Photo-assisted electrochemical degradation of real textile wastewater

摘要

In the present study, photo-assisted electrochemical degradation of real textile wastewater wasnperformed. Degradation assays were performed at constant current (40mAcm22n) in a combinednelectro/photochemical flow-cell using a Ti/Ru0.3Ti0.7O2 DSAw type electrode. The results show thatnthe method is capable of removing color and chemical oxygen demand (COD) from the effluent.nAdditionally, the effect of initial pH and type of supporting electrolyte (Na2SO4 or NaCl) wasninvestigated. The principal figures of merit used in this study were COD removal and colornremoval (605 nm). The results show that up to 72% color and up to 59% COD removal in 120minnis possible under the operating conditions employed. Studies of the phytotoxicity of thenwastewater before and after the photo-assisted degradation assays are also presented and thenresults demonstrate that the toxicity of the effluent is dependent on the length of electrolysisntime and the treatment procedure employed.