Abstract-Interest in pollution issues caused by synthetic dye wastewater is growing. For many years, researchers have attempted to develop more efficient treatment technology to solve this long-standing environmental problem. As many related studies have focused on advanced oxidation processes (AOPs), the plasma process is remarkable due to its high decolorization efficiency over a short time. This study applied a plasma process in the form of pulsed discharge to treat dye wastewater and to investigate the decolorization of dye wastewater over time by manipulating operation parameters. This method is expected to provide a rapid and highly efficient decolorization technology for wastewater treatment. The results indicate that 99%, 98%, 95% and 73% decolorization could be achieved for methylene blue solutions with initial concentrations of 1 ppm, 5 ppm, 10 ppm, and 20 ppm, respectively, after the experimental device was operated for one hour with operation parameters set at 100 mL min -1 for air inflow, an initial pH of 2.5 for pollutants, and 10 KV for output voltage, while other parameters were fixed.
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