中文摘要：

采用超声辅助化学合成法制备K2Fe O4,用X-射线衍射、红外光谱和扫描电镜等对其进行表征。研究了K2Fe O4对餐厨垃圾渗滤液中COD和氨氮的处理效果。结果表明,本法制备的K2Fe O4具有四方结构,空间群为D2h（Pnma）,其产率达到68.2%,纯度高达98.3%。扫描电镜表明,制备的K2Fe O4由规则的条状颗粒组成,颗粒之间存在一定团聚。对餐厨渗滤液处理实验表明,在COD初始浓度为140.6 g/L的餐厨垃圾渗滤液中投加0.12 mol/L K2Fe O4,调节p H为8.7,经处理24 min后COD去除率达到80.4%,氨氮的去除率达到75.9%。

英文摘要：

K2Fe O4 was synthesized using a new ultrasonic-assisted chemical method and the microstructure,morphology were investigated by X-ray diffraction（ XRD）,Fourier transform infrared（ FT-IR） spectrum and scanning electron microscope（ SEM）. The treatment efficiency of COD and NH＋4-N of kitchen waste leachate by K2 Fe O4were discussed. Results show that as-prepared K2 Fe O4presented a tetrahedral structure with a space group of D2h（ Pnma）. The yield of K2 Fe O4was more than 68. 2% with high purity of 98. 3%. SEM demonstrated that the K2 Fe O4particles were in a regular strip shape with some agglomeration between the particles. When 0. 12 mol / L K2 Fe O4was added to 100 m L kitchen waste leachate with initial COD concentration of 140. 6 g / L and p H was adjusted to 8. 7 for 24 min,the removal rates of COD and ammonia nitrogen were 80. 4% and 75. 9%,respectively.