Cold atmospheric plasma inactivation of aerosolized microdroplets containing bacteria and purified SARS‐CoV‐2 RNA to contrast airborne indoor transmission. Issue 10 (31st August 2020)

• Record Type: Journal Article
• Authors: Bisag, Alina; Isabelli, Pasquale; Laurita, Romolo; Bucci, Cristiana; Capelli, Filippo; Dirani, Giorgio; Gherardi, Matteo; Laghi, Giulia; Paglianti, Alessandro; Sambri, Vittorio; Colombo, Vittorio
• Other Names: Sardella Eloisa guestEditor.; Tanaka Hiromasa guestEditor.
• Is Part Of: Plasma processes and polymers. Volume 17:Issue 10(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-08-31
• Subjects: bioaerosol -- cold plasma -- inactivation -- indoor airborne transmission -- SARS‐CoV‐2; Plasma polymerization -- Periodicals; Plasma-enhanced chemical vapor deposition -- Periodicals; Plasma chemistry -- Periodicals
• DOI: 10.1002/ppap.202000154
• Languages: English
• ISSNs: 1612-8850

Abstract

Abstract: One of the major concerns in the COVID‐19 pandemic is related to the possible transmission in poorly ventilated spaces of SARS‐CoV‐2 through aerosol microdroplets, which can remain in the air for long periods of time and be transmitted to others over distances >1 m. Cold atmospheric pressure plasmas can represent a promising solution, thanks to their ability in producing a blend of many reactive species, which can inactivate the airborne aerosolized microorganisms. In this study, a dielectric barrier discharge plasma source is used to directly inactivate suitably produced bioaerosols containing Staphylococcus epidermidis or purified SARS‐CoV‐2 RNA flowing through it. Results show that for low residence times (<0.2 s) in the plasma region a 3.7 log R on bacterial bioaerosol and degradation of viral RNA can be achieved. Abstract : A dielectric barrier discharge is used to directly inactivate bioaerosols containing Staphylococcus epidermidis or purified SARS‐CoV‐2 RNA flowing through it.