| 氧化石墨烯负载零价纳米铁吸附水中环丙沙星的研究 |
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| 引用本文： | 姜鹏,李一兵,童雅婷,李建斐,兰华春,付明来,刘锐平.氧化石墨烯负载零价纳米铁吸附水中环丙沙星的研究[J].环境科学学报,2016,36(7):2443-2450. |
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| 作者姓名： | 姜鹏 李一兵 童雅婷 李建斐 兰华春 付明来 刘锐平 |
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| 作者单位： | 1. 河北工业大学 土木工程学院, 天津 300401;2. 中国科学院生态环境研究中心 中国科学院饮用水科学与技术重点实验室, 北京 100085;3. 中国科学院城市环境研究所 中国科学院城市污染物转化重点实验室, 厦门 361021,河北工业大学 土木工程学院, 天津 300401,1. 河北工业大学 土木工程学院, 天津 300401;2. 中国科学院生态环境研究中心 中国科学院饮用水科学与技术重点实验室, 北京 100085,1. 河北工业大学 土木工程学院, 天津 300401;2. 中国科学院生态环境研究中心 中国科学院饮用水科学与技术重点实验室, 北京 100085,中国科学院生态环境研究中心 中国科学院饮用水科学与技术重点实验室, 北京 100085,中国科学院城市环境研究所 中国科学院城市污染物转化重点实验室, 厦门 361021,中国科学院生态环境研究中心 中国科学院饮用水科学与技术重点实验室, 北京 100085 |
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| 基金项目： | 国家自然科学基金（No.51478455，51221892）；国家高技术研究发展计划（863）项目（No.2012AA062606） |
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| 摘 要： | 通过溶液还原法制备了氧化石墨烯负载零价纳米铁NZVI16-GO1(F16G1),并将其用于水中环丙沙星的去除.同时,采用X射线衍射仪(XRD)、场发射扫描电镜(FE-SEM)、能谱仪(EDS)和热重分析仪(TG)等手段表征了F16G1的结构、化学组成和微观形貌.结果发现,F16G1对水中环丙沙星具有良好的吸附性能;氧化石墨烯的引入可以有效降低零价纳米铁的自身团聚;F16G1与环丙沙星的吸附作用很大程度上受静电引力的影响.实验同时考察了p H值、反应时间、初始浓度、投加量等因素对F16G1吸附环丙沙星的影响.结果表明,在p H=4~5之间,溶液的p H值对吸附量没有明显影响;F16G1对环丙沙星的最大吸附量是656.66 mg·g-1;Langmuir等温吸附模型可以用来描述吸附平衡过程.零价纳米铁的磁性使复合材料便于回收.
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| 关 键 词： | 氧化石墨烯 零价纳米铁 吸附 环丙沙星 等温模型 |
| 收稿时间： | 2015/8/19 0:00:00 |
| 修稿时间： | 2015/11/16 0:00:00 |
Adsorption of ciprofloxacin from water using graphene oxide supported nanoscale zero valent iron |
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| JIANG Peng,LI Yibing,TONG Yating,LI Jianfei,LAN Huachun,FU Minglai and LIU Ruiping.Adsorption of ciprofloxacin from water using graphene oxide supported nanoscale zero valent iron[J].Acta Scientiae Circumstantiae,2016,36(7):2443-2450. |
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| Authors: | JIANG Peng LI Yibing TONG Yating LI Jianfei LAN Huachun FU Minglai and LIU Ruiping |
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| Institution: | 1. School of Civil Engineering, Hebei University of Technology, Tianjin 300401;2. Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085;3. Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021,School of Civil Engineering, Hebei University of Technology, Tianjin 300401,1. School of Civil Engineering, Hebei University of Technology, Tianjin 300401;2. Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,1. School of Civil Engineering, Hebei University of Technology, Tianjin 300401;2. Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021 and Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 |
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| Abstract: | Graphene oxide (GO) supported zero valent iron nanoparticles(NZVI), NZVI16-GO1(F16G1), were successfully synthesized by using liquid phase reduction method, and exhibited excellent adsorption of ciprofloxacin(CIP) in water. The structure, chemical composition and micro-morphology of F16G1 were characterized by using X-ray diffraction(XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive spectrometer(EDS) and thermogravimetric analysis(TG). It was found that the agglomeration of NZVI was remarkably inhibited by the introduction of GO. The electrostatic attraction showed significant influence on the adsorption of CIP onto F16G1. The effects of pH, reaction time, initial concentration and dosage on the removal efficiency of NZVI were investigated. No obvious change of adsorption capacity was detected with the pH ranging from 4 to 5.The maximum adsorption capacity of F16G1 was determined to be 656.66 mg·g-1, which could be fitted to the Langmuir adsorption isotherm. Furthermore, the inherent magnetic property of NZVI contributed to the easy recovery of composite adsorbents. |
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| Keywords: | graphite oxide nanoscale zero valent iron adsorption ciprofloxacin isothermal |
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