膜科学与技术

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Study on the improvement of three-channel capillary thin-film composite NF membrane and its performance

Authors： SUN Jingying, ZHANG Haizhen, MU Tong, XU Zhenliang

Units： State Key Laboratory of Chemical Engineering, Membrane Science and Engineering R&D Lab, Chemical Engineering Research Center, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237

KeyWords： UiO-66-NH2; interfacial polymerization; nanofiltration membrane; surfactants

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2020,40(5):31-38

Abstract：

Positive charged three-channel capillary thin-film composite (TFC) nanofiltration (NF) membrane was prepared via interfacial polymerization using PEI, PIP and UiO-66-NH2 as aqueous monomers and TMC as organic monomers. The effects of different UiO-66-NH2 additive amounts on the structure and performance of the prepared membrane were discussed. The NF membranes were characterized by Fourier infrared spectroscopy (ATR-RTIR), scanning electron microscopy (SEM), AFM, water contact angle and Zeta potential. The results showed that adding UiO-66-NH2 nanoparticles resulted in a large number of folds on the membrane surface, which increased surface area, enhanced hydrophilicity and improved permeability. When the additive amount was 0.005wt %, pure water flux of NF membrane M-2 was 111 Lm-2h-1 MPa-1, which can be used for the separation of cationic surfactant simulated wastewater. NF membrane M-2 for hexadecyl trimethylammonium bromide was higher than 95%, showing a good removal ability to cationic surfactants.

Funds：

教育部高校基本业务费项目(JKA012011001和 JKA012011017)和国家科技部支撑计划项目(2015BAB09B01)

AuthorIntro：

孙晶莹(1995-)，女，江苏江阴，研究生在读，主要从事纳滤膜制备及其水处理研究工作。

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