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BPA (Bisphenol-A) is an organic colorless crystalline synthetic compound with the chemical formula of (CH 3 )–C–(C 6 H 4 -OH) 2 . The chemical structure of BPA consists of two methyl functional groups which are connected by a bridge to the phenol rings. The purpose of this study is to investigate the treatability of containing BPA wastewater using by homogeneous (ZnSO 4  catalyst) and heterogeneous (ZnO catalyst) catalytic ozone processes (COPs). The BPA removals of ZnO catalyst COP method and ZnSO 4  catalyst COP methods were compared and using the ZnO catalyst COP process gave better results than the ZnSO 4  catalyst COP process. For the BPA removals, the experimental parameters including pH, catalysts dose, ozone dose, and reaction time parameters were optimized by changing one parameter at a time. As a result of 12.5 min of ZnSO 4  oxidation, 94.16% of BPA removal was achieved under the optimum conditions (pH 6.32, 1 mg/L ZnSO 4  dose, 2400 mg/L O 3  dose). However, under optimum conditions (pH 6.32, 50 mg/L ZnO dose, 2400 mg/L O 3  doze, 20 min reaction time), the BPA removals have been obtained as 98.52%. The second-order kinetic model has been found to be the most suitable model for both processes and the regression coefficients (R 2 ) have been found as 0.999 and 0.9979 for ZnSO 4  and ZnO catalysts COPs, respectively. The reaction rate constants (k) have also been calculated as 0.0939 L.mg −1 .min −1  and 0.0509 L.mg −1 .min −1  for BPA in homogeneous and heterogeneous COPs, respectively.

Treatability and Kinetic Analysis of BPA-containing Wastewater by Catalytic Ozone Processes Using ZnSO 4 and ZnO Catalysts