工业水处理 ›› 2009, Vol. 29 ›› Issue (8): 62-65. doi: 10.11894/1005-829x.2009.29(8).62

• 试验研究 • 上一篇    下一篇

离子交换纤维除As(Ⅴ)性能研究

刘振中1,2, 邓慧萍2, 韩瑛1, 李越3   

  1. 1. 南昌大学建筑工程学院, 江西 南昌 330031;
    2. 同济大学环境科学与工程学院, 上海 200092;
    3. 珠江水利科学研究院, 广东 广州 510611
  • 收稿日期:2009-05-25 修回日期:2009-05-25 出版日期:2009-08-20 发布日期:2010-10-01
  • 作者简介:刘振中(1979- ),在读博士生,讲师,研究方向:水处理理论与技术.电话:13755797758,E-mail:liuzz79@126.com.
  • 基金资助:

    南昌大学基金项目(Z03995)

Research on As(Ⅴ) removal performance of ion exchange fiber

Liu Zhen-zhong1,2, Deng Hui-ping2, Han Ying1, Li Yue3   

  1. 1. School of Architecture Engineering, Nanchang University, Nanchang 330031, China;
    2. School of Environmenal Science and Engineering, Tongji University, Shanghai 200092, China;
    3. Pear River Water Resource Scientific Research Institute, Guangzhou 510611, China
  • Received:2009-05-25 Revised:2009-05-25 Online:2009-08-20 Published:2010-10-01

摘要:

研究比较了几种吸附材料的除As(Ⅴ)性能,结果发现,颗粒活性炭的除As(Ⅴ)效果较差,活性氧化铝对As(Ⅴ)有一定的去除效果,离子交换纤维(IEF)除As(Ⅴ)的效果最好.作者着重研究了IEF除As(Ⅴ)的吸附等温线和反应动力学,考察了pH、共存阴离子对IEF除As(Ⅴ)的影响.研究发现,Freundlich吸附等温线模型要好于Langmuir模型.吸附速率符合拟一级反应动力学.IEF的除As(Ⅴ)潜力较大,在As(Ⅴ)初始质量浓度为25mg/L时,其吸附As(Ⅴ)的能力达285mg/g.pH偏酸性有利于吸附的进行.但共存离子的存在影响砷的吸附,通过负载铁到IEF上,可有效地解决这一问题,且总的吸附As(Ⅴ)的能力有一定的提高.

关键词: 吸附, 除砷, 离子交换纤维, 反应动力学

Abstract:

The As(Ⅴ) removal performances of several kinds of adsorbents have been studied.The results show that the As(Ⅴ) removal efficiency of granular activated carbon is rather low, activated aluminium oxide has some As(Ⅴ) removal efficiency, and the As(Ⅴ) removal efficiency of ion exchange fiber is the best.The adsorption isotherm and reaction kinetics of As(Ⅴ) removal on IEF are mainly studied.At the same time, the effect of pH and co-exist anions on the As(Ⅴ) removal are investigated.It is found that the Freundlich adsorption isotherm model is better than Langmuir model.The adsorption velocity accords with pseudo-first order reaction kinetics.IEF has some potential to remove As ( Ⅴ ).When the initial mass concentration of As ( Ⅴ ) is 25 mg/L, its adsorption capacity is 285 mg/g.The adsorption was favored with lower pH.But the presence of co-exist anions can influence as adsorption.The problem can be solved effectively by loading iron oxide on IEF and the total adsorption capacity of As(Ⅴ) can be improved.

Key words: adsorption, arsenic removal, ion exchange fiber, reaction kinetics

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