氧化石墨烯负载纳米Fe3O4类芬顿处理制药废水

采用改进Hummer法制备了氧化石墨烯(GO)负载纳米Fe₃O₄磁性催化剂(Fe₃O₄/GO),对其进行了X射线衍射仪、扫描电子显微镜和能量-色散光谱表征,并将其应用于多相类芬顿处理高浓化学原料药生产废水。结果表明,Fe₃O₄颗粒成功负载在GO表面,且没有出现明显的团聚现象。当废水的pH为3,双氧水(H₂O₂的质量分数30%)投加量10 mL/L,催化剂投加量2 g/L,反应120 min后COD去除率达78%,UV254去除率高达81%。三维荧光光(3D-EEM)分析可知,芳香类和富里酸类物质在催化降解过程中得到有效去除。

Graphene Oxide-Loaded Nano-Fe3O4 Multiphase Fenton-Like Treatment for Pharmaceutical Wastewater

The modified Hummer method was used to prepare graphene oxide-loaded nano-Fe₃O₄(Fe₃O₄/GO)magnetic catalyst,and it was characterized by X-ray diffraction,scanning electron microscope and energy-dispersion spectrum,and it was applied to multi-phase Fenton treatment of high concentration chemical raw medicine production wastewater.The results showed that,Fe₃O₄ particles were successfully loaded on the surface of GO,and there was no obvious agglomeration phenomenon.When the pH of the wastewater was 3,the hydrogen peroxide(mass fraction of H₂O₂ was 30%)dosage was 10 mL/L,catalyst dosage was 2 g/L,the removal rate of COD after 120 min reaction was 78%,and the removal rate of UV-254 was as high as 81%.From the three-dimensional fluorescence spectroscopy(3 D-EEM)analysis,aromatics and fulvic acids were effectively removed during the catalytic degradation process.