膜科学与技术

位置：首页 >> 期刊内容阅读

基于单宁酸的中空纤维纳滤膜抗污染改性

作者：张慧莹，吕晓龙，任凯，谷杰，王晨宇，李文远，鲁艺文

单位： 1，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，生物化工研究所，天津 300387；2，膜材料与膜应用国家重点实验室，天津膜天膜科技股份有限公司，天津300457

关键词：中空纤维；表面接枝；单宁酸；腐殖酸；抗污染

DOI号：

分类号： TQ051.893

出版年,卷(期):页码： 2024,44(4):58-64

摘要：

针对纳滤膜污染问题，本文选用富含酚羟基的单宁酸对聚酰胺纳滤膜表面进行接枝改性，构建富含酚羟基的抗污染层。探究单宁酸浓度对接枝效果的影响，利用傅立叶变换红外光谱仪、zeta电位以及水接触角测定仪对改性膜进行表征。结果表明，当单宁酸浓度为0.15 wt%时，通量衰减率最低，为5.05%，且稳态膜通量最高，为97.8 L/(m2.h.MPa)；在简单的去离子水清洗后通量恢复率达到98.1%；相比于常规纳滤原膜通量衰减率降低了84.6%，稳态通量提升了48.9%，通量恢复率提升了11.8%，展现出优良的抗污染性能。

Aiming at the problem of nanofiltration membrane fouling, tannic acid rich in phenolic hydroxyl groups was used to graft modify the surface of polyamide nanofiltration membrane to construct an anti-fouling layer rich in phenolic hydroxyl groups. The effect of tannic acid concentration on the grafting effect were investigated. The modified membranes were characterized by Fourier transform infrared spectrometer, zeta potential and water contact angle tester. The results showed that when the concentration of tannic acid was 0.15 wt%, the flux decay rate was the lowest, which was 5.05%, and the steady-state membrane flux was the highest, which was 97.8 L/(m2·h·MPa). The flux recovery rate reached 98.1% after simple deionized water cleaning. Compared with the conventional nanofiltration membrane, the flux decay rate was reduced by 84.6 %, the steady-state flux was increased by 48.9%, and the flux recovery rate was increased by 11.8%, showing excellent anti-pollution performance.

基金项目：

国家重点研发计划（2023YFB3810500）。

作者简介：

张慧莹（1999-），女，山东菏泽人，硕士生，抗污染纳滤膜的研制，E-mail：2286917830@qq.com

参考文献：

[1] 武福平, 李锡锋, 骆青虎,等. 天然有机物对国产纳滤膜的污染及清洗效果研究[J]. 水处理技术, 2020, 46(4): 26-30+40.
[2] 许斐, 王建军, 李桂芳,等. 纳滤膜污染形成与控制研究进展[J]. 城镇供水, 2019, (06): 68-74.
[3] Sun H, Chen Y, Liu J, et al. A novel chlorine-resistant polyacrylate nanofiltration membrane constructed from oligomeric phenolic resin[J]. Sep Purif Technol, 2021, 262: 118300.
[4] Raaijmakers M J T, Benes N.E. Current trends in interfacial polymerization chemistry[J]. Prog Polym Sci, 2016, 63: 86-142.
[5] Zhu X, Liang H, Tang X, et al. Supramolecular-based regenerable coating layer of thin-film composite nanofiltration membrane for simultaneously enhanced desalination and antifouling properties[J]. ACS Appl Mater Interfaces, 2019, 11(23): 21137-21149.
[6] Zhang W, Ji G L, Wang J, et al. In-situ formation of epoxy derived polyethylene glycol crosslinking network on polyamide nanofiltration membrane with enhanced antifouling performance[J]. J Membr Sci, 2022, 658: 120713.
[7] Wang, D, Lin J, Huang J, et al. A chitosan/dopamine-TiO2 composite nanofiltration membrane for antifouling in water purification[J]. Cellulose, 2021, 28(8): 4959-4973.
[8] Zhang, X, He F, Yang Z, et al. Engineering polyamide nanofiltration membrane with bifunctional terpolymer brushes for antifouling and antimicrobial properties[J]. Desalination, 2023, 558: 116642.
[9] Yan F, Chen H, Lü Yang, et al. Improving the water permeability and antifouling property of thin-film composite polyamide nanofiltration membrane by modifying the active layer with triethanolamine[J]. J Membr Sci, 2016, 513: 108-116.
[10] 李海柯. HKUST-1掺杂超滤基膜及单宁酸/Fe~(3+)中间层有机溶剂纳滤膜的制备及性能[D]. 江西: 江西理工大学, 2023.
[11] 李冬冬, 蔡超, 杨萌,等. 基于单宁酸的功能材料研究进展[J]. 高分子通报, 2017, (9): 10-20.
[12] 朱学武. 基于界面特性制备高性能纳滤膜及其性能研究[D]. 哈尔滨: 哈尔滨工业大学, 2020.
[13] 王新乐, 刘铭辉, 于海军,等. 两性离子纳滤膜的制备及抗污染性能研究[J]. 膜科学与技术, 2021, 41（6）: 51-59.
[14] 李春, 贾萌萌, 张梦蕾,等. 基于羟丙基-β-环糊精的界面聚合纳滤膜及其性能研究[J]. 膜科学与技术, 2021, 41（06）: 118-125.
[15] Yan F, Chen H, Lü Yang, et al. Improving the water permeability and antifouling property of thin-film composite polyamide nanofiltration membrane by modifying the active layer with triethanolamine[J]. J Membr Sci, 2016, 513: 108-116.
[16] 吕振华. 具非对称分离层的纳滤复合膜构建及染料分离特性研究[D]. 浙江: 浙江理工大学, 2020.

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