Inactivating SARS-CoV-2 Using 275 nm UV-C LEDs through a Spherical Irradiation Box: Design, Characterization and Validation

Autor: Viviana Teresa Orlandi, Nicola Trivellin, Francesco Onelia, Alberto Pizzolato, Gaudenzio Meneghesso, Enrico Zanoni, Claudia Del Vecchio, Marco Barbato, Fabrizio Dughiero, Matteo Meneghini, Andrea Crisanti, Matteo Buffolo
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Materials; Volume 14; Issue 9; Pages: 2315
Materials, Vol 14, Iss 2315, p 2315 (2021)
Materials
ISSN: 1996-1944
DOI: 10.3390/ma14092315
Popis: We report on the design, characterization and validation of a spherical irradiation system for inactivating SARS-CoV-2, based on UV-C 275 nm LEDs. The system is designed to maximize irradiation intensity and uniformity and can be used for irradiating a volume of 18 L. To this aim: (i) several commercially available LEDs have been acquired and analyzed; (ii) a complete optical study has been carried out in order to optimize the efficacy of the system; (iii) the resulting prototype has been characterized optically and tested for the inactivation of SARS-CoV-2 for different exposure times, doses and surface types; (iv) the result achieved and the efficacy of the prototype have been compared with similar devices based on different technologies. Results indicate that a 99.9% inactivation can be reached after 1 min of treatment with a dose of 83.1 J/m2.
Databáze: OpenAIRE
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