Abstract
Cold plasma-liquid interaction becomes a growing interdisciplinary area of research involving plasma physics, fluid science, and chemistry. Plasma-liquid interaction has gained more interest over the last many years due to its potential applications in different fields. Cold atmospheric plasma jet is an emerging technology for surface drinking water treatment to improve quality and surface modification that is chemical-free and eco-friendly. Cold plasma treatment of water samples results in changes in turbidity, pH, and conductivity and in the formation of reactive oxygen and nitrogen species (RONS). As a result, plasma-activated water has a different chemical composition than water and can serve as an alternative technique for microbial disinfection. CAPJ has been generated by a high voltage 5 kV and a high frequency 19.56 kHz power supply. The discharge has been characterized by an optical method. To characterize the cold atmospheric pressure argon plasma jet, discharge plume temperature, and electron rotational and vibrational temperature have been determined. Cold atmospheric argon plasma jet produced at atmospheric condition contains high energetic electrons, ions, UV radiation, reactive oxygen, and nitrogen species named as cold plasma which has a wide range of applications in the biomedical industry, as well as in water treatment. Nowadays, researches have been carried out on ozonation through plasma jet interaction with surface drinking water. In this paper, we compare the change in physical and chemical parameters of surface water used for drinking purposes. The significant change in the physical parameters such as pH, turbidity, and electrical conductivity was studied. In addition, the significant changes in the concentration and absorbance of nitrate, ferrous, and chromium ions with respect to treatment time were studied. Our results showed that plasma jet interaction with surface drinking water samples can be useful for the improvement of water quality and an indicator for which reactive species play an important role in plasma sterilization.
Highlights
Plasma-liquid interaction has attracted increasing attention in recent years. e ability of plasma technology in plasmaliquid interaction, which has been confirmed due to the results of previous studies, along with the critical issue of water pollution as well as the lack of potable water, has led to the emergence of wide studies pointing to the use of different types of discharge plasma for water purification and wastewater treatment to improve their quality [1]
Water activated by nonthermal plasma creates an acidified solution containing reactive oxygen and nitrogen species, known as plasma-activated water. e physicochemical properties of plasma-activated water stored at different temperatures were evaluated, including pH, conductivity, turbidity, nitrate, and nitrite anion concentration [7]
Temperature of the plasma jet was directly measured about 25.5°C, so the produced discharge is termed as cold plasma and is widely used in comparing the physical and chemical parameters of drinking water before and after treatment
Summary
Plasma-liquid interaction has attracted increasing attention in recent years. e ability of plasma technology in plasmaliquid interaction, which has been confirmed due to the results of previous studies, along with the critical issue of water pollution as well as the lack of potable water, has led to the emergence of wide studies pointing to the use of different types of discharge plasma for water purification and wastewater treatment to improve their quality [1]. Plasma production in water affords one of the opportunities to thermally inject advanced oxidation processes into the water for chemical processing. Such technology could potentially change the treatment of drinking water [6]. E physicochemical properties of plasma-activated water stored at different temperatures were evaluated, including pH, conductivity, turbidity, nitrate, and nitrite anion concentration [7]. It has potentially a wide range of applications including environmental and biological fields such as food sterilization, cancer cell treatment, materials processing, and wastewater treatment. In package decontamination of foods, using cold plasma has advanced this technology as a single process for fresh foods decontamination and shelf-life extension [8, 9]
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