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Effect of solvent rinse on preparation of hollow fiber polyamide nanofiltration membrane by interfacial polymerization

Authors： Lei Jianhui, Shen Yue, Wu Bin, Wang Naixin, An Quan-Fu

Units： Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China

KeyWords： Nanofiltration; Hollow fiber; Interfacial polymerization; Solvent rinse; Internal pressure

ClassificationCode：TQ 028

year,volume(issue):pagination： 2022,42(6):48-56

Abstract：

The home-made polysulfone (PSf) hollow fiber ultrafiltration membrane was used as substrate to prepare internal pressure hollow fiber nanofiltration membrane through interfacial polymerization reaction. Piperazine was used as the aqueous phase monomer, while trimesoyl chloride was used as the organic phase monomer. The solvent rinse speed was investigated to optimize the nanofiltration performance. Moreover, the preparation conditions such as piperazine concentration, trimesoyl chloride concentration and reaction time were also studied. The surface morphology and chemical structure of the hollow fiber membrane were characterized by SEM and FTIR. Under the optimum conditions, the pure water permeance of the internal pressure hollow fiber nanofiltration membrane was 124 L/m2 h MPa. The order of rejection for different inorganic salts was Na2SO4 (97.71%) > MgSO4 (95.08%) > CaCl2 (54.44%) > NaCl (16.18%).

Funds：

国家自然科学基金项目（22125801）

AuthorIntro：

雷建辉（1996-），男，湖南郴州人，硕士生，主要从事纳滤膜的制备研究

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