Study on Phenolic Wastewater Treatment Using Electro-catalysis:Kinetics and Influential Factors
A bench scale experiment was conducted with a packed bed electrochemical reactor to treat phenol-containing wastewater,in which IrO2-Ta2O5was used as the anode,Ti as the cathode. The kinetic model of phenol degradation was analyzed and factors affecting removal rates of COD and phenol,such as water flow rate,current density,and initial concentration of phenol,were studied. The result showed that during the diffusion control stage,phenol degradation in the reactor followed the pseudo-first-order kinetic model,while during the reaction stage,the zero-order reaction model;and that phenol removal and COD removal could reach 99.92% and 85.21% respectively. In addition,as the current density increased,so did the energy consumption of the system.