Vincenzo Naddeo
Received: 29 September 2016 / Revised: 28 December 2016 / Accepted: 5 January 2017 / Published: 12 January 2017
View Full-Text   |   Download PDF [1480 KB, uploaded 12 January 2017]   |  

Abstract

UV-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
Keywords: disinfection; DNA coliphages; Hg-UV; RNA coliphages; UV-LEDs; water disinfection; DNA coliphages; Hg-UV; RNA coliphages; UV-LEDs; water
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Zyara, A.M.; Heinonen-Tanski, H.; Veijalainen, A.-M.; Torvinen, E. UV-LEDs Efficiently Inactivate DNA and RNA Coliphages. Water 2017, 9, 46.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top