High-Efficiency Mass Production of Plasma Activated Water by the Gliding Arc Plasma

Abstract

In the agricultural and food industries, there is an urgent need for large-capacity and high-efficiency plasma-activated water (PAW) production technology. Regarding this matter, we demonstrate the mass production of PAW with high efficiency based on reverse vortex flow (RVF) gliding arc (GA) plasma with an input power of 4 kW or higher. With the current system, the production capacity of the PAW with pH 3.0 is 1000 L/h for distilled water and 500 L/h for tap water. The amount of ${\mathrm {NO}}_{3}^{-}$ ion in the PAW was 60 g/kWh, which is ten times higher than that of a dielectric barrier discharge (DBD) method. The produced PAW tends to show a higher acidity for a longer storage time.