膜科学与技术

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Preparation of Composite Nanofiltration Membranes with Positive Charges by Surface Grafting Method and Their Mg-Li Separation Properties

Authors： Zhang Zhenlin, Wang Lu, Cheng Liang, Yang hu, Tang Yongjian, Xu Zhenliang

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

KeyWords： surface grafting; nanofiltration membrane; graphene oxide; Mg-Li separation

ClassificationCode：TQ028

year,volume(issue):pagination： 2024,44(2):1-7

Abstract：

PA nanofiltration membranes were prepared by interfacial polymerization of piperazine(PIP) and trimesoyl chloride(TMC) as the base membrane, and PEI-GOS nanofiltration membranes were prepared by surface grafting using a mixture of polyethyleneimine (PEI) and graphene oxide (GO).The results showed that the PEI-GOS nanofiltration membrane has a dense and smooth polyamide layer with a large positive charge on the membrane surface, and the pure water flux can reach 50.1 L·m-2·h-1·MPa-1 with excellent retention performance of Mg2+. The Mg-lithium separation factor of PEI-GOS nanofiltration membrane can reach 38.1, which has excellent Mg-Li separation performance.

Funds：

国家自然科学基金（22078092, 22278132，21978082）

AuthorIntro：

张桢琳（1998-），男，四川成都市人，硕士生，研究方向为膜制备与应用

Reference：

[1]乜贞, 伍倩, 丁涛,等. 中国盐湖卤水提锂产业化技术研究进展[J]. 无机盐工业,2022,54(10):1-12.
[2]张秀峰, 谭秀民, 张利珍. 纳滤膜分离技术应用于盐湖卤水提锂的研究进展[J]. 无机盐工业,2017,49(1):1-5.
[3]Mohammad A W, Teow Y H, Ang W L, et al. Nanofiltration membranes review: Recent advances and future prospects[J]. Desalination, 2015, 356: 226-254.
[4]Bowen W R, Mukhtar H. Characterisation and prediction of separation performance of nanofiltration membranes[J]. Journal of membrane science, 1996, 112(2): 263-274.
[5]Xu P, Wang W, Qian X, et al. Positive charged PEI-TMC composite nanofiltration membrane for separation of Li+ and Mg2+ from brine with high Mg2+/Li+ ratio[J]. Desalination, 2019, 449: 57-68.
[6]Demeneix B, Behr J P. Polyethylenimine (PEI)[J]. Advances in genetics, 2005, 53: 215-230.Gao W. The chemistry of graphene oxide[J]. Graphene oxide: reduction recipes, spectroscopy, and applications, 2015: 61-95.
[7]Seabra A B, Paula A J, de Lima R, et al. Nanotoxicity of graphene and graphene oxide[J]. Chemical research in toxicology, 2014, 27(2): 159-168.
[8]温书, 张文娟, 杜海洋,等. 氧化石墨烯在纳滤膜改性中的应用[J]. 膜科学与技术,2022,42(2):190-198.
[9]Feng Y, Peng H, Zhao Q. Fabrication of high performance Mg2+/Li+ nanofiltration membranes by surface grafting of quaternized bipyridine[J]. Separation and Purification Technology, 2022, 280: 119848.
[10]Liang S, Zhu L, Wang S, et al. Fast Reduced Graphene-Based Membranes with High Desalination Performance[J]. Membranes, 2021, 11(11): 846.
[11]Shao W, Liu C, Yu T, et al. Constructing positively charged thin-film nanocomposite nanofiltration membranes with enhanced performance[J]. Polymers, 2020, 12(11): 2526.
[12]Yang M, Zhao C, Zhang S, et al. Preparation of graphene oxide modified poly (m-phenylene isophthalamide) nanofiltration membrane with improved water flux and antifouling property[J]. Applied Surface Science, 2017, 394: 149-159.
[13]Wu H, Zhao H, Lin Y, et al. Positively-charged PEI/TMC nanofiltration membrane prepared by adding a diamino-silane coupling agent for Li+/Mg2+ separation[J]. Journal of Membrane Science, 2023, 672: 121468.

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