Catalytic decomposition and mass transfer of aqueous ozone promoted by Fe-Mn-Cu/γ-Al2O3 in a rotating packed bed

This study investigated catalytic decomposition and mass transfer of aqueous ozone promoted by Fe-MnCu/γ-AlO(Cat) in a rotating packed bed(RPB) for the first time.The results showed that the value of the overall decomposition rate constant of ozone(K) and overall volumetric mass transfer coefficient(Ka)are 4.28×10sand 11.60×10srespectively at an initial pH of 6,β of 40,Co3(g)) of 60 mg·Land Qof 85 L·hin deionized water,respectively.Meanwhile,the Kand Ka values of Fenhe water are0.88×10sand 2.51×10slower than deionized water,respectively.In addition,the Kand Ka values in deionized water for the Cat/O-RPB system are 44.86% and 47.41% higher than that for the Cat/O-BR(bubbling reactor) system,respectively,indicating that the high gravity technology can facilitate the decomposition and mass transfer of ozone in heterogeneous catalytic ozonation and provide some insights into the industrial wastewater.