弱磁场-H_(2)O_(2)协同驱动Fe^(0)降解氯霉素废水的研究  

Study on the weak magnetic field and H_(2)O_(2) simultaneous driven zero-valence iron for the degradation of antibiotics chloramphenicol wastewater

作　　者：王小蝶 于媛媛 李润瑶 张恩山 杨娜 申婷婷[1,2] 孙静[1,2] WANG Xiao-die;YU Yuan-yuan;LI Run-yao;ZHANG En-shan;YANG Na;SHEN Ting-ting;SUN Jing(School of Environmental Science and Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China;State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology,Shandong Academy of Sciences,Jinan 250353,China)

机构地区：[1]齐鲁工业大学(山东省科学院)环境科学与工程学院,山东济南250353 [2]齐鲁工业大学(山东省科学院)生物基材料与绿色造纸国家重点实验室,山东济南250353

出　　处：《齐鲁工业大学学报》2022年第3期24-31,共8页Journal of Qilu University of Technology

基　　金：国家级大学生创新创业训练计划项目(202110431079);生物基材料与绿色造纸国家重点实验室(齐鲁工业大学(山东省科学院))(ZZ20210124);齐鲁工业大学(山东省科学院)2018年度青年博士合作基金项目(2018BSHZ0021)。

摘　　要：采用外加弱磁场与零价铁Fe^(0)—H_(2)O_(2)构建的类Fenton体系对氯霉素(CAP)废水进行降解研究。首先通过单因素的实验确定最佳反应条件:CAP初始浓度10 mg/L,反应时间为210 min,Fe^(0)粒径100目,Fe^(0)投加量2.0 g,pH为3.0,外加磁场最佳为10.0 mT,H_(2)O_(2)的添加量为1.0 mL,搅拌速度为200 r/min。在此最佳条件下CAP降解率最高可达到86.3%。同时,在对该体系的机理研究中发现:弱磁场可有效促进Fe^(0)—H_(2)O_(2)对CAP的降解,其降解机理可归因于磁效应、Fe^(0)作用机理以及Fe^(0)/Fe^(2+)—H_(2)O_(2)构建的类Fenton反应的协同效应,该研究可以为CAP的去除及Fe^(0)的应用提供新的技术与方法。Weak magentic(WM)field modified zero-valent iron/hydrogen peroxide system was investigated for the degradation of chloramphenicol(CAP)wastewater.The operational conditions were first optimized due to the complexity.It was found that the degradation rate of CAP wastewater can reach 86.3%under the optimal conditions of the initial concentration of CAP of 10 mg/L,and pH of 3.0;the particle size of iron powder of 100 mesh,the dosage of iron powder of 2.0 g,the reaction time of 210 min,hydrogen peroxide dosing 1.0 mL,the intensity of magentic field 10 mT and the stirring speed was 200 r/min.The results indicated that weak magentic field and H_(2)O_(2)could promote the oxidation properties of zero-valent iron system,which was involved in the synergestic mechanisms of Fe^(0)catalysis,Fenton-like process of Fe^(2+) and the magnetic promotion mechanism.The investigation is supposed to provide a new strategy for the removal of CAP and develop a novel pathway for the application of Fe^(0).

关 键 词：氯霉素 零价铁 弱磁场 过氧化氢 催化降解 

分 类 号：X131.2[环境科学与工程—环境科学]