SCI和EI收录∣中国化工学会会刊

›› 2017, Vol. 25 ›› Issue (9): 1163-1169.DOI: 10.1016/j.cjche.2017.01.011

• Separation Science and Engineering • 上一篇    下一篇

Column adsorption of Cu(Ⅱ) by polymer-supported nano-iron oxides in the presence of sulfate:Experimental and mathematical modeling

Hui Qiu1,2, Xiaolin Zhang2, Zhe Xu2   

  1. 1 Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    2 State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
  • 收稿日期:2016-10-26 修回日期:2017-01-24 出版日期:2017-09-28 发布日期:2017-10-11
  • 通讯作者: Xiaolin Zhang,E-mail:XLZhang@nju.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21607080), the Natural Science Foundation of Jiangsu Province (BK20160946) and Jiangsu Higher Education Institution NSF (16KJB610011).

Column adsorption of Cu(Ⅱ) by polymer-supported nano-iron oxides in the presence of sulfate:Experimental and mathematical modeling

Hui Qiu1,2, Xiaolin Zhang2, Zhe Xu2   

  1. 1 Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    2 State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
  • Received:2016-10-26 Revised:2017-01-24 Online:2017-09-28 Published:2017-10-11
  • Supported by:
    Supported by the National Natural Science Foundation of China (21607080), the Natural Science Foundation of Jiangsu Province (BK20160946) and Jiangsu Higher Education Institution NSF (16KJB610011).

摘要: Polymer-supported hydrous iron oxides (HFOs) are promising for heavy metals removal from aqueous systems. The ubiquitous inorganic ligands, e.g., sulfate, are expected to exert considerable impacts on pollutants removal by these hybrid sorbents. Herein, we obtained a hybrid sorbent HFO-PS by encapsulating nanosized HFO into macroporous polystyrene (PS) resin. Both batch and column sorption experiments of Cu(Ⅱ) by HFO-PS were carried out in the presence of sulfate. Obviously, the presence of sulfate is favorable for Cu(Ⅱ) sorption onto HFO-PS. The performances of column Cu(Ⅱ) removal were fitted and predicted with Adams-Bohart, Clark, Thomas and BDST models. Thomas model is suggested best-fit to predict the breakthrough curves. Besides, a linear correlation is observed between breakthrough time and column length based on BDST model, which might be useful for predicting the breakthrough time for Cu(Ⅱ) removal by HFO-PS.

关键词: Composite, Nanotechnology, Waste water, Hydrous iron oxide, Fixed-bed adsorption, Thomas model

Abstract: Polymer-supported hydrous iron oxides (HFOs) are promising for heavy metals removal from aqueous systems. The ubiquitous inorganic ligands, e.g., sulfate, are expected to exert considerable impacts on pollutants removal by these hybrid sorbents. Herein, we obtained a hybrid sorbent HFO-PS by encapsulating nanosized HFO into macroporous polystyrene (PS) resin. Both batch and column sorption experiments of Cu(Ⅱ) by HFO-PS were carried out in the presence of sulfate. Obviously, the presence of sulfate is favorable for Cu(Ⅱ) sorption onto HFO-PS. The performances of column Cu(Ⅱ) removal were fitted and predicted with Adams-Bohart, Clark, Thomas and BDST models. Thomas model is suggested best-fit to predict the breakthrough curves. Besides, a linear correlation is observed between breakthrough time and column length based on BDST model, which might be useful for predicting the breakthrough time for Cu(Ⅱ) removal by HFO-PS.

Key words: Composite, Nanotechnology, Waste water, Hydrous iron oxide, Fixed-bed adsorption, Thomas model