Preparation and properties of hollow fiber membrane for MABR

化学工业与工程

Chemcial Industry and Engineering

2025, Vol. 42

Issue (2) :80-88 DOI: 10.13353/j.issn.1004.9533.20230163

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Preparation and properties of hollow fiber membrane for MABR

JI Qingyuan^1,2, XIE Lixin^1,2, WU Yixuan^1,2, XU Shichang^1,2

1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300350, China

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Abstract The polypropylene hollow fiber membranes were prepared by the thermally induced phase separation method and the effect of preparing conditions on the properties of membranes was investigated in this paper. The resulted hollow fiber membranes have the advantage of narrow pore size distribution and high bubble point pressure. We also modified the membranes by the co-deposition of catechol (CCh) and polyethyleneimine (PEI). After the modification, the membranes have lower contact angle and higher Zeta potential. Membrane aerated biofilm reactor (MABR) experiments reveal that the modified membranes take less time to complete bioadhesion and the total oxygen transfer coefficient increases by about 3 times, with a COD degradation rate of 89.0% and an ammonia nitrogen degradation rate of 89.3%. The modified membranes also show good anti-fouling ability. After the continuous operation for 20 d, the decrease of modified membranes in total oxygen transfer coefficient is 4.6%, much less than that of the original membranes (27.9%).

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	JI Qingyuan
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	WU Yixuan
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Keywords： membrane aerated biofilm reactor (MABR) surface modification hollow fiber membranes thermally induced phase separation catechol polyethyleneimide

Received 2023-04-13;

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JI Qingyuan, XIE Lixin, WU Yixuan, XU Shichang.Preparation and properties of hollow fiber membrane for MABR[J] Chemcial Industry and Engineering, 2025,V42(2): 80-88

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