Electrochemical Degradation of O-chloroaniline with Threedimensional Electrodes
Degradation of o-chloroaniline wastewater was experimentally investigated using three-dimensional electrodes with granular activated carbon as particle electrode,graphite as the anode,and stainless steel plates as the cathode.Effects of voltage,pH value,electrolysis time,anode-cathode distance on degradation efficiency were analyzed to determine the optimum operating conditions.Results indicated that under the optimized reaction conditions as voltage 15.0 V,Na2SO4 solution 0.10 mol/L for 30 min with pH 3.0,approximately 97.50% of COD was removed.UV-visible absorption spectrum of o-chloroaniline solutions during degradation by three-dimensional electrode reactor showed that the most benzene rings have been broken down to form aliphatic substances.There were no appearance of other peaks at the wavelength range of 250~350 nm,indicating none synthetization of macromolecule.Results indicated that the effect of degradation by three-dimensional electrodes is excellent.