International Transaction Journal of Engineering,
Management, & Applied Sciences & Technologies

FEATURE PEER-REVIEWED ARTICLE

• PHOTOCATALYTIC METHOD OF DISINFECTION OF INDOR AREAS WITH INCREASED MICROBIAL CONTENT

  V.S. Shkrabak, E.I. Gavrikova, R.V. Shkrabak, Yu.N. Braginec, V.F. Bogatirev, A.P. Savelyev, O.A. Bykova (Department of Safety of Technological Processes and Production, St.Petersburg State Agrarian University, RUSSIA).
  

  Disciplinary: Microbiological Environmental Hygiene, Health Sciences.

  ➤ FullText

  DOI: 10.14456/ITJEMAST.2020.193

  Keywords: Agro-industrial complex; Microbial content; Indoor area disinfection; Photocatalytic disinfection; Piezoelectric ceramic element; Ultra-violet radiation.

  Abstract
  The great attention is paid to health protection of agricultural laborers specified with peculiarities of the social-economic level; the labor losses degree as well as determined with morbidity with a temporary disability, technical capacities availability, financial soundness, and some other factors. Sustained employment of agricultural laborers workplaces is with the increased microbial content induces the disease growth. It requires some measures on their health protection and promotion. In the capacity of the active substance for pathogenic microorganisms inactivation, we examined reactive oxygen species which generate photosensitizers at the photodynamic effect. Antimicrobial photodynamic disinfection is a relatively new direction in workplace air sanitation of the agro-industrial complex, but on its background, considering the research load devoted to this problem the effective disinfection methods can be developed. As a germicide, we used the composition based on furocoumarin and the exposure was carried out with near-UV radiation (UV radiation with wavelength 320-400 nm). The spraying and radiation were performed for 5-10 minutes per day within 15 days using the developed photocatalytic air cleaner. Before disinfection, we determined common microbial air impurity according to the original method, using the empirical graph dependence of electric conductivity of the thermostate solution of the nutrient medium with microorganisms from microorganisms number. From the experiment results, the decrease of general microbial content at the average of by four times was observed.
  
  

  Paper ID: 11A10J

  Cite this article:

  Shkrabak, V.S., Gavrikova, E.I., Shkrabak, R.V., Braginec, Yu.N., Bogatirev, V.F., Savelyev, A.P., Bykova, O.A. (2020). PHOTOCATALYTIC METHOD OF DISINFECTION OF INDOR AREAS WITH INCREASED MICROBIAL CONTENT. International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 11(10), 11A10J, 1-8.