聚电解质静电沉积改性制备高性能反渗透膜

doi:10.11949/j.issn.0438-1157.20171021

化工学报 ›› 2018, Vol. 69 ›› Issue (2): 830-839.DOI: 10.11949/j.issn.0438-1157.20171021

• 材料化学工程与纳米技术 • 上一篇下一篇

聚电解质静电沉积改性制备高性能反渗透膜

刘美玲^1,2,3, 刘军^1,2,3, 王琴^1,2,3, 谈勇⁴, 李保安^1,2,3

1 化学工程联合国家重点实验室, 天津大学化工学院, 天津 300072;
2 天津化学化工协同创新中心, 天津 300072;
3 天津市膜科学与海水淡化技术重点实验室, 天津 300072;
4 广州市水务局, 广东广州 510640

收稿日期:2017-07-31 修回日期:2017-10-18 出版日期:2018-02-05 发布日期:2018-02-05
通讯作者: 李保安
基金资助:
高性能海水淡化膜技术创新服务平台项目（CXSF2014-34-C）；水利部技术推广项目（SF-201605）。

Surface modification of reverse osmosis membrane by electrostatic deposition of polyelectrolyte for performance improvement

LIU Meiling^1,2,3, LIU Jun^1,2,3, WANG Qin^1,2,3, TAN Yong⁴, LI Bao'an^1,2,3

1 State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2 Collaborative Innovation Center of Chemistry and Chemical Engineering(Tianjin), Tianjin 300072, China;
3 Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, China;
4 Guangzhou Water Authority, Guangzhou 510640, Guangdong, China

Received:2017-07-31 Revised:2017-10-18 Online:2018-02-05 Published:2018-02-05
Supported by:
supported by the Innovation Service Platform Project of Desalination and Comprehensive Utilization (CXSF2014-34-C) and the Technical Demonstration Project of Ministry of Water Resources (SF-201605).

摘要/Abstract

摘要：

利用次氯酸钠溶液对商品反渗透膜表面进行氯化处理，然后将聚阳离子电解质壳聚糖通过静电吸附作用沉积在RO膜的表面，系统地研究了氯化过程的pH、氯化时间、次氯酸钠浓度、壳聚糖浓度及其沉积时间对膜性能的影响，以制备出高通量、高截留率的RO膜。在压力1.55 MPa、原料液温度（298±1）K的条件下，测定RO膜处理2000 μg·g^-1氯化钠溶液的水通量和截留率。结果表明，当pH=9、氯化时间为30 min、次氯酸钠浓度为1000 mg·L^-1时，水通量较原膜提高了约19.89%，截留率略有提高；当壳聚糖浓度为0.1%（质量分数）、沉积时间为30 min时，改性膜的接触角降低到34.88°，亲水性提高，水通量较氯化后的RO膜几乎保持不变，为60.55 L·m^-2·h^-1，截留率达到了99.56%。经过氯化和沉积改性后的RO膜水通量和截留率均得到了提高。

关键词: 膜, 脱盐, 渗透, 氯化, 聚电解质, 壳聚糖, 静电沉积

Abstract:

The commercial reverse osmosis (RO) membrane surface was chlorinated with the sodium hypochlorite solution. Then the chitosan as a polycation electrolyte was deposited on the chlorinated RO membrane surface with the help of electrostatic adsorption. With the aim of preparing high flux and high salt rejection RO membrane, the effects of solution pH, chlorination time, sodium hypochlorite concentration, chitosan concentration and deposition time on membrane performance were systematically studied. The water flux and the salt rejection were measured at 1.55 MPa and (298±1) K for a feed NaCl concentration of 2000 μg·g^-1. The results showed that, compared to the original RO membrane, the water flux of the chlorinated membrane increased by 19.89% when the chlorination solution pH=9, the chlorination time was 30 min and the chlorination concentration was 1000 mg·L^-1. A slightly increase of the salt rejection was also observed. Further modification of chitosan deposition on the chlorinated membrane surface showed that the membrane surface hydrophilicity was enhanced. When the chitosan concentration was 0.1%(mass) and the deposition time was 30 min, the water contact angle of the membrane surface was 34.88° and the salt rejection improved to 99.56%. The water flux of the deposition modified membrane reached 60.55 L·m^-2·h^-1, which was nearly maintained the same as the chlorinated RO membrane above. These results indicated that both the water flux and the salt rejection of the modified commercial RO membrane improved after the surface modification through chlorination and chitosan deposition.

