Application of CuO/AC in DBD plasma for dye wastewater treatmnent: synthesis, optimization, and coupling mechanism

ABSTRACT Acid turquoise blue A (ATBA) is treated by the combined dielectric barrier discharge (DBD) plasma and AC supported CuO (CuO/AC). CuO/AC is prepared by incipient wetness impregnation method. X-ray diffraction, N 2 adsorption/desorption isotherm, and scanning electron microscope are used to characterize the CuO/AC. Interactive effects of initial pH, conductivity value, input power, and CuO/AC dosage on the decolorization rate of ATBA are investigated. The predicted decolorization rate of ATBA reaches to 97.12% under the optimal condition, only have 1.95% error compared with the experimental value (95.87%). The possible coupling mechanisms of combined DBD plasma and CuO/AC are proposed.