DOPA/PEI surface-modified poly-4-methyl-1-pentene membranes and application in membrane aeration biofilm reactor

Yue Zhou; Wenjun Li; Hongjun Hu; Zhaohui Wang; Zhaoliang Cui

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DOPA/PEI surface-modified poly-4-methyl-1-pentene membranes and application in membrane aeration biofilm reactor

Updated：2026-01-06

- DOPA/PEI surface-modified poly-4-methyl-1-pentene membranes and application in membrane aeration biofilm reactor
- DOPA/PEI surface-modified poly-4-methyl-1-pentene membranes and application in membrane aeration biofilm reactor
- 中国化学工程学报（英文版） 2025年77卷第1期页码：114-122
- Affiliations：
  
  1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University,Nanjing,China,210009
  2. National Engineering Research Center for Special Separation Membrane, Nanjing Tech University,Nanjing,China,210009
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2025
- Accepted：
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Yue Zhou, Wenjun Li, Hongjun Hu, 等. DOPA/PEI surface-modified poly-4-methyl-1-pentene membranes and application in membrane aeration biofilm reactor[J]. 中国化学工程学报（英文版）, 2025,77(1):114-122.

Yue Zhou, Wenjun Li, Hongjun Hu, Zhaohui Wang, Zhaoliang Cui. DOPA/PEI surface-modified poly-4-methyl-1-pentene membranes and application in membrane aeration biofilm reactor[J]. Chinese Journal of Chemical Engineering, 2025, 77(1): 114-122.
Yue Zhou, Wenjun Li, Hongjun Hu, 等. DOPA/PEI surface-modified poly-4-methyl-1-pentene membranes and application in membrane aeration biofilm reactor[J]. 中国化学工程学报（英文版）, 2025,77(1):114-122. DOI：

Yue Zhou, Wenjun Li, Hongjun Hu, Zhaohui Wang, Zhaoliang Cui. DOPA/PEI surface-modified poly-4-methyl-1-pentene membranes and application in membrane aeration biofilm reactor[J]. Chinese Journal of Chemical Engineering, 2025, 77(1): 114-122. DOI：

摘要

Abstract

The membrane aeration biofilm reactor (MABR) represents an innovative approach to wastewater treatment

integrating gas separation membranes with biofilm process and demonstrating effectiveness in treating wastewater rich in ammonia nitrogen. In this system

hollow fiber membranes are essential

serving as a substrate for biofilm attachment while facilitating oxygen transfer to microorganisms through aeration

hydrophobic microporous membranes are utilized in MABR applications. This study focuses on the use of poly-4-methyl-1-pentene (PMP) hollow fiber membranes

which exhibit superior oxygen permeation capabilities compared to traditional hydrophobic microporous membranes. To overcome the challenges posed by the hydrophobic nature and low bubble point of PMP microporous membranes

a hydrophilic modification was conducted using dopamine/poly(ethyleneimine) (DOPA/PEI) co-deposition to enhance microbial adhesion on the membrane surface. The composite membrane modified with DOPA/PEI exhibited an approximately 20% higher NH

-N removal efficiency than the unmodified membrane. These findings suggest that the incorporation of DOPA/PEI significantly improves MABR performance

underscoring its potential for further research and development in membrane technology for MABR.

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