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Abstract

The oxidation ability of cold plasma is a major influence on bacterial inactivation, lipid oxidation, medical equipment sterilization, and applications in air and wastewater purification, for this reason, the ability of cold plasma to oxidize materials is an important factor that must be studied. In this study, the ability of cold plasma generated by a dielectric barrier discharge (DBD) to oxidize materials was revealed and proven by using different exposure times (5, 10, 15, 20 min) and several measurements: the decolonization of indigo carmine from dark blue to yellow, the significant reduction in pH, and the increase in oxidation reduction potential (ORP) and electrical conductivity (EC), Proven spectrophotometrically in the presence of nitrogen and its oxide ions. It was observed that the exposure time of 15 min is the maximum period during which oxidation occurs, after which saturation occurs. Numerous reactive oxygen and nitrogen species are created upon the interaction of gas phase plasma and water vapor (supported by excited species, energies and plasma electrons).

Keywords

Dielectric barrier discharge (DBD), Decolorization, Electrical conductivity EC, Indigo carmine, Oxidation

Subject Area

Physics

Article Type

Article

First Page

1295

Last Page

1303

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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