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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:49 |
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Conference: Bucharest University Faculty of Physics 2024 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Purifying Water Through the Corona Discharge
Authors:
Alessandra-Nicoleta MIRONESCU, Claudia CHILOM, Adrian RADU, Bogdan-Ionut BITA
Affiliation:
Department of Electricity, Solid-State Physics and Biophysics, 077125 Magurele, Romania
E-mail
mironescualessa@gmail.com
Keywords:
Plasma, Corona Discharge, Environmental purification, Filtration solutions, Fluorescence spectroscopy
Abstract:
Air and water pollution play major roles in environmental deterioration, which has gained international attention in recent years. The need to create effective and environmentally responsible techniques for air and water purification is increasing.
Applications for corona discharge have been investigated, including the purification of environments. Because of its capacity to produce reactive species like ozone and other active oxygen species, it offers a special chance for disinfection and pollutant elimination.
In this work we aimed to clarify the relationships involved in corona discharge-based purification procedures by using an approach that incorporates concepts from physics, biology, chemistry and engineering, through an electrical circuit that produces induction plasma.
Thus, during the experimental process, we used an electrical device that produced a small corona discharge, which was then introduced into water. Smoke was produced, followed by a strong smell of ozone.
Gathering three samples of water (tap water, plasma-purified water and water purified through reverse-osmosis – added for comparison), we tested each of them with the help of three colorimetric tests, to see the concentration levels of different pollutants.
For the next part of the experiment, we used a fluorescence spectrometer, in order to see if there were any microorganisms left in the liquid after the purification process, and if they emited in the UV-visible spectrum.
Several conclusions were made afterwards, the most important stating that plasma does purify the water (seen in the increased nitrite concentrations and lack of microorganisms in the fluorescence spectrum), and that the plasma-treated water emits in the UV-visible spectrum (since it also emits UV radiation in the environment).
This study aims to contribute to the continuing efforts to reduce environmental pollution and protect human health by offering insightful information about the application of corona discharge as a sustainable and effective method for purifying air and water.
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