Surface modification of polypiperazine-amide membrane by self-assembled method for dye wastewater treatment

Yong Zhou; Zhenan Dai; Ding Zhai; Congjie Gao

doi:10.1016/j.cjche.2015.01.005

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Surface modification of polypiperazine-amide membrane by self-assembled method for dye wastewater treatment

分离科学与工程 | Updated：2026-01-06

- Surface modification of polypiperazine-amide membrane by self-assembled method for dye wastewater treatment
- Chinese Journal of Chemical Engineering Issue 6, Pages: 912-918(2015)
- Affiliations：
  
  1. The Development Center of Water Treatment Technology, State Oceanic Administration,Hangzhou,China,310012
  2. 2 Zhejiang Sci-Tech University,Hangzhou,China,310018
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.01.005
  CLC：
- Published：2015
- Accepted：
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Yong Zhou, Zhenan Dai, Ding Zhai, et al. Surface modification of polypiperazine-amide membrane by self-assembled method for dye wastewater treatment[J]. Chinese Journal of Chemical Engineering, 2015, (6): 912-918.
DOI：

Yong Zhou, Zhenan Dai, Ding Zhai, et al. Surface modification of polypiperazine-amide membrane by self-assembled method for dye wastewater treatment[J]. Chinese Journal of Chemical Engineering, 2015, (6): 912-918. DOI： 10.1016/j.cjche.2015.01.005.

摘要

Abstract

Polypiperazine-amide membranes were modified with poly(ethyleneimine) (PEI) by self-assembled method

through which PEI molecules were fixed on the membrane surface by ionic interaction. In the experiments

the PEI concentration ranged from50 to 2000 mg·L

-1

while the depositing time was fixed at 20 min. The results showed that low PEI concentration resulted in a slight increase of pure water flux

which was attributed to the enhanced membrane surface hydrophilicity. The PEI adsorption on membrane surface had less effect on the rejections to neutral PEG and sucrose

but improved the rejections to divalent cationic ions and methylene blue as the result of reversion of the membrane surface charge from negative to positive according to the XPS analysis and zeta potential measurements. The membrane modified at PEI = 1500 mg·L

-1

exhibited high rejection to methylene blue (MB) and is potential to be applied in the treatment of effluents containing positively charged dyes.

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