Key words: membrane, desalination, permeation, chlorination, polyelectrolyte, chitosan, electrostatic deposition

中图分类号:

TQ028.8

刘美玲, 刘军, 王琴, 谈勇, 李保安. 聚电解质静电沉积改性制备高性能反渗透膜[J]. 化工学报, 2018, 69(2): 830-839.

LIU Meiling, LIU Jun, WANG Qin, TAN Yong, LI Bao'an. Surface modification of reverse osmosis membrane by electrostatic deposition of polyelectrolyte for performance improvement[J]. CIESC Journal, 2018, 69(2): 830-839.

参考文献

[1] 张雨山, 魏杨杨, 曹震, 等. 反渗透膜的研究进展与展望[J]. 化学工业与工程, 2015, 32(5):8-19. ZHANG Y S, WEI Y Y, CAO Z, et al. Progress and prospect in the development of reverse osmosis membrane technology[J]. Chemical Industry and Engineering, 2015, 32(5):8-19.
[2] KIM S J, KO S H, KANG K H, et al. Direct seawater desalination by ion concentration polarization[J]. Nature Nanotechnology, 2010, 5(4):297-301.
[3] 刘天柱, 赵东风, 薛建良, 等. 低温多效蒸发系统进料方式的研究进展[J]. 化学与生物工程, 2014, 31(7):5-8. LIU T Z, ZHAO D F, XUE J L, et al. Research progress of feed mode in low-temperature multiple effect distillation system[J]. Chemistry and Bioengineering, 2014, 31(7):5-8.
[4] DARWISH M A, EI-DESSOUKY H. The heat recovery thermal vapour-compression desalting system:a comparison with other thermal desalination processes[J]. Applied Thermal Engineering, 1996, 16(6), 523-537.
[5] LEE K P, ARNOT T C, MATTIA D. A review of reverse osmosis membrane materials for desalination-development to date and future potential[J]. Journal of Membrane Science, 2011, 370(1/2):1-22.
[6] LI D, WANG H T. Recent developments in reverse osmosis desalination membranes[J]. Journal of Materials Chemistry, 2010, 20(22):4551-4566.
[7] SCHIFFLER M. Perspectives and challenges for desalination in the 21st century[J]. Desalination, 2004, 165:1-9.
[8] 张晨. 高通量反渗透复合膜制备研究[D]. 天津:天津大学, 2009. ZHANG C. Study on the preparation of composite reverse osmosis membrane for high flux[D]. Tianjin:Tianjin University, 2009.
[9] WU J H, WANG Z, YAN W T, et al. Improving the hydrophilicity and fouling resistance of RO membranes by surface immobilization of PVP based on a metal-polyphenol precursor layer[J]. Journal of Membrane Science, 2015, 496:58-69.
[10] ZOU L, VIDALIS I, STEELE D, et al. Surface hydrophilic modification of RO membranes by plasma polymerization for low organic fouling[J]. Journal of Membrane Science, 2011, 369(1/2):420-428.
[11] WAGNER E M V, SAGLE A C, SHARMA M M, et al. Surface modification of commercial polyamide desalination membranes using poly(ethylene glycol) diglycidyl ether to enhance membrane fouling resistance[J]. Journal of Membrane Science, 2011, 367(1/2):273-287.
[12] LIU H Y, BANDYOPADHYAY P, KSHETRI T, et al. Layer-by-layer assembled polyelectrolyte-decorated graphene multilayer film for hydrogen gas barrier application[J]. Composite Part B:Engineering, 2017, 114:339-347.
[13] AVRAM A M, AHMADIANNAMINI P, VU A, et al. Polyelectrolyte multilayer modified nanofiltration membranes for the recovery of ionic liquid from dilute aqueous solutions[J]. Journal of Applied Polymer Science, 2017, 134(39):45349.
[14] CHEN D D, WU M D, LI B C, et al. Layer-by-layer-assembled healable antifouling films[J]. Advanced Materials, 2015, 27(39):5882-5888.
[15] JIN W Q, TOUTIANOUSH A, TIEKE B. Use of polyelectrolyte layer-by-layer assemblies as nanofiltration and reverse osmosis membranes[J]. Langmuir, 2003, 19(7):2550-2553.
