CREEM2024

CREEM 2024 - XXX Congresso Nacional de Estudantes de Engenharia Mecânica

Low-cost Cold Atmospheric Plasma Source for Surface Sterilization

Submission Author: Helbert de Oliveira Coelho Júnior , DF
Co-Authors: Helbert de Oliveira Coelho Júnior, Rodrigo Cerda, José Ferreira, MARLENE Teixeira DE-SOUZA, Gabriel Alves, Felipe de Araújo Mesquita, Maquir Cardoso, Luana Neves
Presenter: Helbert de Oliveira Coelho Júnior

doi://10.26678/ABCM.CREEM2024.CRE2024-0040

 

Abstract

Plasmas have several applications in industry, mainly in surface treatment. This work aims to apply the properties of cold atmospheric plasmas for the sterilization of surfaces, objects, and environments. An atmospheric plasma source has been developed using different circuit topologies that work with high frequencies, on the order of KHz, utilizing AC or DC-Pulsed signals. Then, a prototype DC circuit was implemented employing inexpensive materials. Preliminar results of the biocide action using \emph{Peribacillus siplex} demonstrate that the plasma source is able to sterilize after 10 minutes of exposition to the plasma.

Keywords

cold atmospheric plasma, high voltage power supply, plasma sterilization, DC-pulsed circuit, flyback transformer

 

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