Abstract
In this paper, a gas-liquid two-phase discharge plasma water treatment device was designed for the degradation of alizarine reds in simulated dye wastewater. The effects of the solution circulation flow rate, carrier gas velocity, discharge power, initial concentration, solution pH, Fe2+ addition, H2O2 addition, and tert-butanol addition on the removal efficiency of alizarin red were investigated in the experiment. According to the treatment results of 50 mg/L and pH 7.21 alizarine reds in simulated dye wastewater, the removal efficiency reached 94.6%: the discharge power of 43.5 W, the circulation flow rate of 52 L/h, and the carrier gas velocity of 20 mm/s. Meanwhile, the mechanistic and reaction kinetics of the alizarine reds degradation process were investigated, and the economic feasibility of plasma discharge alizarine reds degradation.
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