阴离子交换膜表面改性方法的研究现状
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摘要
离子交换膜已广泛应用于钨工业、氯碱工业、湿法冶金、医药、工业废水处理等领域.但是在实际应用中,离子交换膜由于本身特性仍存在许多不足,影响了工艺的大规模推广.例如,阴离子交换膜的正电性容易被天然水体中存在的胶体污染,从而降低了其处理效率.为克服阴离子交换膜存在的问题,总结了近几年国内外关于其表面改性的研究,详细介绍了几种常用的表面改性方法(吸附表面改性、电沉积表面改性、化学结合表面改性和等离子体表面改性)的原理、特点及其改性效果.研究表明,通过表面改性可以有效提高阴离子交换膜的抗污染能力、单价选择性和传输性能等,因此膜表面改性是提高膜性能的一个重要途径.
Ion-exchange membranes have been widely used in the industrial fields of tungsten industry, chlorine-alkali industry, hydro-metallurgy, pharmaceutical industry, industrial wastewater treatment, etc. However, there are still many deficiencies in the application of ion-exchange membrane, which affect the large-scale application of the process. For example, anion exchange membrane is easy to be contaminated by colloid in natural water due to its positive electricity, thus reducing its treatment efficiency. In order to overcome the problems existing in anion exchange membrane, this paper summarizes the research on surface modification at home and abroad in recent years, and introduces in detail the principle features and modification effects of several common surface modification methods(adsorption surface modification, electro-deposition surface modification, chemical combination surface modification and plasma surface modification). Studies have shown that the anti-pollution ability, monovalent selectivity and transmission performance of the anion exchange membranes can be effectively improved by surface modification, so the membrane surface modification is an important way to improve the performance of membranes.
Ion-exchange membranes have been widely used in the industrial fields of tungsten industry, chlorine-alkali industry, hydro-metallurgy, pharmaceutical industry, industrial wastewater treatment, etc. However, there are still many deficiencies in the application of ion-exchange membrane, which affect the large-scale application of the process. For example, anion exchange membrane is easy to be contaminated by colloid in natural water due to its positive electricity, thus reducing its treatment efficiency. In order to overcome the problems existing in anion exchange membrane, this paper summarizes the research on surface modification at home and abroad in recent years, and introduces in detail the principle features and modification effects of several common surface modification methods(adsorption surface modification, electro-deposition surface modification, chemical combination surface modification and plasma surface modification). Studies have shown that the anti-pollution ability, monovalent selectivity and transmission performance of the anion exchange membranes can be effectively improved by surface modification, so the membrane surface modification is an important way to improve the performance of membranes.
引文
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[15] Li J,Yuan S,Wang J,et al.Mussel-inspired modification of ion exchange membrane for monovalent separation[J].J Membr Sci,2018,553(9):139-150.
[16] Ruan H,Zheng Z,Pan J,et al.Mussel-inspired sulfonated polydopamine coating on anion exchange membrane for improving permselectivity and anti-fouling property[J].J Membr Sci,2018,550(6):427-435.
[17] Zhao Z,Cao H,Shi S,et al.Characterization of anion exchange membrane modified by electrodeposition of polyelectrolyte containing different functional groups[J].Desalination,2016,386(7):58-66.
[18] Zhao Y,Tang K,Liu H,et al.An anion exchange membrane modified by alternate electro-deposition layers with enhanced monovalent selectivity[J].J Membr Sci,2016,520(24):262-271.
[19] Zhao Y,Tang K,Ruan H,et al.Sulfonated reduced graphene oxide modification layers to improve monovalent anions selectivity and controllable resistance of anion exchange membrane[J].J Membr Sci,2017,536(16):167-175.
[20] Li Y,Shi S,Cao H,et al.Modification and properties characterization of heterogeneous anion-exchange membranes by electrodeposition of graphene oxide (GO)[J].Appl Surf Sci,2018,442(16):700-710.
[21] Albrecht W,Seifert B,Weigel T,et al.Amination of poly(ether imide) membranes using di- and multivalent amines[J].Macromol Chem Phys,2003,204(3):510-521.
[22] Wang X,Wang M,Jia Y,et al.Surface modification of anion exchange membrane by covalent grafting for imparting permselectivity between specific anions[J].Electrochim Acta,2015,174(24):1113-1121.
[23] Elangovan M,Dharmalingam S.Anti-biofouling anion exchange membrane using surface modified quaternized poly(ether imide) for microbial fuel cells[J].J Appl Polym Sci,2017,134(5):44431-44432.
[24] 李敏,李惠东,李惠琪,等.等离子体表面改性技术的发展[J].金属热处理,2004,29(7):5-9.
[25] Kir E,Alkan E.Fluoride removal by Donnan dialysis with plasma-modified and unmodified anion-exchange membranes[J].Desalination,2006,197(1/3):217-224.
[26] Tugba S A,Kir E,Ali G,et al.Removal of Cr(Ⅲ) and Cr(Ⅵ) through the plasma modified and unmodified ion-exchange membranes[J].Sep Purif Technol,2010,74(1):14-20.
