[Catalytic oxidation of dimethyl phthalate in aqueous solution by aluminum oxide]

With dimethyl phthalate as the model pollutant and alumina as catalyst, the degradation of TOC system was systemically investigated. Results show that Al2O3 can significantly increase the effect of ozonation, and TOC removal rate in 120 minutes can reach 55.1% while only 23.9% with alone ozone. Al2O3 activeness is upmost under the follow conditions: calcination temperature, 600 degrees C; particle diameter, 0.5 - 1 mm; catalyst dosage, 20 g/L; gas flow rate, 200 mL/min, react temperature, 15 degrees C. The contrastive experiments of alone ozone, catalyst adsorption after ozonation and catalytic ozonation confirmed that catalytic reaction is the most important process to TOC removal in system with alumina as catalyst.