Numerical and experimental analyses for the improvement of surface instant decontamination technology through biocidal agent dispersion: Potential of application during pandemic

The transmission of SARS-CoV-2 through contact with contaminated surfaces or objects is an important form of transmissibility. Thus, in this study, we evaluated the performance of a disinfection chamber designed for instantaneous dispersion of the biocidal agent solution, in order to characterize a...

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Veröffentlicht in:PloS one 2021-05, Vol.16 (5), p.e0251817
Hauptverfasser: Freitas Neves, Paulo Roberto, Oliveira, Turan Dias, Magalhães, Tarcísio Faustino, Dos Reis, Paulo Roberto Santana, Tofaneli, Luzia Aparecida, Bandeira Santos, Alex Álisson, Machado, Bruna Aparecida Souza, Oliveira, Fabricia Oliveira, da Silva Andrade, Leone Peter Correia, Badaró, Roberto, Brêda Mascarenhas, Luis Alberto
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container_issue 5
container_start_page e0251817
container_title PloS one
container_volume 16
creator Freitas Neves, Paulo Roberto
Oliveira, Turan Dias
Magalhães, Tarcísio Faustino
Dos Reis, Paulo Roberto Santana
Tofaneli, Luzia Aparecida
Bandeira Santos, Alex Álisson
Machado, Bruna Aparecida Souza
Oliveira, Fabricia Oliveira
da Silva Andrade, Leone Peter Correia
Badaró, Roberto
Brêda Mascarenhas, Luis Alberto
description The transmission of SARS-CoV-2 through contact with contaminated surfaces or objects is an important form of transmissibility. Thus, in this study, we evaluated the performance of a disinfection chamber designed for instantaneous dispersion of the biocidal agent solution, in order to characterize a new device that can be used to protect individuals by reducing the transmissibility of the disease through contaminated surfaces. We proposed the necessary adjustments in the configuration to improve the dispersion on surfaces and the effectiveness of the developed equipment. Computational Fluid Dynamics (CFD) simulations of the present technology with a chamber having six nebulizer nozzles were performed and validated through qualitative and quantitative comparisons, and experimental tests were conducted using the method Water-Sensitive Paper (WSP), with an exposure to the biocidal agent for 10 and 30 s. After evaluation, a new passage procedure for the chamber with six nozzles and a new configuration of the disinfection chamber were proposed. In the chamber with six nozzles, a deficiency was identified in its central region, where the suspended droplet concentration was close to zero. However, with the new passage procedure, there was a significant increase in wettability of the surface. With the proposition of the chamber with 12 nozzles, the suspended droplet concentration in different regions increased, with an average increase of 266%. The experimental results of the new configuration proved that there was an increase in wettability at all times of exposure, and it was more significant for an exposure of 30 s. Additionally, even in different passage procedures, there were no significant differences in the results for an exposure of 10 s, thereby showing the effectiveness of the new configuration or improved spraying and wettability by the biocidal agent, as well as in minimizing the impact caused by human factor in the performance of the disinfection technology.
doi_str_mv 10.1371/journal.pone.0251817
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Medical Complete (Alumni)</collection><collection>Materials Science Database</collection><collection>Nursing &amp; Allied Health Database (Alumni Edition)</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>ProQuest Engineering Collection</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Engineering Database</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>Advanced Technologies &amp; Aerospace Database</collection><collection>ProQuest Advanced Technologies &amp; Aerospace Collection</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environmental Science Database</collection><collection>Materials Science Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Freitas Neves, Paulo Roberto</au><au>Oliveira, Turan Dias</au><au>Magalhães, Tarcísio Faustino</au><au>Dos Reis, Paulo Roberto Santana</au><au>Tofaneli, Luzia Aparecida</au><au>Bandeira Santos, Alex Álisson</au><au>Machado, Bruna Aparecida Souza</au><au>Oliveira, Fabricia Oliveira</au><au>da Silva Andrade, Leone Peter Correia</au><au>Badaró, Roberto</au><au>Brêda Mascarenhas, Luis Alberto</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Numerical and experimental analyses for the improvement of surface instant decontamination technology through biocidal agent dispersion: Potential of application during pandemic</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2021-05-19</date><risdate>2021</risdate><volume>16</volume><issue>5</issue><spage>e0251817</spage><pages>e0251817-</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>The transmission of SARS-CoV-2 through contact with contaminated surfaces or objects is an important form of transmissibility. Thus, in this study, we evaluated the performance of a disinfection chamber designed for instantaneous dispersion of the biocidal agent solution, in order to characterize a new device that can be used to protect individuals by reducing the transmissibility of the disease through contaminated surfaces. We proposed the necessary adjustments in the configuration to improve the dispersion on surfaces and the effectiveness of the developed equipment. Computational Fluid Dynamics (CFD) simulations of the present technology with a chamber having six nebulizer nozzles were performed and validated through qualitative and quantitative comparisons, and experimental tests were conducted using the method Water-Sensitive Paper (WSP), with an exposure to the biocidal agent for 10 and 30 s. After evaluation, a new passage procedure for the chamber with six nozzles and a new configuration of the disinfection chamber were proposed. In the chamber with six nozzles, a deficiency was identified in its central region, where the suspended droplet concentration was close to zero. However, with the new passage procedure, there was a significant increase in wettability of the surface. With the proposition of the chamber with 12 nozzles, the suspended droplet concentration in different regions increased, with an average increase of 266%. The experimental results of the new configuration proved that there was an increase in wettability at all times of exposure, and it was more significant for an exposure of 30 s. Additionally, even in different passage procedures, there were no significant differences in the results for an exposure of 10 s, thereby showing the effectiveness of the new configuration or improved spraying and wettability by the biocidal agent, as well as in minimizing the impact caused by human factor in the performance of the disinfection technology.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>34010343</pmid><doi>10.1371/journal.pone.0251817</doi><tpages>e0251817</tpages><orcidid>https://orcid.org/0000-0003-1655-0325</orcidid><oa>free_for_read</oa></addata></record>
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1932-6203
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source MEDLINE; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central; Free Full-Text Journals in Chemistry; Public Library of Science (PLoS)
subjects Air pollution
Analysis
Biocides
Biology and life sciences
Computer applications
Computer programs
Coronaviruses
COVID-19
COVID-19 - epidemiology
COVID-19 - metabolism
COVID-19 - transmission
COVID-19 - virology
COVID-19 vaccines
Data analysis
Decontamination
Decontamination - instrumentation
Decontamination - methods
Disease transmission
Disinfectants - analysis
Disinfection
Disinfection - instrumentation
Disinfection - methods
Disinfection and disinfectants
Dispersion
Drafting software
Engineering and Technology
Evaluation
Fluid dynamics
Health services
Hospitals
Humans
Hydrodynamics
Immunization
Industrial applications
Infections
Innovations
Learning
Medical personnel
Medical supplies
Medicine and Health Sciences
Methodology
Methods
Microorganisms
Models, Theoretical
National service
New technology
Pandemics
Personal protective equipment
Physical Sciences
Protective equipment
Quarantine
Respiratory diseases
SARS-CoV-2 - drug effects
SARS-CoV-2 - isolation & purification
Secretions
Severe acute respiratory syndrome
Severe acute respiratory syndrome coronavirus 2
Software
Technology
Viral diseases
Viruses
Visualization
title Numerical and experimental analyses for the improvement of surface instant decontamination technology through biocidal agent dispersion: Potential of application during pandemic
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