Disinfection Treatments of Disposable Respirators Influencing the Bactericidal/Bacteria Removal Efficiency, Filtration Performance, and Structural Integrity
| Autor: | Kyeongeun Lee, Jooyoun Kim, Tahmineh Hemmatian, Eugene Song, Jehyung Yi, Seojin Jung, Dongwan Seo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
business.product_category
Polymers and Plastics Coronavirus disease 2019 (COVID-19) Extended wear Hypochlorite 02 engineering and technology 010501 environmental sciences 01 natural sciences Article law.invention lcsh:QD241-441 chemistry.chemical_compound lcsh:Organic chemistry law mechanical Respirator Filtration 0105 earth and related environmental sciences filtration Chemistry public health Structural integrity Bacteria removal respirator General Chemistry 021001 nanoscience & nanotechnology Pulp and paper industry reuse antimicrobial 0210 nano-technology business electrostatic Bioaerosol |
| Zdroj: | Polymers Volume 13 Issue 1 Polymers, Vol 13, Iss 45, p 45 (2021) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym13010045 |
| Popis: | In the outbreak of COVID-19, the extended wear of single-use, disposable respirators was inevitable due to limited supplies. As a respirator is front-line protection against particulate matter, including bioaerosol and droplets, a comprehensive understanding for the reuse strategy is needed. In this study, eight different disinfection methods commonly applied for the reuse of respirators were compared for their influence on the filtration and bactericidal/bacteria removal performance, with in-depth discussion on the cause of effects. Treatments including oven-dry, ultraviolet irradiation (UV), microwaving, laundering with and without detergent, and immersion in hypochlorite, isopropanol, and ethanol were performed to respirators. Immersion in ethanol or isopropanol was effective for inactivation and removal of bacteria, yet such a treatment significantly deteriorated the filtration efficiency in about 20&ndash 28%, dissipating the surface charges. Laundering, while effective in removing the attached bacteria, triggered physical damage, leading to a possible reduction of filtration performance. A short-term oven-dry, UV irradiation, and microwaving mostly preserved the filtration performance, yet the drawback lied in the incomplete bactericidal efficiency. This study would contribute to the public health and safety by providing scientific background on the effect of disinfection treatment methods for respirators. |
| Databáze: | OpenAIRE |
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