DEGRADATION OF 4-CHLOROPHENOL IN AQUEOUS SOLUTION WITH PULSED HIGH-VOLTAGE DISCHARGE PLASMA
The effects of some factors on degradation of 4-chlorophenol in waste water with pulsed high-voltage discharge plasma were studied. Furthermore,the kinetics of degradation of 4-chlorophenol was also studied. The degradation efficiency of 4-chlorophenol could be raised considerably by increasing peak voltage, bubbling rate of gas and by decreasing electric conductivity of waste water. The presence of alcohol would decrease the degradation efficiency of 4-chlorophenol. The degradation of 4-chlorophenol in waste water with pulsed high-voltage plasma was a first-order reaction. The correlation between degradation rate constant k and reaction temperature T could be expressed by Arrhenius equation. At initial pH 7.0, electric conductivity of waste water 80?μS·cm -1,peak voltage 30?kV,discharge frequency 60?Hz,the diameter of discharge electrode 0.6?mm,and discharge distance were 3.0?cm, A was 1.365×10 -2min -1 and experimental activation energy E a was 5.129?kJ·mol -1. The degradation rate constant k could also be expressed.