王春峰,朱艳臣,陈冠飞,姚丹,皇晓晨,王连军

• 1:河南师范大学环境学院黄淮水环境与污染防治教育部重点实验室河南省环境污染控制重点实验室
• 2:南京理工大学环境与生物工程学院江苏省化工污染控制与资源化重点实验室

摘要(Abstract)：

利用机械球磨法将零价铁(Fe~0)颗粒负载到疏水性、高硅比的ZSM-5分子筛上,成功制备出Fe~0/ZSM-5复合材料,研究了此复合材料对水溶液中Pb~(2+)的去除性能。XRD结果表明,Fe~0/ZSM-5复合材料保持了ZSM-5分子筛的晶体结构,元素点映射表明零价铁颗粒均匀地负载在ZSM-5分子筛上。实验结果表明,在30℃,初始Pb~(2+)浓度为1~100mg·L~(-1),pH值为3.0,Fe~0/ZSM-5复合材料投加量为0.2 g·L~(-1),反应时间为60 min条件下,Pb~(2+)的最大去除率和最高吸附量分别为78.05%和102 mg·g~(-1)。研究发现在去除Pb~(2+)的过程中伴随着Fe~(2+)的释放以及pH值的升高,且反应过程中释放出Fe~(2+)会加速Fe~0表面的给电子过程,增加其表面活性位点,进而进一步提升对Pb~(2+)的还原去除。研究表明,反应过程符合一级反应动力学。

关键词(KeyWords)： 机械球磨;零价铁;ZSM-5分子筛;Pb2+

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(5201219120004);; 河南省科技攻关计划项目(142102210457);; 河南省教育厅科学技术研究重点项目(13A610514)

作者(Author): 王春峰,朱艳臣,陈冠飞,姚丹,皇晓晨,王连军

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