Inner Surface Biofilm Inactivation by Atmospheric Pressure Helium Porous Plasma Jet

Authors

Peng Lu, Technological University Dublin
Dana Ziuzina, Technological University DublinFollow
Patrick Cullen, Technological University DublinFollow
Paula Bourke, Technological University DublinFollow

Document Type

Article

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Abstract

We present a helium porous plasma jet based on gas diffuser, designed with the aim of decontaminating inner surfaces of contaminated structures, e.g., pipes. The porous plasma jet operates with three discharge modes in ambient air and inside a vessel. Its decontamination capacity is demonstrated by evaluating the inactivation efficacy of biofilm form of Pseudomonas aeruginosa, adherent to inner surface of a glass vial. Plasma treatments for 5 min with filament mode and double region helium discharge mode reduced bacterial numbers by 2.4 and 2.5 Log₁₀ CFU/ml. Plasma treatment with double region air‐like discharge mode was the most effective, reducing bacterial cells by 4.5 Log₁₀ CFU/ml, which demonstrates porous plasma jet could provide an efficient approach for inner surface decontamination.

DOI

https://doi.org/10.1002/ppap.201800055

Recommended Citation

Bourke, P. (2018) Inner Surface Biofilm Inactivation by Atmospheric Pressure Helium Porous Plasma Jet, Plasma Process Polym.2018;15:e1800055. DOI:10.1002/ppap.201800055