SCI和EI收录∣中国化工学会会刊

›› 2014, Vol. 22 ›› Issue (11/12): 1187-1192.DOI: 10.1016/j.cjche.2014.09.035

• 分离科学与工程 • 上一篇    下一篇

Removal of Aniline from Wastewater Using Hollow Fiber Renewal Liquid Membrane

Zhongqi Ren, Xinyan Zhu, Wei Liu, Wei Sun, Weidong Zhang, Junteng Liu   

  1. Beijing Key Laboratory of Membrane Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
  • 收稿日期:2013-04-20 修回日期:2014-01-02 出版日期:2014-12-28 发布日期:2014-12-24
  • 通讯作者: Zhongqi Ren
  • 基金资助:
    Supported by the Programfor NewCentury Excellent Talents in University (NCET-10- 0210) and the National Natural Science Foundation of China (21076011 and 21276012).

Removal of Aniline from Wastewater Using Hollow Fiber Renewal Liquid Membrane

Zhongqi Ren, Xinyan Zhu, Wei Liu, Wei Sun, Weidong Zhang, Junteng Liu   

  1. Beijing Key Laboratory of Membrane Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2013-04-20 Revised:2014-01-02 Online:2014-12-28 Published:2014-12-24
  • Supported by:
    Supported by the Programfor NewCentury Excellent Talents in University (NCET-10- 0210) and the National Natural Science Foundation of China (21076011 and 21276012).

摘要: Hollow fiber renewal liquidmembrane (HFRLM)methodwas proposed based on the surface renewal theory for removal of aniline from waste water. The system of aniline + D2EHPA in kerosene + HCl was used. Aqueous layer diffusion in the feed phase is the rate-control step, and the influence of lumen side flow rate on the mass transfer is more significant than that on the shell side. The resistance of overall mass transfer is greatly reduced because of the mass transfer intensification in the renewal of liquid membrane on the lumen side. The driving force of mass transfer can be considered as a function of distribution equilibrium, and the overall mass transfer coefficient increases with the increase of pH in the feed solution, HCl concentration and D2EHPA concentration, and decreases with the increase of initial aniline concentration. A mass transfermodel is developed forHFRLMbased on the surface renewal theory. The calculated results agree well with experimental results. The HFRLM process is a promising method for aniline wastewater treatment.

关键词: Aniline, Wastewater treatment, Hollow fiber renewal liquid membrane, Mathematic model, Mass transfer

Abstract: Hollow fiber renewal liquidmembrane (HFRLM)methodwas proposed based on the surface renewal theory for removal of aniline from waste water. The system of aniline + D2EHPA in kerosene + HCl was used. Aqueous layer diffusion in the feed phase is the rate-control step, and the influence of lumen side flow rate on the mass transfer is more significant than that on the shell side. The resistance of overall mass transfer is greatly reduced because of the mass transfer intensification in the renewal of liquid membrane on the lumen side. The driving force of mass transfer can be considered as a function of distribution equilibrium, and the overall mass transfer coefficient increases with the increase of pH in the feed solution, HCl concentration and D2EHPA concentration, and decreases with the increase of initial aniline concentration. A mass transfermodel is developed forHFRLMbased on the surface renewal theory. The calculated results agree well with experimental results. The HFRLM process is a promising method for aniline wastewater treatment.

Key words: Aniline, Wastewater treatment, Hollow fiber renewal liquid membrane, Mathematic model, Mass transfer