[16] TOUTIANOUSH A, JIN W Q, DELIGÖZ H, et al. Polyelectrolyte multilayer membranes for desalination of aqueous salt solutions and seawater under reverse osmosis conditions[J]. Applied Surface Science, 2005, 246(4):437-443.
[17] ISHIGAMI T, AMANO K, FUJⅡ A, et al. Fouling reduction of reverse osmosis membrane by surface modification via layer-by-layer assembly[J]. Separation and Purification Technology, 2012, 99(41):1-7.
[18] KOUKETSU T, DUAN S, KAI T, et al. PAMAM dendrimer composite membrane for CO₂ separation:formation of a chitosan gutter layer[J]. Journal of Membrane Science, 2007, 287(1):51-59.
[19] RAVAL H D, RANA P S, MAITI S. A novel high-flux, thin-film composite reverse osmosis membrane modified by chitosan for advanced water treatment[J]. RSC Advances, 2015, 5(9):6687-6694.
[20] ZHOU Y, YU S C, GAO C J, et al. Surface modification of thin film composite polyamide membranes by electrostatic self deposition of polycations for improved fouling resistance[J]. Separation and Purification Technology, 2009, 66(2):287-294.
[21] ANTONY A, FUDIANTO R, COX S, et al. Assessing the oxidative degradation of polyamide reverse osmosis membrane-accelerated ageing with hypochlorite exposure[J]. Journal of Membrane Science, 2010, 347(1):159-164.
[22] JONS S D, STUTTS K J, FERRITTO M S, et al. Treatment of composite polyamide membrane to improve performance:US5876602[P]. 1999-03-02.
[23] XU J, FENG X S, GAO C J. Surface modification of thin-film-composite polyamide membranes for improved reverse osmosis performance[J]. Journal of Membrane Science, 2011, 370(1/2):116-123.
[24] KANG G D, GAO C J, CHEN W D, et al. Study on hypochlorite degradation of aromatic polyamide reverse osmosis membrane[J]. Journal of Membrane Science, 2007, 300(1):165-171.
[25] GLATER J, HONG S K, ELIMELECH M. The search for a chlorine-resistant reverse osmosis membrane[J]. Desalination, 1994, 95(3):325-345.
[26] KWON J N, LECKIE J O. Hypochlorite degradation of crosslinked polyamide membranes(Ⅰ):Changes in chemical/morphological properties[J]. Journal of Membrane Science, 2006, 283(1/2):21-26.
[27] 魏新渝. 高耐氯性复合反渗透膜的制备研究[D]. 天津:天津大学, 2010. WEI X Y. Preparation of composite RO membrane with high chlorine resistance[D]. Tianjin:Tianjin University, 2010.
[28] LIU M H, CHEN Q, WANG L Z, et al. Improving fouling resistance and chlorine stability of aromatic polyamide thin-film composite RO membrane by surface grafting of polyvinyl alcohol (PVA)[J]. Desalination, 2015, 367:11-20.
[29] WEI X Y, WANG Z, XU J, et al. Surface modification of commercial aromatic polyamide reverse osmosis membranes by crosslinking treatments[J]. Chinese Journal of Chemical Engineering, 2013, 21(5):473-484.
[30] ZHAI X F, MENG J Q, LI R, et al. Hypochlorite treatment on thin film composite RO membrane to improve boron removal performance[J]. Desalination, 2011, 274(1):136-143.
[31] RAVAL H D, TRIVEDI J J, JOSHI S V, et al. Flux enhancement of thin film composite RO membrane by controlled chlorine treatment[J]. Desalination, 2010, 250(3):945-949.
[32] 孙昌盛. 芳香聚酰胺反渗透复合膜表面接枝壳聚糖(CS)及其性能研究[D]. 杭州:浙江理工大学, 2015. SUN C S. Study on the surface grafting of the aromatic polyamide thin-film composite reverse osmosis membrane with chitosan and the properties of the modified membrane[D]. Hangzhou:Zhejiang Sci-Tech University, 2015.
[33] 连冠楠. 废弃聚酰胺反渗透纳滤功能化及其脱盐浓缩过程研究[D]. 杭州:浙江工业大学, 2016. LIAN G N. Study on nanofiltration using abandoned polyamide reverse osmosis membrane and desalination and concentration[D]. Hangzhou:Zhejiang University of Technology, 2016.

