高铁酸钾的超声辅助化学合成及其对餐厨垃圾渗滤液的处理效果  

Ultrasonic-assisted chemical synthesis of K_2FeO_4 and its treatment efficiency on kitchen waste leachate

作　　者：何则强[1] 滕瑶[1] 胡文勇[1] 吴玉先[1] 瞿忠心[1] 熊利芝[1] 

机构地区：[1]吉首大学生物资源与环境科学学院,吉首416000

出　　处：《环境工程学报》2016年第2期551-558,共8页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51364009;51262008;51202087;51472107);生态旅游湖南省重点实验室开放基金项目(JDSTLY1503);湖南省研究生培养创新基地开放基金项目(201508);吉首大学研究生培养创新基地项目(研通[2015]20号);吉首大学校级研究生项目(15JDY024);湖南省重点学科建设项目(JSU0713);湖南省高校科技创新团队支持计划项目([2014]207)

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%。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.

关 键 词：高铁酸钾 微波辅助 化学合成 餐厨垃圾渗滤液 

分 类 号：X703[环境科学与工程—环境工程]