Low-cost device for active saliva droplet filtration and pathogen inactivation
DOI:
https://doi.org/10.5433/1679-0375.2021v42n1Suplp17Keywords:
COVID-19, Ambient sanitation system, Electrostatic filter, Low-cost.Abstract
This work presents a device capable of performing sanitization in environments using an electrostatic filter and ultraviolet light. Recognized techniques were employed in an innovative and low-cost construction model, like Corona Discharge and UVC germicidal light, using elements of easy acquisition and construction. The device consists of a tube with several electrostatic filters. On one side of the tube, an exhaust fan is installed to collect the air to be disinfected. So the air passes through the tubes with the electrostatic filter, which is responsible for collecting the particles suspended in the passing air, attracting them to the metal surface. Allied with this, UVC lights are also inserted in the structure, ensuring greater effectiveness in decontaminating the air that passes through the tubes. In the posterior side to the exhaust fan, the disinfected air is returned to the original environment. A Fluid dynamics simulation was made to investigate the airflow in a room. Standard strains for antimicrobial susceptibility testing were used for bioaerosols assay. The result is a low-cost equipment with great potential to deactivate several kinds of viruses, most especially the Sars-CoV-2 (Coronavirus), that is the main responsible for the global health crisis, designed to be used indoors with low ventilation.Downloads
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FARREN, A; YERALAN, S.Compositions and Methodsfor UV Sterilization. US 2014/0161663 A1. Deposit: 26Nov. 2013. Granting: 12 jun. 2014.
GEFTER, P.; KLOCHKOV, A.; MENEAR, John E.;NELSEN, Lyle D.Clean corona gas ionization.US8460433B2. Deposit: 24 apr. 2009. Granting: 09 Aug.2012.
GRIFFITHS, G. Skelmersdale; GAY, G. Norman Walter.Air Cleaning Device. EP1169131B1. Deposit: 12 Apr.2000. Granting: 22 Jun. 2005.
HARE, R. The Transmission of Respiratory Infections.Proceedings of the Royal Society of Medicine, [London],v. 57, n. 3, p. 221-230, 1964.
HAVENS, W. H; HENNICK; R. J.Sterilization Apparatus.US 8203124 B2. Deposit: 27 abr. 2007. Granting: 19 Jun.2012.
HUDSON, J. B.; SHARMA, M.; VIMALANATHAN,S.; Development of a Practical Method for Using OzoneGas as a Virus Decontaminating Agent, Ozone:Sci-ence & Engineering, v. 31, n. 3, p. 216-223, 2009. DOI:10.1080/01919510902747969. Accessed in: apr. 2020.
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OLNEY, Richard A.Electrostatic Air Cleaner.US4919693. Deposit: 29 mar. 1989. Granting: 24Apr. 1990.
RANGEL, M. C. Membranas Inorgânicas e reatores catalíticos. Química Nova, São Paulo, v.20, n.5 sep./oct.1997.
RIPPELMEYER, D. M.; MCELROY, J. W.ElectrostaticAir Cleaner. US6245131. Deposit: 02 Oct. 1998. Granting:12 Jun. 2001
SIM, K. M.; PARK, H. S.; BAE, G. N.; et al. Antimicro-bial nanoparticle-coated electrostatic air filter with highfiltration efficiency and low pressure drop.Science of theTotal Environment, Amsterdam, v. 533, p. 266–274, 2015.Available in: http://dx:doi:org/10:1016/j:scitotenv:2015:0:003. Accessed in: apr. 2020.
SHAM, J. C. K.;Ultraviolet Air Purifier. US 6464760B1. Deposit: 27 set. 2000. Granting: 15 out. 2002. US6464760 B1
SUMMERFELT, S. T. Ozonation and UV irradiation - Anintroduction and examples of current applications.Aqua-cultural Engineering, London, v. 28, n. 1/2, p. 21–36,2003.
VIEIRA, J. M.et al. What do we know about COVID-19?A review article.Revista da Associação Médica Brasileira,São Paulo, v. 66, n. 4, p. 534–540, 2020.
VIG, J.; LEBUS J., UV/Ozone Cleaning of Surfaces.IEEE Transactions on Parts, Hybrids, and Packag-ing, Canadá, v. 12, n. 4, p. 365-370, dec. 1976. Doi:10.1109/TPHP.1976.1135156. Accessed in: apr. 2020.
WHO - WORLD HEALTH ORGANIZATION.First dataon stability and resistance of SARS coronavirus compiledby members of WHO laboratory network. 2020. Availablein:https://www:who:int/health-topics/severe-acute-respiratorysyndrome/technical-guidance/laboratory/first-data-onstability-and-resistance-of-sars-coronavirus-compiledby-members-of-who-laboratory-network.Accessed in: apr. 2020.
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Published
2021-02-26
How to Cite
Castaldo, F. C., Pedotti, L. A. dos S., Monteiro, T. L., Kovalhuk, G., Góes, R. . E. de, Spindola, I. B., … Couto, G. H. (2021). Low-cost device for active saliva droplet filtration and pathogen inactivation. Semina: Ciências Exatas E Tecnológicas, 42(1Supl), 17–24. https://doi.org/10.5433/1679-0375.2021v42n1Suplp17
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