[2] Ariono D,Khoiruddin,Subagjo,et al.Heterogeneous structure and its effect on properties and electrochemical behavior of ion-exchange membrane[J].Mater Res Express,2017,4(2):1-12.
[3] Nagarale R K,Gohil G S,Shahi V K.Recent developments on ion-exchange membranes and electro-membrane processes[J].Adv Colloid Interf Sci,2006,119(2/3):97-130.
[4] Vaselbehagh M,Karkhanechi H,Takagi R,et al.Surface modification of an anion exchange membrane to improve the selectivity for monovalent anions in electrodialysis - Experimental verification of theoretical predictions[J].J Membr Sci,2015,490(18):301-310.
[5] Elumalai V,Sangeetha D.Preparation of anion exchangeable titanate nanotubes and their effect on anion exchange membrane fuel cell[J].Mater Des,2018,154(18):63-72.
[6] Zhang Y,Liu R,Lang Q,et al.Composite anion exchange membrane made by layer-by-layer method for selective ion separation and water migration control[J].Sep Purif Technol,2018,192(3):278-286.
[7] Amara M,Kerdjoudj H.Modified membranes applied to metallic ion separation and mineral acid concentration by electrodialysis[J].Sep Purif Technol,2002,29(1):79-87.
[8] Weinertová K,Krivcík J,Neděla D,et al.Optimization of polyethylene binder for heterogeneous ion exchange membrane manufacture to improve its mechanical stability[J].J Appl Polym Sci,2018,135(26):1-10.
[9] Zhang W,Ma J,Wang P,et al.Investigations on the interfacial capacitance and the diffusion boundary layer thickness of ion exchange membrane using electrochemical impedance spectroscopy[J].J Membr Sci,2016,502(6):37-47.
[10] Nebavskaya K A,Sarapulova V V,Sabbatovskiy K G,et al.Impact of ion exchange membrane surface charge and hydrophobicity on electroconvection at underlimiting and overlimiting currents[J].J Membr Sci,2017,523(3):36-44.
[11] Sata T.Studies on anion exchange membranes having permselectivity for specific anions in electrodialysis - Effect of hydrophilicity of anion exchange membranes on permselectivity of anions[J].J Membr Sci,2000,167(1):1-31.
[12] 魏慧,吴学昊,管佳,等.离子交换膜改性的研究现状及发展趋势[J].无机盐工业,2016,48(6):1-4.
[13] Sata T,Yamaguchi T,Matsusaki K.Interaction between anionic polyelectrolytes and anion exchange membranes and change in membrane properties[J].J Membr Sci,1995,100(3):229-238.
[14] Wang M,Wang X,Jia Y,et al.An attempt for improving electrodialytic transport properties of a heterogeneous anion exchange membrane[J].Desalination,2014,351(20):163-170.
[15] Li J,Yuan S,Wang J,et al.Mussel-inspired modification of ion exchange membrane for monovalent separation[J].J Membr Sci,2018,553(9):139-150.
[16] Ruan H,Zheng Z,Pan J,et al.Mussel-inspired sulfonated polydopamine coating on anion exchange membrane for improving permselectivity and anti-fouling property[J].J Membr Sci,2018,550(6):427-435.
[17] Zhao Z,Cao H,Shi S,et al.Characterization of anion exchange membrane modified by electrodeposition of polyelectrolyte containing different functional groups[J].Desalination,2016,386(7):58-66.
[18] Zhao Y,Tang K,Liu H,et al.An anion exchange membrane modified by alternate electro-deposition layers with enhanced monovalent selectivity[J].J Membr Sci,2016,520(24):262-271.
[19] Zhao Y,Tang K,Ruan H,et al.Sulfonated reduced graphene oxide modification layers to improve monovalent anions selectivity and controllable resistance of anion exchange membrane[J].J Membr Sci,2017,536(16):167-175.
[20] Li Y,Shi S,Cao H,et al.Modification and properties characterization of heterogeneous anion-exchange membranes by electrodeposition of graphene oxide (GO)[J].Appl Surf Sci,2018,442(16):700-710.
[21] Albrecht W,Seifert B,Weigel T,et al.Amination of poly(ether imide) membranes using di- and multivalent amines[J].Macromol Chem Phys,2003,204(3):510-521.
[22] Wang X,Wang M,Jia Y,et al.Surface modification of anion exchange membrane by covalent grafting for imparting permselectivity between specific anions[J].Electrochim Acta,2015,174(24):1113-1121.
[23] Elangovan M,Dharmalingam S.Anti-biofouling anion exchange membrane using surface modified quaternized poly(ether imide) for microbial fuel cells[J].J Appl Polym Sci,2017,134(5):44431-44432.
[24] 李敏,李惠东,李惠琪,等.等离子体表面改性技术的发展[J].金属热处理,2004,29(7):5-9.
[25] Kir E,Alkan E.Fluoride removal by Donnan dialysis with plasma-modified and unmodified anion-exchange membranes[J].Desalination,2006,197(1/3):217-224.
[26] Tugba S A,Kir E,Ali G,et al.Removal of Cr(Ⅲ) and Cr(Ⅵ) through the plasma modified and unmodified ion-exchange membranes[J].Sep Purif Technol,2010,74(1):14-20.
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