膜科学与技术

位置：首页 >> 期刊内容阅读

CMC/PPy/PVDF复合膜的制备及其染料/盐分离性能

作者：唐峰玲，杨景，张子旭，刘子天，马文松，程琦，杨旭，徐美娜，王启莹，尚慧洋，吴昊，何瑷衫，林立刚

单位：天津工业大学材料科学与工程学院，省部共建分离膜与膜过程国家重点实验室

关键词：水凝胶；聚吡咯；膜分离；染料/盐分离

DOI号： 10.16159/j.cnki.issn1007-8924.2024.05.014

分类号： TQ028.8

出版年,卷(期):页码： 2024,44(5):117-124

摘要：

在印染废水处理中，如何高效地分离染料/盐废水是一个亟待解决的问题.为实现高效染料/盐选择性分离及提高膜的通量,以聚偏氟乙烯(PVDF)为基膜，在单宁酸辅助下羧甲基纤维素(CMC)凝胶通过层层交联的方式构建稳定的凝胶层以减少膜污染、提高膜通量，然后在其表面聚合聚吡咯以制备复合膜，进一步提高截留率.重点研究了膜的微观结构、亲水性、荷电性以及染料/盐分离特性及运行稳定性.结果表明,该膜对5种典型染料均具有较高的截留率（>99%）且对纯水保持较高的通量[91.7 L/(m2· h）]，膜还具有良好的染料/盐分离性能（染料截留率>99%，盐截留率<6%）.

In dyeing and printing wastewater treatment, how to efficiently separate dye/salt wastewater is an urgent problem. This project is to achieve efficient dye/salt selective separation and improve the membrane flux.Using polyvinylidene fluoride (PVDF) as the base membrane, carboxymethylcellulose (CMC) gel assisted by tannic acid was used to construct a stable gel layer through layer-by-layer cross-linking in order to reduce membrane contamination and improve the membrane flux, and then polymerised with polypyrrole on the surface of it in order to prepare a composite membrane to further improve the rejection rate.The microstructure, hydrophilicity, electrophilicity, dye/salt separation and operational stability of the membrane were investigated. The results showed that the membrane has high rejection of five typical dyes (>99%) and high flux to pure water [91.7 L/(m2·h)], and also has good dye/salt separation performance (dye rejection >99%, salt rejection <6%).

基金项目：

国家自然科学基金项目（22078244）; 全国大学生创新创业训练项目（202310058013）

作者简介：

唐峰玲（2000-），女，海南儋州人，硕士生，主要从事分离膜的研究.*通讯作者，E-mail：phdlinligang@163.com

参考文献：

[1]Li Q, Liao Z, Fang X, et al. Tannic acid assisted interfacial polymerization based loose thin-film composite NF membrane for dye/salt separation[J]. Desalination, 2020, 479: 114343.
[2]Miao Q, Wang Y, Chen D, et al. Development of novel ionic covalent organic frameworks composite nanofiltration membranes for dye/salt separation[J]. J Hazard Mater, 2024, 465: 133049.
[3]Pei T, Deng M, Ma C, et al. Loose nanofiltration membranes based on interfacial glutaraldehyde-amine polymerization for fast and highly selective dye/salt separation [J]. Chem Eng J, 2022, 450: 138057.
[4]李霞, 岳献阳, 杨红英, 等. 荷正电纳滤膜的染料脱盐性能研究[J]. 膜科学与技术, 2020, 40(5): 62-69.
[5]Wang C, Zhou G, Wang X, et al. Composite hydrogel membrane with high mechanical strength for treatment of dye pollutant [J]. Sep Purif Technol, 2021, 275: 119154.
[6]Xiao Z, Li Q, Liu H, et al. Adhesion mechanism and application progress of hydrogels[J]. Eur Polym J, 2022, 173: 111277.
[7]Kass L E, Nguyen J. Nanocarrier-hydrogel composite delivery systems for precision drug release[J]. Wires Nanomed Nanobi, 2022, 14(2): e1756.
[8]Liu B, Gu X, Sun Q, et al. Injectable in situ induced robust hydrogel for photothermal therapy and bone fracture repair[J]. Adv Funct Mater, 2021, 31(19): 2010779.
[9]Wan X, Rong Z, Zhu K, et al. Chitosan-based dual network composite hydrogel for efficient adsorption of methylene blue dye[J]. Int J Biol Macromol, 2022, 222: 725-735.
[10]Zainal S H, Mohd N H, Suhaili N, et al. Preparation of cellulose-based hydrogel: A review[J]. J Mater Res Technol, 2021, 10: 935-952.
[11]Cai R, Tan X, Chen Y, et al. Self-supported hydrogel loose nanofiltration membrane for dye/salt separation[J]. Sep Purif Technol, 2023, 328: 124982.
[12]Li Z, Wang M, Li Y, et al. Effect of cellulose nanocrystals on bacterial cellulose hydrogel for oil-water separation[J]. Sep Purif Technol, 2023, 304: 122349.
[13]Miao Q, Wang Y, Chen D, et al. Development of novel ionic covalent organic frameworks composite nanofiltration membranes for dye/salt separation[J]. J Hazard Mater, 2024, 465: 133049.
[14]Ma B, Ding Y, Li W, et al. Ultrafiltration membrane fouling induced by humic acid with typical inorganic salts[J]. Chemosphere, 2018, 197: 793-802.
[15]Xu T, Song J, Xiu G. Study on the cross-flow ultrafiltration of mixtures of macromolecular organic and inorganic salts[J]. Water Sci Technol, 2022, 85(6): 1754-1764.
[16]Wang X, Qin W, Wang L, et al. Desalination of dye utilizing carboxylated TiO2/calcium alginate hydrogel nanofiltration membrane with high salt permeation[J]. Sep Purif Technol, 2020, 253: 117475.
[17]Wang X, Dong S, Qin W, et al. Fabrication of highly permeable CS/NaAlg loose nanofiltration membrane by ionic crosslinking assisted layer-by-layer self-assembly for dye desalination[J]. Sep Purif Technol, 2022, 284: 120202.
[18]Zhang L, Xu L, Yu H, et al. Capsaicin mimic-polyethyleneimine crosslinked antifouling loose nanofiltration membrane for effective dye/salt wastewater treatment [J]. J Membr Sci, 2022, 641: 119923.
[19]Xu M, Feng X, Liu Z, et al. MOF laminates functionalized polyamide self-cleaning membrane for advanced loose nanofiltration[J]. Sep Purif Technol, 2021, 275: 119150.
[20]Li Q, Liao Z, Fang X, et al. Tannic acid-polyethyleneimine crosslinked loose nanofiltration membrane for dye/salt mixture separation [J]. J Membr Sci, 2019, 584: 324-332.

服务与反馈：

【文章下载】【加入收藏】

《膜科学与技术》编辑部地址：北京市朝阳区北三环东路19号蓝星大厦邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com