Work

Study of Biocidal Properties of Ozone, Plasma-chemical and Combined Treatments on Artificially Contaminated Model Water Solutions

Year: 2025

Type: article

Abstract: Study was carried out to evaluate the biocidal effects of plasma-chemical methods for use by ozone, electric discharge with water electrode (plasma-chemical treatment) or their combination of artificially contaminated water. The preliminary contamination was achieved by inoculating water with suspensions of test cultures, including Escherichia coli #12 and Aspergillus flavus. The results showed that separate exposure to ozone or discharge with water electrode resulted in insignificant fungistatic effect on Aspergillus flavus and bacteriostatic effect on Escherichia coli #12 after exposure times of 2, 2.5, and 3 h, achieving inhibition rates of about 64%. Joint combined ozone and discharge with water electrode treatment during 2.5…3 h of water contaminated with a mixture of Escherichia coli #12 and Aspergillus flavus significantly inhibited microorganisms, causing destruction of the cell membrane and genetic material, resulting in the death of 95% of the cells. Such kind of treatment effectively improved the microbiological quality of drinking water.

DOI: 10.46813/2025-155-098

Authors: I.N. Onishchenko, G.V. Taran, O.O. Zamuriev, P.O. Opalev, M.O. Yaroshenko, O.V. Kolchyk

Institutions: Kharkiv Institute of Physics and Technology, National Scientific Center "Institute of Experimental and Clinical Veterinary Medicine"

Language: English

Topic: Plasma Applications and Diagnostics

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

SDGs: Clean water and sanitation, Good health and well-being

Open Access status: gold

Funders: National Research Foundation of Ukraine, National Research Foundation

Award: G3261993708