| 초록 |
An electro-Fenton (EF) system with mesoporous sulfur-modified metal oxides (MS-Fe, Ni, Zn) coated graphite as a cathode was developed and investigated for Acid Orange 7 (AO7) degradation in wastewater. MS-Me and bare M-Me were synthesized and characterized to understand the effect of sulfur and the degradation pathway of AO7. Both sulfur-modified and nonsulfur-modified metal oxides are abundant with pores, cracks, and have large surface areas. The effects of the operation parameters, such as voltage, catalyst dose, pH, electrolyte concentration, pH, and AO7 concentration were optimized. Results showed that MS-Ni exhibited a good activity for degradation of 50ppm AO7, achieving 94% removal efficiency after 4 hours under the optimal conditions, which was approximately three times higher than the value obtained by bare graphite (31%) as cathode. |
