Chemical kinetics study on p-chlorophenol Wastewater Treatment by the technology of electrochemical oxidation

Abstract

Based on experimental research, this paper discussed the Kinetics law of p-chlorphenol Wastewater Treatment by electrochemical oxidation, The influence effect on the reaction rates of p-chlorphenol degradation was inspected how various factors of aeration rate, applied voltage, supporting electrolyte concentration, and the initial pH value by experiment. The results show that the electrochemical degradation accords with the apparent first-order kinetics law, the applied voltage and the initial pH value are greater impact on electrochemical treatment reaction rate, but the effect of aeration rate and support electrolytes concentration on Electrochemical reaction rate are relatively small. The efficiency of degradation was increased along with the higher voltage but reduce gradually. When aeration rate, the electrolyte concentration and initial PH value changes within a certain scope, the rule of electrochemical oxidization processing efficiency were first increased and then reduce. Comprehensive consideration of the treatment efficiency and economic factors, suitable for the experimental conditions are the decomposition voltage of 10V, the aeration rate of 0.2m 3 /L, the supporting electrolyte concentration of 0.04mol/L and the initial pH value of 3.0.