Preparation and application of copper-loaded activated carbon catalyst for catalytic oxidation of dye wastewater

The catalyst, which is composed of activated carbon as carrier and loaded with copper oxide (CuO) as active component, was made and main factors in the preparation of this catalyst were further analyzed. Under the optimized preparation condition of nitric acid 2.5 mol/L, soaking time 12 h, concentration of Cu(NO₃)₂ 7.5%, calcination temperature 280°C for 3 h, the optimum catalytic activity could be obtained. The best catalytic oxidation process of dye wastewater treatment was also investigated by this catalyst. The regeneration process of deactivated catalyst was also investigated and the activity of regenerated catalyst was recovered to about 90%.