摘要： 采用氧化沉淀法制备了Fe₃O₄/改性焦炭复合催化剂，使用扫描电镜（SEM）和傅里叶交换红外光谱（FTIR）对其进行表征，考察了催化剂投加量、初始H₂O₂浓度、初始pH、温度对降解焦化废水效果的影响。结果表明，降解焦化废水的最佳条件：催化剂投加量为1.2 g/L，初始H₂O₂浓度为60 mmol/L，初始pH为3.0，温度为45℃，处理后的焦化废水达到排放标准。催化剂结构稳定、易磁分离循环利用。

关键词: Fe₃O₄/改性焦炭, 类Fenton, 催化氧化, 焦化废水

Abstract: The composite catalyst,Fe₃O₄/modified coke,has been prepared by oxidation precipitation method,and characterized by scanning electron microscopy(SEM)and Fourier transform infrared spectroscopy(FTIR). The in-fluences of catalyst dosage,initial H₂O₂ concentration,initial pH value and temperature on the degradation of cok-ing wastewater are investigated. The results show that the optimal conditions for the degradation of coking wastewa-ter are as follows:catalysts dosage is 1.2 g/L,initial H₂O₂ concentration 60 mmol/L,initial pH is 3.0,temperature is 45℃. Under these conditions,the treated coking wastewater can reach the discharge standard. The catalyst structure is stable,and easy to be magnetic-separated and recycled.

Key words: Fe₃O₄/modified coke, Fenton-like, catalytic oxidation, coking wastewater

中图分类号: 

• X703.1