The evaluation of different catalysts performance for the degradation of effluents from pharmaceutical and agrochemical industries was performed. The response surface method was used to specify the optimum values of operating parameters (e.g., pH and flow rate). The optimum operating parameters were pH = 6.8 and flow rate = 108.6 mL/min for pharmaceutical wastewater, whereas the pH and flow rate values of 6.5 and 108.6 mL/min, respectively achieved the highest degradation efficiency for agrochemical wastewater using a composite of carbon nanotubes (CNTs) and lanthanum vanadate (LaVO4 ). The mineralization rates of pharmaceutical wastewater were 89.5, 84, 74, 69.8 and 60.5% under five succeeding runs using CNTs/LaVO4, whereas the total organic carbon (TOC) removal efficiencies of agrochemical wastewater were 94.3, 93.1, 85.8, 76.2 and 73.2% in the five following runs. The degradation rates were 0.0114, 0.0156 and 0.0084 min?1 using a composite of Mat?riaux de l Institut Lavoisier metal organic framework-53 (MIL-53(Al)) and zinc oxide (ZnO) (MIL-53(Al)/ZnO), CNTs/LaVO4 and pristine titanium dioxide (TiO2 ), respectively in the case of pharmaceutical wastewater, whereas the degradation rates were 0.017, 0.0196 and 0.0104 min?1 using MIL-53(Al)/ZnO, CNTs/LaVO4 and pure TiO2, respectively in the case of agrochemical wastewater.
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