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Preparation of polyethersulfone / sulfonated polysulfone / sulfonated polyethersulfone loose nanofiltration membrane for selective separation of dyes and salts

Authors： Liu Xiaowei1,2, HU Mengyang1,2, Tao Ran1,2, CUI Zhenyu1,2, Ma Xiaohua1,2, LI Jianxin1,2*

Units： State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China

KeyWords： Polyethersulfone; Sulfonated Polysulfone; Sulfonated Polyethersulfone; Loose Nanofiltration Membrane; Dye/Salt Separation

ClassificationCode：TQ028

year,volume(issue):pagination： 2021,41(4):65-72

Abstract：

The effective separation of saline dye wastewater has always been an urgent issue in the field of industrial wastewater treatment. PES, SPES (sulfonation degree-DS=25%) and SPSf (DS=25%) as raw materials (31 wt.% polymeric concentration), N,N-dimethylacetamide as solvent, adipic acid as a small molecular pore-forming and water as coagulanting bath (at) were employed to fabricate PES/SPES/SPSf loose nanofiltration (LNF) membrane. The effect of SPES concentration in casting solution on the morphology and performance was investigated. Results showed that the PES/SPSf/SPES blend system is a completely compatible system. The resulting PES/SPSf/SPES LNF membranes displayed a typical asymmetric structure with a dense skin layer and a sponge like sub layer. Specifiaclly, when SPES centration was 10 wt.% of polymers (PES/SPSf/SPES) (mass ratio of PES and SPES to SPSf =86/14) in the casting solution, the LNF membrane (M10) with the molecular weight cut off of 5900 Da and pore size of 1.38 nm was obtained. The pure water permeability of the resultant LNF membrane (M10) was 60.5 L m-2 h-1 bar-1(0.2 MPa). In addition, the rejection rate of LNF membrane (M10) was >99% for Disperse Red 74 and Blue 79. In a salt/dye mixed system, the rejection of M10 was over 99% for Disperse Red 74 and Blue 79 and lower than 25% for Na2SO4.It also exhibited an excellent selective separation performance and operation stability.

Funds：

国家自然科学基金项目（21878230）；国家重点研发计划项目（2020YFA0211000 & 2020YFA0211003）。

AuthorIntro：

刘晓伟（1995-），男，河北张家口人，硕士生，从事聚合物分离膜及染料废水处理研究

Reference：

[1] 黄万抚, 严思明, 丁声强. 膜分离技术在印染废水中的应用及发展趋势[J]. 有色金属科学与工程, 2012, 3(02): 41-45.
[2] 谢艳新, 刘海娟, 尚磊, et al. 染料废水处理最新研究进展[J]. 印染助剂, 2020, 37(07): 11-16.
[3] 潘成杰. 染料废水预处理研究和工程应用[D]. 中国矿业大学, 2020.
[4] 程金苹, 李佳钰, 李平. 染料废水处理技术研究[J]. 环境与发展, 2020, 32(03): 100-101+103.
[5] PAVITHRA K G, P S K, V J, et al. Removal of colorants from wastewater: A review on sources and treatment strategies[J]. Journal of Industrial and Engineering Chemistry, 2019, 75: 1-19.
[6] KATHERESAN V, KANSEDO J, LAU S Y. Efficiency of various recent wastewater dye removal methods: A review[J]. Journal of Environmental Chemical Engineering, 2018, 6(4): 4676-4697.
[7] LIU C, MAO H, ZHENG J, et al. Tight ultrafiltration membrane: Preparation and characterization of thermally resistant carboxylated cardo poly (arylene ether ketone)s (PAEK-COOH) tight ultrafiltration membrane for dye removal[J]. Journal of Membrane Science, 2017, 530: 1-10.
[8] ZHANG Q, WANG H, ZHANG S, et al. Positively charged nanofiltration membrane based on cardo poly(arylene ether sulfone) with pendant tertiary amine groups[J]. Journal of Membrane Science, 2011, 375(1-2): 191-197.
[9] DING J, WU H, WU P. Preparation of highly permeable loose nanofiltration membranes using sulfonated polyethylenimine for effective dye/salt fractionation[J]. Chemical Engineering Journal, 2020, 396: 125199.
[10] LI S, CUI Z, ZHANG L, et al. The effect of sulfonated polysulfone on the compatibility and structure of polyethersulfone-based blend membranes[J]. Journal of Membrane Science, 2016, 513: 1-11.
[11] 杨淑倩, 刘晓伟, 胡梦洋, et al. 己二酸调控聚醚砜/磺化聚砜致密超滤膜结构及染料/盐选择分离性能[J]. 膜科学与技术, 2020, 40(03): 28-36.
[12] GUAN R, DAI H, LI C, et al. Effect of casting solvent on the morphology and performance of sulfonated polyethersulfone membranes[J]. Journal of Membrane Science, 2005, 277(1): 148-156.
[13] 王利媛, 康卫民, 庄旭品, et al. 磺化聚醚砜纳米纤维复合质子交换膜的制备及其性能[J]. 纺织学报, 2020, 41(11): 19-26.
[14] 余亚伟. 新型磺化聚醚砜纳滤膜的制备与性能研究[D]. 浙江工业大学, 2017.
[15] FANG L-F, YANG H-Y, CHENG L, et al. Effect of Molecular Weight of Sulfonated Poly(ether sulfone) (SPES) on the Mechanical Strength and Antifouling Properties of Poly(ether sulfone)/SPES Blend Membranes[J]. Industrial & Engineering Chemistry Research, 2017, 56(39): 11302-11311.
[16] 杨龙, 黄方, 乐以伦. 用基团贡献法估算聚砜、聚醚砜及其磺化产物的溶度参数[J]. 功能高分子学报, 2001, (02): 214-220.
[17] GUAN R, DAI H, LI C, et al. Effect of casting solvent on the morphology and performance of sulfonated polyethersulfone membranes[J]. Journal of Membrane Science, 2006, 277(1-2): 148-156.
[18] A.J. R, J.W.A. V D B, C.A. S. Formation of membranes by means of immersion precipitation : Part I. A model to describe mass transfer during immersion precipitation[J]. Reuvers AJ;van den Berg JWA;Smolders CA, 1987, 34(1): 67-86.

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