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

Efficient treatment of salty organic wastewater by α‐MnO2‐N/C synergistic catalytic ozonation: Effect and mechanism

“…And as shown in Figure 8B–E, the dissolved ozone in water reaches decomposition equilibrium at about 15, 20, and 10 min under the action of MnO 2 /AC, N/C, and α‐MnO 2 ‐N/C@AC catalysts, respectively. The decomposition rate constants of MnO 2 /AC, N/C, and α‐MnO 2 ‐N/C@AC catalysts for dissolved ozone in water are 2.93 × 10 −3 , 2.37 × 10 −3 , and 3.81 × 10 −3 s −1 , respectively, which is in line with the pseudo‐first‐order kinetics and consistent with those reported in the literature 46 . The rate constant of ozone decomposition under the action of α‐MnO 2 ‐N/C@AC catalysts is 1.3 and 1.61 times higher than those of MnO 2 /AC and N/C catalysts, respectively, indicating that α‐MnO 2 ‐N/C@AC catalysts contain α‐MnO 2 sites and N/C sites could realize synergistic catalysis through the rapid adsorption and conversion of ozone.…”

“…And furthermore, the role of metal sites and nonmetal sites was further elucidated by the measurement of ozone decomposition rate in water. Previous literature reported that the decomposition of ozone in water was found to be in accordance with the proposed primary reaction kinetics, 45,46 while the addition of a catalyst could accelerate the decomposition of ozone, as shown in Equations 1: …”

“…Previous literature reported that the decomposition of ozone in water was found to be in accordance with the proposed primary reaction kinetics, 45,46 while the addition of a catalyst could accelerate the decomposition of ozone, as shown in Equations 1:…”

Solubility Measurement and Modeling of 9-Phenylcarbazole in Various Organic Solvents at Different Temperatures toward Efficient Process Design of Solvent Antisolvent Precipitation

“…The solvent antisolvent method based on the conventional stirred reactor is usually time consuming. High-gravity technology based on the RPB reactor is a typical process intensification technology with great potential for industrial applications due to its high mass transfer efficiency, which has been applied in the preparation of nanoparticles, polymers, and emulsions. − It has also been preliminarily demonstrated in our previous report that the RPB method can significantly enhance the process efficiency for the purification of 9,9-dihexyl-2,7-dibromofluorene via solvent/antisolvent precipitation . Compared to commercially available stirred tank reactors and microchannel reactors, RPB is a kind of complementary technology to microfluidic systems and allows fast mass transfer and molecular mixing during nucleation and growth as well as continuous operation and large mass fluxes for scale-up .…”