聚电解质静电沉积改性制备高性能反渗透膜

Surface modification of reverse osmosis membrane by electrostatic deposition of polyelectrolyte for performance improvement

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	邵苛苛, 宋孟杰, 江正勇, 张旋, 张龙, 高润淼, 甄泽康. 水平方向上冰中受陷气泡形成和分布实验研究[J]. 化工学报, 2023, 74(S1): 161-164.
[2]	吴延鹏, 李晓宇, 钟乔洋. 静电纺丝纳米纤维双疏膜油性细颗粒物过滤性能实验分析[J]. 化工学报, 2023, 74(S1): 259-264.
[3]	李艺彤, 郭航, 陈浩, 叶芳. 催化剂非均匀分布的质子交换膜燃料电池操作条件研究[J]. 化工学报, 2023, 74(9): 3831-3840.
[4]	何松, 刘乔迈, 谢广烁, 王斯民, 肖娟. 高浓度水煤浆管道气膜减阻两相流模拟及代理辅助优化[J]. 化工学报, 2023, 74(9): 3766-3774.
[5]	胡建波, 刘洪超, 胡齐, 黄美英, 宋先雨, 赵双良. 有机笼跨细胞膜易位行为的分子动力学模拟研究[J]. 化工学报, 2023, 74(9): 3756-3765.
[6]	齐聪, 丁子, 余杰, 汤茂清, 梁林. 基于选择吸收纳米薄膜的太阳能温差发电特性研究[J]. 化工学报, 2023, 74(9): 3921-3930.
[7]	胡亚丽, 胡军勇, 马素霞, 孙禹坤, 谭学诣, 黄佳欣, 杨奉源. 逆电渗析热机新型工质开发及电化学特性研究[J]. 化工学报, 2023, 74(8): 3513-3521.
[8]	张佳怡, 何佳莉, 谢江鹏, 王健, 赵鹬, 张栋强. 渗透汽化技术用于锂电池生产中N-甲基吡咯烷酮回收的研究进展[J]. 化工学报, 2023, 74(8): 3203-3215.
[9]	张贲, 王松柏, 魏子亚, 郝婷婷, 马学虎, 温荣福. 超亲水多孔金属结构驱动的毛细液膜冷凝及传热强化[J]. 化工学报, 2023, 74(7): 2824-2835.
[10]	屈园浩, 邓文义, 谢晓丹, 苏亚欣. 活性炭/石墨辅助污泥电渗脱水研究[J]. 化工学报, 2023, 74(7): 3038-3050.
[11]	韩奎奎, 谭湘龙, 李金芝, 杨婷, 张春, 张永汾, 刘洪全, 于中伟, 顾学红. 四通道中空纤维MFI分子筛膜用于二甲苯异构体分离[J]. 化工学报, 2023, 74(6): 2468-2476.
[12]	蔡斌, 张效林, 罗倩, 党江涛, 左栗源, 刘欣梅. 导电薄膜材料的研究进展[J]. 化工学报, 2023, 74(6): 2308-2321.
[13]	陈朝光, 贾玉香, 汪锰. 以低浓度废酸驱动中和渗析脱盐的模拟与验证[J]. 化工学报, 2023, 74(6): 2486-2494.
[14]	刘道银, 陈柄岐, 张祖扬, 吴琰. 颗粒聚团结构对曳力特性影响的数值模拟[J]. 化工学报, 2023, 74(6): 2351-2362.
[15]	顾浩, 张福建, 刘珍, 周文轩, 张鹏, 张忠强. 力电耦合作用下多孔石墨烯膜时间维度的脱盐性能及机理研究[J]. 化工学报, 2023, 74(5): 2067-2074.