Fe3O4/Mg（OH）2复合材料的制备及对铅离子的移除应用  

Preparation of Fe3O4/Mg（OH）2 Composites and its Application in Removing Lead Ions from Aqueous Solutions

作　　者：韩文生 时东[1,2] 张禹泽 李娜 宋福根 李丽娟[1,2,3] HAN Wen-sheng;SHI Dong;ZHANG Yu-ze;LI Na;SONG Fu-gen;LI Li-juan(Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Salt Lake Resources Development,Xining 810008,China;University of Chinese Academy of Sciences,Beijing,100049,China)

机构地区：[1]中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海西宁810008 [2]青海省盐湖资源开发工程技术研究中心,青海西宁810008 [3]中国科学院大学,北京100049

出　　处：《盐湖研究》2019年第4期23-27,共5页Journal of Salt Lake Research

基　　金：青海科技部资助项目(2016GX-145);江苏省宜兴市重点研发项目(YGB2017004)

摘　　要：通过种子沉积法制备出Fe3O4/Mg(OH)2复合材料并进行了XRD、SEM、TEM、SAED测试分析。将该复合材料对水溶液中Pb2+进行移除应用实验,接触时间为240 min时达到平衡。平衡时,水溶液中的Pb2+超过90%被移除,移除量为950.8 mg/g。通过动力学研究发现,移除过程符合准二级动力学模型,这意味着移除过程中可能为化学吸附及沉淀过程。Fe3O4/Mg(OH)2,a kind of novel composites were prepared by seed deposition method in this paper.The structures of composites were analyzed by XRD,SEM,TEM and SAED,and the removal of Pb2+ ions in aqueous solutions was investigated.The results indicated that the removal equilibrium could be achieved at the contact time of 240 min,and the removal efficiency for the Pb2+ ions was more than 90%,with a high removal capacity of 950.8 mg/g.The removal kinetic accorded with the quasi-two kinetic model,which showed a chemical adorption and precipitation process involved in removed.

关 键 词：铅离子 废水 复合材料 氢氧化镁 

分 类 号：TQ129[化学工程—无机化工]