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Inactivating SARS-CoV-2 Using 275 nm UV-C LEDs through a Spherical Irradiation Box: Design, Characterization and Validation.
Trivellin, Nicola; Buffolo, Matteo; Onelia, Francesco; Pizzolato, Alberto; Barbato, Marco; Orlandi, Viviana Teresa; Del Vecchio, Claudia; Dughiero, Fabrizio; Zanoni, Enrico; Meneghesso, Gaudenzio; Crisanti, Andrea; Meneghini, Matteo.
  • Trivellin N; Department of Industrial Engineering, University of Padova, Via Gradenigo 6A, 35131 Padova, Italy.
  • Buffolo M; Department of Information Engineering, University of Padova, Via Gradenigo 6B, 35131 Padova, Italy.
  • Onelia F; Department of Information Engineering, University of Padova, Via Gradenigo 6B, 35131 Padova, Italy.
  • Pizzolato A; Department of Molecular Medicine, University of Padova, Via Gabelli 63, 35121 Padova, Italy.
  • Barbato M; LightCube SRL, Viale Navigazione Interna 51, 35129, Padova, Italy.
  • Orlandi VT; Department of Information Engineering, University of Padova, Via Gradenigo 6B, 35131 Padova, Italy.
  • Del Vecchio C; LightCube SRL, Viale Navigazione Interna 51, 35129, Padova, Italy.
  • Dughiero F; DBSV, University of Insubria, Via J.H. Dunant 3, 21100 Varese, Italy.
  • Zanoni E; Department of Molecular Medicine, University of Padova, Via Gabelli 63, 35121 Padova, Italy.
  • Meneghesso G; Department of Industrial Engineering, University of Padova, Via Gradenigo 6A, 35131 Padova, Italy.
  • Crisanti A; Department of Information Engineering, University of Padova, Via Gradenigo 6B, 35131 Padova, Italy.
  • Meneghini M; Department of Information Engineering, University of Padova, Via Gradenigo 6B, 35131 Padova, Italy.
Materials (Basel) ; 14(9)2021 Apr 29.
Article in English | MEDLINE | ID: covidwho-1389429
ABSTRACT
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.
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Full text: Available Collection: International databases Database: MEDLINE Type of study: Prognostic study Language: English Year: 2021 Document Type: Article Affiliation country: MA14092315

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Full text: Available Collection: International databases Database: MEDLINE Type of study: Prognostic study Language: English Year: 2021 Document Type: Article Affiliation country: MA14092315