磁改性活性炭-非均相类Fenton体系去除水中四环素  

Removal of tetracycline from water by a magnetically modified activated carbon-non-homogeneous Fenton system

作　　者：陈玉 杨英 王娣[1,2] 费维繁 李卫华 Chen Yu;Yang Ying;Wang Di;Fei Weifan;Li Weihua(School of Environmental and Energy Engineering,Anhui Jianzhu University,Hefei,230601,China;Anhui Provincial Key Laboratory of Water Pollution Control and Wastewater Resourcing,Anhui Jianzhu University,Hefei,230601,China)

机构地区：[1]安徽建筑大学环境与能源工程学院,合肥230601 [2]安徽建筑大学水污染控制与废水资源化安徽省重点实验室,合肥230601

出　　处：《南京大学学报（自然科学版）》2023年第5期865-876,共12页Journal of Nanjing University（Natural Science）

基　　金：国家自然科学基金(21677001);安徽省科技重大专项(201903a06020034,17030801028);安徽省住房城乡建设科学技术计划项目(2023-RK025);安徽省教育厅研究生质量工程项目(2022jyjxggyj314)。

摘　　要：环境中四环素(Tetracycline,TC)污染及去除是当前研究的热点问题,用粉末活性炭(Activated Carbon,AC)制备磁改性活性炭(Magnetic-modified Activated Carbon,MAC),建立以去除TC为目标的磁改性活性炭-非均相类Fenton体系,四氧化三铁(Fe3O4)赋予了AC磁性,并可以作为非均相类Fenton反应的催化剂,该体系结合了活性炭法的吸附与非均相类Fenton法的降解,能够更高效地去除TC.通过SEM,EDS,FTIR和XPS对反应前后的MAC形貌、结构以及官能团进行分析,探讨该体系对TC的作用机理.同时考察了时间、MAC投加量、H2O2投加量、溶液的pH对MAC去除TC溶液的影响.结果表明,在TC浓度为50 mg·L^(-1)时,初始pH为3,MAC投加量为0.6 g·L^(-1),H_(2)O_(2)投加量为5.0 mmol·L^(-1),为该体系的最佳运行条件.The pollution and removal of tetracycline(TC)in the environment is a hot issue in current research.In this study,magnetic-modified activated carbon(MAC)was prepared from powdered activated carbon(AC)to establish a magnetic-modified activated carbon-non-homogeneous Fenton system targeting the removal of TC.Ferrosoferric Oxide(Fe:O4)imparts magnetic properties to AC and can be used as a catalyst for non-homogeneous Fenton reaction,which combines the adsorption of the activated carbon method with the degradation of the non-homogeneous Fenton method,which can remove TC more efficiently.The morphological structure of MAC and the functional groups before and after the reaction were analyzed by SEM,EDS,FTIR and XPS,and the mechanism of the action of the system on TC was analyzed.The effects of adsorption time,MAC dosage,H,O,dosage,and pH of the solution on the adsorption of TC solution by MAC were also investigated.The results showed that the optimum operating conditions for the system were 50 mg·L^(-1) of tetracycline,an initial pH of 3,a MAC dosage of 0.6 g·L^(-1),and an H,O,dosage of 5.0 mmol·L^(-1).

关 键 词：四环素 磁性改性活性炭 吸附 降解 耦合体系 回收利用 

分 类 号：X703[环境科学与工程—环境工程]