微波法制备四氧化三铁/粉末活性炭粒子电极及其在三维电化学氧化中处理氨氮废水的研究

Study on preparation of Fe_(3)O_(4)/PAC particle electrode by microwave method and applied in removal of ammonia nitrogen wastewater in three-dimensional electrochemical oxidation

利用微波法快速制备粉末活性炭(PAC)负载四氧化三铁(Fe_(3)O_(4))复合材料(Fe_(3)O_(4)/PAC)。通过红外光谱仪(FT-IR)、X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)和扫描电子显微镜(SEM)对材料进行了表征。在不同实验条件下分析了Fe_(3)O_(4)/PAC作为三维(3D)粒子电极对氨氮去除率的影响。结果表明:PAC∶FeSO_(4)=3∶1(质量比),微波功率=1000W,时间=60s时制备的复合材料对氨氮的去除率最好。且在电压20V,复合材料投加量为0.3g和初始温度40℃的条件下,电解60min后,氨氮去除率最佳为78.25%。

A composite material loaded with Fe_(3)O_(4) on powdered activated carbon(PAC)(Fe_(3)O_(4)/PAC)was synthesized rapidly by microwave.The materials were characterize by fourier transform infrared spectrometer(FT-IR),x-ray diffraction(XRD),x-ray photoelectron spectrometer(XPS)and scanning electron microscopy(SEM).The influence of Fe_(3)O_(4)/PAC as three-dimensional(3D)particle electrode on the removal rate of ammonia nitrogen under different experimental conditions was analyzed.The results shown that the composite materials prepared under the conditions of PAC∶FeSO_(4)=3∶1(mass ratio),microwave power=1000W,and time=60s had the best ammonia nitrogen removal rate.And under the conditions of voltage of 20V,the composite material dosage of 0.3g and initial temperature of 40℃,after 60min of electrolysis,the ammonia nitrogen removal rate was 78.25%.