In this study, a new strategy in catalytic ozonation removal method for degradation of phenol from industrial wastewater was investigated. Magnetic carbon nano composite as a novel catalyst was synthesized, characterized and then used in the catalytic ozonation process (COP) and compared with the single ozonation process (SOP). The influential parameters were all investigated. The results showed that the removal efficiency of phenol and COD (chemical oxygen demand) in COP (98.5%, 69.8%) was higher than those of SOP (78.7%, 50.5%) and the highest catalytic potential was achieved at optimal neutral pH. First order modeling demonstrated that the reactions were dependent on the concentration of catalyst, with kinetic constants varying from 0.023 1/min (catalyst?=?0 g/L) to 0.071 1/min (catalyst?=?4 g/L), whereby the optimum dosage of catalyst was found to be 2 g/L. Furthermore, the catalytic properties of the catalyst remained almost unchanged after 5-time reuse. The results regarding the biodegradability of the effluent showed that a 5-min reaction time in COP reduced the concentrations of phenol and COD to the acceptable levels for the efficient post-treatment in the SBR in a 4-h cycle period. Finally, this combined system is proven to be a technically effective method for treating phenolic contaminants.
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机译：本研究研究了一种催化臭氧氧化去除工业废水中苯酚的新方法。合成，表征了磁性碳纳米复合材料作为新型催化剂，然后用于催化臭氧化工艺（COP），并与单臭氧化工艺（SOP）进行了比较。影响因素都进行了调查。结果表明，COP中苯酚和COD的去除效率（化学需氧量）（98.5％，69.8％）高于SOP（78.7％，50.5％），并且在最佳中性pH下达到了最高的催化潜力。一阶建模表明，反应取决于催化剂的浓度，动力学常数从0.023 1 / min（催化剂η=？0 g / L）到0.071 1 / min（催化剂？=？4 g / L）变化。从而发现催化剂的最佳剂量为2g / L。此外，在重复使用5次后，催化剂的催化性能几乎保持不变。关于废水的生物降解性的结果表明，在COP中进行5分钟的反应时间会将苯酚和COD的浓度降低至可接受的水平，以在4小时的周期内在SBR中进行有效的后处理。最后，该组合系统被证明是处理酚类污染物的技术有效方法。
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