Application of uv radiators for disinfection of air and surfaces in premises

Authors

  • О.О. Chernysh State Institution "O.M. Marzіeiev Institute for Public Health of the NAMSU", Kyiv Author
  • О.V. Surmasheva State Institution "O.M. Marzіeiev Institute for Public Health of the NAMSU", Kyiv Author
  • О.V. Molchanets State Institution "O.M. Marzіeiev Institute for Public Health of the NAMSU", Kyiv Author

DOI:

https://doi.org/10.32402/dovkil2021.04.034

Keywords:

ultraviolet radiation, antimicrobial effect, disinfection, total number of microorganisms, molds, surfaces, air

Abstract

Objective: We compared the antimicrobial efficacy of different types of UV radiators. Materials and methods: In the work, we used the ultraviolet radiators of various types and manufacturers recommended for disinfection of air and surfaces of the premises. The effectiveness of surface disinfection from the test microorganisms Staphylococcus aureus and Pseudomonas aeruginosa was established by the Regulations “Methods for testing disinfectants to assess their safety and effectiveness". We determined a total number of aerobic microorganisms and molds according to the State Pharmacopoeia of Ukraine 2.0, p. 2.6.12. Results: The efficacy of the use of ultraviolet radiation for disinfection of the surfaces with the most resistant representatives of gram-negative and gram-positive microorganisms using a portable "Individual ultraviolet irradiator ALED UVC-1W" for 1 min. was established. The disinfection effect was 4.02 lg for S. aureus and 4.08 lg for P. aeruginosa. The effective action of the bactericidal ultraviolet radiation with the use of open-type radiators (with louvers) "UV-BLAZE" was demonstrated. A decrease of the total number of microorganisms, including molds in the air, by a factor of 36 (room № 1) and 136 (room № 2) was noted. Disinfection of the surfaces in the premises for the similar indicators was 98.6% and 99.5%, respectively. A decrease in the level of microbiological air pollution in the premises, when using LED radiation with the open-type ALED T5NXXX UVC-5W-01 luminaires for a long period of time (8 hours), was noted. The disinfection efficacy was 77% for bacteria and 83.3% for fungi.

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References

1. Shining a Light on COVID-19. Nature Photonics. 2020. Vol. 14, Issue 6. P. 337. DOI: https://doi.org/10.1038/s41566-020-0650-9.

2. Buonanno M., Welch D., Shuryak I., Brenner D.J. Far-UVC Light (222 Nm) Efficiently and Safely Inactivates Airborne Human Coronaviruses. Sci. Rep. 2020. Vol. 10 (1). 10285. DOI: https://doi.org/10.1038/s41598-020-67211-2

3. Hiroki Kitagawa, Toshihito Nomura, Tanuza Nazmul, Norifumi Shigemoto, Takemasa Sakaguchi, Hiroki Ohge. Effectiveness of 222-nm Ultraviolet Light on Disinfecting SARS-CoV-2 Surface contamination.SAJIC. 2021. Vol. 49 (3). P. 299-301. DOI: https://doi.org/10.1016/j.ajic.2020.08.022

4. Raeiszade M., Adeli B. A Critical Review on Ultraviolet Disinfection Systems against COVID19 Outbreak: Applicability, Validation, and Safety Considerations. ACS Photonics. 2020. Vol. 7 (11). P. 2941-2951. DOI: https://doi.org/10.1021/acsphotonics.0c01245

5. Adeli B. Not If, But When: UV LED Beverage Disinfection. IUVA News. 2020. 10– 11. URL : https://uvsolutionsmag.com/articles/2020/not-if-but-when-uv-led-beverage-disinfection/

6. Martino V., Ochsner K., Peters P., Zitomer D.H., Mayer B.K. Virus and Bacteria Inactivation Using Ultraviolet Light-Emitting Diodes. Environmental Engineering Science. 2021. Vol. 38 (6). DOI: https://doi.org/10.1089/ees.2020.0092

7. Hull N.M., Linden K.G. Synergy of MS2 Disinfection by Sequential Exposure to Tailored UV Wavelengths. Water Res. 2018. Vol. 143. P. 292-300. DOI: https://doi.org/10.1016/j.watres.2018.06.017

8. Thurman R.B., Gerba C.P., Bitton G. The Molecular Mechanisms of Copper and Silver Ion Disinfection of Bacteria and Viruses. Crit. Rev. Environ. Control. 1989. Vol.18. P. 295-315. DOI: https://doi.org/10.1080/10643388909388351

9. Ahearn D.G., Simmons R.B., Switzer K.F., Ajello L., Pierson D.L. Colonization by Cladosporium Spp. of Painted Metal Surfaces Associated with Heating and Air Conditioning Systems. J. Ind. Microbiol. 1991. Vol. 8. P. 277. DOI: https://doi.org/ 10.1007/BF01576067

10. Про затвердження санітарно-протиепідемічних правил і норм використання ультрафіолетового бактерицидного випромінювання для знезараження повітря та дезінфекції поверхонь в приміщеннях закладів охорони здоров’я та установ/закладів надання соціальних послуг/соціального захисту населення : Наказ МОЗ України від 06.05.2021 № 882. Режим доступу : https://zakon.rada.gov.ua/laws/show/z0978-21#Text

11. Методы испытаний дезинфекционных средств для оценки их безопасности и эффективности : методические указания. Москва : МЗ РФ, 1998.

12. Методичні рекомендації щодо класифікації виробничих приміщень нестерильних лікарських засобів за допустимим вмістом мікроорганізмів та часток у повітрі. Про затвердження методичних рекомендацій щодо виконання санітарно-гігієнічних вимог та проведення мікробіологічного контролю у виробництві нестерильних лікарських засобів : наказ МОЗ України № 502 від 14.12.2001. Режим доступу : https://zakon.rada.gov.ua/rada/show/v0502282-01#Text

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Published

2022-01-14

Issue

Vol. 101 No. 4 (2021): No. 4 (101)

Section

HYGIENE OF RESIDENTIAL PREMISES

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How to Cite

Application of uv radiators for disinfection of air and surfaces in premises. (2022). Environment & Health, 101(4), 34-41. https://doi.org/10.32402/dovkil2021.04.034

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