无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2011, Vol. 43 ›› Issue (8): 21-.

• 论文 • 上一篇    下一篇

不同沸石吸附铅离子的对比研究

李学峰1,朱蕾1,高焕新2,陈庆龄2   

  1. 1. 许昌学院化学化工学院,河南许昌 461000;2. 中国石化上海石油化工研究院
  • 出版日期:2011-08-10 发布日期:2011-08-10

Comparative study on adsorbing Pb2+ with various zeolites

Li Xuefeng1,Zhu Lei1,Gao Huanxin2,Chen Qingling2   

  1. 1.School of Chemisty and Chemical Engineering,Xuchang University,Xuchang 461000,China;2.SINOPEC Shanghai Research Institute of Petrochemical Technology
  • Online:2011-08-10 Published:2011-08-10

摘要: 沸石吸附去除水中金属离子具有高效、可重复利用的优点。对比研究了ZSM-5、Y、Beta这3种沸石对铅(Ⅱ)的吸附性能,分别考察了沸石用量、pH、吸附时间、铅(Ⅱ)的初始浓度对铅(Ⅱ)的吸附去除率的影响。结果表明,在相同条件下,Beta沸石比其他2种沸石具有有更好的铅(Ⅱ)吸附性能;当吸附剂质量浓度为4 g/L、pH=6、吸附时间为140 min时,Beta沸石的铅(Ⅱ)吸附率可达94.4%。3种沸石的平衡吸附量与吸附平衡质量浓度之间的关系较好地符合Freundlich 和Langmuir等温方程所描述的规律。

关键词: 沸石, 铅离子, 吸附, 等温方程

Abstract: It is a highly effective and reusable method for removal of metal ions in water using zeolites as absorbents.Adsorption performances of ZSM-5,Y,and Beta three different zeolites on Pb2+ were comparatively studied.Effects of zeolite dosage,pH,adsorbing time,and initial Pb2+ concentration on the adsorbing ratio of Pb2+ were investigated,respectively.Results showed Beta zeolite performed the best under the same conditions.A 94.4% of Pb2+ adsorbing ratio was obtained at the conditions of 4 g/L of adsorbent dosage,6 of pH,and 140 min of adsorbing time.The relatingships between the absorbing capacity and equilibrium mass concentration for the three zeolites were all in good accordance with the isothermal adsorption equations of Freundlich and Langmuir,respectively.

Key words: zeolites, Pb2+, adsorption, isothermal equations

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