Fe/Ag催化臭氧氧化降解苯酚的研究  

Fe/Ag Catalytic Ozonation for the Degradation of Phenol

作　　者：侯颖 徐锦明 李平[1] 毛君妍 张原浩 宿俊杰 陈男[1] 胡伟武[1] HOU Ying;XU Jinming;LI Ping;MAO Junyan;ZHANG Yuanhao;SU Junjie;CHEN Nan;HU Weiwu(School of Water Resources and Environment,China University of Geosciences,Beijing 100083,China;School of Science,China University of Geosciences,Beijing 100083,China;School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China)

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083 [2]中国地质大学(北京)数理学院,北京100083 [3]南京理工大学材料科学与工程学院,江苏南京210094

出　　处：《现代地质》2021年第3期711-719,共9页Geoscience

基　　金：中国地质大学(北京)大学生创新创业训练计划项目(2018AX101)。

摘　　要：为研究双金属催化剂去除有机污染物的效果,采用自制Fe/Ag催化剂对模拟苯酚废水进行了臭氧催化氧化处理。通过扫描电子显微镜(SEM)、比表面积分析仪(BET)和X射线衍射(XRD)对催化剂进行表征,并考察了催化剂类型、催化剂投加量和溶液初始pH值对降解效果的影响规律。结果表明:与Fe相比,Fe/Ag比表面积减少了22.8%,在Fe/Ag/O_(3)与含苯酚废水的反应体系中,反应遵循臭氧直接作用和活性自由基(·OH、·O_(2)、H_2O_(2))共同作用的机理;Fe/Ag在反应过程中体现出良好的协同作用;300 mg/L的苯酚模拟废水在pH=6.3、Fe/Ag投加量为1.00 g的最优反应条件下经60 min反应,苯酚与化学需氧量(COD)去除率比单独臭氧氧化分别提高了18.4%和29.4%。To study the effect of bimetallic catalysts on the removal of organic pollutants,the simulated phenol wastewater was subjected to Fe/Ag catalytic ozonation treatment.The catalyst was characterized by various characterization methods(SEM,BET and XRD),and the degradation effects due to the different catalyst types and dosages and initial pH were evaluated.The results show that compared with Fe,the specific surface area of Fe/Ag is reduced by 22.8%.In the reaction system of Fe/Ag/O_(3) and phenol-containing wastewater,the reaction follows the mechanism of direct action of ozone and the free radicals(·OH,·O_(2),H2O_(2)).Fe/Ag and ozone show good synergistic effects in the reaction.The phenol and COD removal rate were,respectively,18.4%and 29.4%higher than that of ozone oxidation alone(initial phenol concentration=300 mg/L,catalysts dosage=1.00 g,and initial solution pH=6.3).

关 键 词：臭氧催化氧化 Fe/Ag 苯酚 协同作用 自由基 

分 类 号：P641.3[天文地球—地质矿产勘探] X131.2[天文地球—地质学]