Immersive ultraviolet disinfection of E. coli and MS2 phage on woven cotton textiles
Abstract Immersive ultraviolet disinfection provides a chemical-free technology for safer textiles, surfaces, and public spaces by inactivating communicable pathogens. This study examined immersive UV disinfection, using a disinfection cabinet, of E. coli and MS2 that was inoculated on white cotton...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-08-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-17663-5 |
| _version_ | 1811345182258364416 |
|---|---|
| author | Sean A. MacIsaac Toni J. Mullin Sebastian Munoz C. Carolina Ontiveros Graham A. Gagnon |
| author_facet | Sean A. MacIsaac Toni J. Mullin Sebastian Munoz C. Carolina Ontiveros Graham A. Gagnon |
| author_sort | Sean A. MacIsaac |
| collection | DOAJ |
| description | Abstract Immersive ultraviolet disinfection provides a chemical-free technology for safer textiles, surfaces, and public spaces by inactivating communicable pathogens. This study examined immersive UV disinfection, using a disinfection cabinet, of E. coli and MS2 that was inoculated on white cotton T-shirts. The impact that porous materials have on UV disinfection is poorly understood with the majority of previous surface disinfection research focusing on hard, smooth surfaces. Several approaches were used in this study to characterize the light dynamics within the disinfection cabinet including colorimetric dosimetry coupons, biodosimetry, and spectroradiometry. Micro and macro geometry of porous surfaces are important factors to consider when using immersive UV technologies. The geometry of the cabinet impacted the distribution of emitted UV light within the disinfection cabinet and the physical properties of a porous material, such as the woven pattern of cotton, both contribute to UV disinfection efficiency. This work identified that light distribution is crucial for immersive UV technologies as the delivered fluence was highly variable within the disinfection cabinet and resulted in a difference of several logs of reduction for adjacent areas of T-shirt samples. Other inoculated areas achieved upwards of 1-log reductions values for MS2 and upwards of 2-log reductions for E. coli. |
| first_indexed | 2024-04-13T19:59:10Z |
| format | Article |
| id | doaj.art-88fa126566ec45e8bf28b69b28d6ee03 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-13T19:59:10Z |
| publishDate | 2022-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-88fa126566ec45e8bf28b69b28d6ee032022-12-22T02:32:14ZengNature PortfolioScientific Reports2045-23222022-08-011211910.1038/s41598-022-17663-5Immersive ultraviolet disinfection of E. coli and MS2 phage on woven cotton textilesSean A. MacIsaac0Toni J. Mullin1Sebastian Munoz2C. Carolina Ontiveros3Graham A. Gagnon4Centre for Water Resources Studies, Department of Civil and Resource Engineering, Dalhousie UniversityCentre for Water Resources Studies, Department of Civil and Resource Engineering, Dalhousie UniversityCentre for Water Resources Studies, Department of Civil and Resource Engineering, Dalhousie UniversityCentre for Water Resources Studies, Department of Civil and Resource Engineering, Dalhousie UniversityCentre for Water Resources Studies, Department of Civil and Resource Engineering, Dalhousie UniversityAbstract Immersive ultraviolet disinfection provides a chemical-free technology for safer textiles, surfaces, and public spaces by inactivating communicable pathogens. This study examined immersive UV disinfection, using a disinfection cabinet, of E. coli and MS2 that was inoculated on white cotton T-shirts. The impact that porous materials have on UV disinfection is poorly understood with the majority of previous surface disinfection research focusing on hard, smooth surfaces. Several approaches were used in this study to characterize the light dynamics within the disinfection cabinet including colorimetric dosimetry coupons, biodosimetry, and spectroradiometry. Micro and macro geometry of porous surfaces are important factors to consider when using immersive UV technologies. The geometry of the cabinet impacted the distribution of emitted UV light within the disinfection cabinet and the physical properties of a porous material, such as the woven pattern of cotton, both contribute to UV disinfection efficiency. This work identified that light distribution is crucial for immersive UV technologies as the delivered fluence was highly variable within the disinfection cabinet and resulted in a difference of several logs of reduction for adjacent areas of T-shirt samples. Other inoculated areas achieved upwards of 1-log reductions values for MS2 and upwards of 2-log reductions for E. coli.https://doi.org/10.1038/s41598-022-17663-5 |
| spellingShingle | Sean A. MacIsaac Toni J. Mullin Sebastian Munoz C. Carolina Ontiveros Graham A. Gagnon Immersive ultraviolet disinfection of E. coli and MS2 phage on woven cotton textiles Scientific Reports |
| title | Immersive ultraviolet disinfection of E. coli and MS2 phage on woven cotton textiles |
| title_full | Immersive ultraviolet disinfection of E. coli and MS2 phage on woven cotton textiles |
| title_fullStr | Immersive ultraviolet disinfection of E. coli and MS2 phage on woven cotton textiles |
| title_full_unstemmed | Immersive ultraviolet disinfection of E. coli and MS2 phage on woven cotton textiles |
| title_short | Immersive ultraviolet disinfection of E. coli and MS2 phage on woven cotton textiles |
| title_sort | immersive ultraviolet disinfection of e coli and ms2 phage on woven cotton textiles |
| url | https://doi.org/10.1038/s41598-022-17663-5 |
| work_keys_str_mv | AT seanamacisaac immersiveultravioletdisinfectionofecoliandms2phageonwovencottontextiles AT tonijmullin immersiveultravioletdisinfectionofecoliandms2phageonwovencottontextiles AT sebastianmunoz immersiveultravioletdisinfectionofecoliandms2phageonwovencottontextiles AT ccarolinaontiveros immersiveultravioletdisinfectionofecoliandms2phageonwovencottontextiles AT grahamagagnon immersiveultravioletdisinfectionofecoliandms2phageonwovencottontextiles |