Evaluation of electrostatic sprayers and foggers for the application of disinfectants in the era of SARS-CoV-2

Although research has shown that the COVID-19 disease is most likely caused by airborne transmission of the SARS-CoV-2 virus, disinfection of potentially contaminated surfaces is also recommended to limit the spread of the disease. Use of electrostatic sprayers (ESS) and foggers to rapidly apply dis...

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Vydáno v:	PloS one Ročník 16; číslo 9; s. e0257434
Hlavní autoři:	Wood, Joseph P., Magnuson, Matthew, Touati, Abderrahmane, Gilberry, Jerome, Sawyer, Jonathan, Chamberlain, Timothy, McDonald, Stella, Hook, David
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States Public Library of Science 30.09.2021 Public Library of Science (PLoS)
Témata:	Antiseptics Control Coronaviruses COVID-19 COVID-19 - prevention & control Deposition Disease transmission Disinfectants Disinfectants - administration & dosage Disinfectants - pharmacology Disinfection Disinfection & disinfectants Disinfection - instrumentation Disinfection - methods Disinfection and disinfectants Droplets Electrostatic charge Electrostatics Engineering and Technology Environmental protection Epidemics Equipment Design Evaluation Humans Infection control Investigations Medicine and Health Sciences Methods Pandemics Parameters Pesticides Physical Sciences R&D Research & development SARS-CoV-2 - drug effects Severe acute respiratory syndrome Severe acute respiratory syndrome coronavirus 2 Size distribution Spray deposition Spray nozzles Sprayers Spraying Sprays Static Electricity Surface Properties - drug effects United States Viral diseases Viruses United States North Carolina United States > US
ISSN:	1932-6203, 1932-6203
On-line přístup:	Získat plný text
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Popis
Shrnutí:	Although research has shown that the COVID-19 disease is most likely caused by airborne transmission of the SARS-CoV-2 virus, disinfection of potentially contaminated surfaces is also recommended to limit the spread of the disease. Use of electrostatic sprayers (ESS) and foggers to rapidly apply disinfectants over large areas or to complex surfaces has emerged with the COVID-19 pandemic. ESSs are designed to impart an electrostatic charge to the spray droplets with the goal of increasing deposition of the droplets onto surfaces, thereby promoting more efficient use of the disinfectant. The purpose of this research was to evaluate several spray parameters for different types of sprayers and foggers, as they relate to the application of disinfectants. Some of the parameters evaluated included the spray droplet size distribution, the electrostatic charge, the ability of the spray to wrap around objects, and the loss of disinfectant chemical active ingredient due to the spray process. The results show that most of the devices evaluated for droplet size distribution had an average volume median diameter ≥ 40 microns, and that four out of the six ESS tested for charge/mass produced sprays of at least 0.1 mC/kg. A minimal wrap-around effect of the spray deposition onto a cylindrical object was observed. The loss of disinfectant active ingredient to the air due to spraying was minimal for the two disinfectants tested, and concurrently, the active ingredient concentrations of the liquid disinfectants sprayed and collected 3 feet (1 meter) away from the spray nozzle do not decrease.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 ObjectType-Article-2 ObjectType-Undefined-1 ObjectType-Feature-3 content type line 23 Competing Interests: The authors have declared that no competing interests exist.
ISSN:	1932-6203 1932-6203
DOI:	10.1371/journal.pone.0257434