PVAm–PIP/PS Composite Membrane with High Performance for CO2/N2 Separation

Authors

  • Zhihua Qiao,

    1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
    2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, P.R. China
    3. Dept. of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin, P.R. China
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  • Zhi Wang,

    Corresponding author
    1. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, P.R. China
    2. Dept. of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin, P.R. China
    • Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
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  • Chenxin Zhang,

    1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
    2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, P.R. China
    3. Dept. of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin, P.R. China
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  • Shuangjie Yuan,

    1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
    2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, P.R. China
    3. Dept. of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin, P.R. China
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  • Yaqun Zhu,

    1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
    2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, P.R. China
    3. Dept. of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin, P.R. China
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  • Jixiao Wang,

    1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
    2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, P.R. China
    3. Dept. of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin, P.R. China
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  • Shichang Wang

    1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China
    2. Dept. of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin, P.R. China
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Correspondence concerning this article should be addressed to Z. Wang at wangzhi@tju.edu.cn.

Abstract

Polyvinylamine (PVAm) was modified using a cross-linking agent containing carriers piperazine (PIP). Attenuated total reflectance fourier transform infrared, elemental analyzer, and X-ray diffraction were used to characterize the PIP-modified PVAm. The PVAm–PIP/polysulfone (PS) composite membrane was developed by coating PVAm–PIP mixed solutions with different mass ratios of PIP/PVAm (mPIP/mPVAm) on the PS ultrafiltration membrane. The effects of mPIP/mPVAm (from 0.715 to 2.860) in the coating solutions and wet coating thickness on the gas performance of the PVAm–PIP/PS composite membrane were investigated. The PVAm–PIP/PS composite membrane prepared showed higher performance than other membranes reported in the literature due to the large increase of the introducing carrier concentration and low crystallinity. Moreover, the separation performance stability of the PVAm–PIP/PS composite membrane was investigated and no deterioration in the membrane permselectivity was observed. Finally, the economic evaluation of the membrane with the highest performance prepared was carried out. © 2012 American Institute of Chemical Engineers AIChE J, 59: 215–228, 2013

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