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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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Autores principales: Wood, Joseph P., Magnuson, Matthew, Touati, Abderrahmane, Gilberry, Jerome, Sawyer, Jonathan, Chamberlain, Timothy, McDonald, Stella, Hook, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8483385/
https://www.ncbi.nlm.nih.gov/pubmed/34591869
http://dx.doi.org/10.1371/journal.pone.0257434
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author Wood, Joseph P.
Magnuson, Matthew
Touati, Abderrahmane
Gilberry, Jerome
Sawyer, Jonathan
Chamberlain, Timothy
McDonald, Stella
Hook, David
author_facet Wood, Joseph P.
Magnuson, Matthew
Touati, Abderrahmane
Gilberry, Jerome
Sawyer, Jonathan
Chamberlain, Timothy
McDonald, Stella
Hook, David
author_sort Wood, Joseph P.
collection PubMed
description 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.
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spelling pubmed-84833852021-10-01 Evaluation of electrostatic sprayers and foggers for the application of disinfectants in the era of SARS-CoV-2 Wood, Joseph P. Magnuson, Matthew Touati, Abderrahmane Gilberry, Jerome Sawyer, Jonathan Chamberlain, Timothy McDonald, Stella Hook, David PLoS One Research Article 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. Public Library of Science 2021-09-30 /pmc/articles/PMC8483385/ /pubmed/34591869 http://dx.doi.org/10.1371/journal.pone.0257434 Text en https://creativecommons.org/publicdomain/zero/1.0/This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 (https://creativecommons.org/publicdomain/zero/1.0/) public domain dedication.
spellingShingle Research Article
Wood, Joseph P.
Magnuson, Matthew
Touati, Abderrahmane
Gilberry, Jerome
Sawyer, Jonathan
Chamberlain, Timothy
McDonald, Stella
Hook, David
Evaluation of electrostatic sprayers and foggers for the application of disinfectants in the era of SARS-CoV-2
title Evaluation of electrostatic sprayers and foggers for the application of disinfectants in the era of SARS-CoV-2
title_full Evaluation of electrostatic sprayers and foggers for the application of disinfectants in the era of SARS-CoV-2
title_fullStr Evaluation of electrostatic sprayers and foggers for the application of disinfectants in the era of SARS-CoV-2
title_full_unstemmed Evaluation of electrostatic sprayers and foggers for the application of disinfectants in the era of SARS-CoV-2
title_short Evaluation of electrostatic sprayers and foggers for the application of disinfectants in the era of SARS-CoV-2
title_sort evaluation of electrostatic sprayers and foggers for the application of disinfectants in the era of sars-cov-2
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8483385/
https://www.ncbi.nlm.nih.gov/pubmed/34591869
http://dx.doi.org/10.1371/journal.pone.0257434
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