膜科学与技术

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Effects of current density and ion concentration on the separation of Na+ / Mg2+ by electrodialysis

Authors： CHEN Shuqi, XIANG Wenyu, DONG Ting, HAN Minyuan, HAN Le

Units： School of Environment and Ecology, Chongqing University, Key Laboratory of Ecological Environment in the Three Gorges Reservoir Area, Ministry of Education, Chongqing 400045，China

KeyWords： electrodialysis; permselectivity; current density; concentrations; selective membrane

ClassificationCode：TQ028 ;X703

year,volume(issue):pagination： 2022,42(2):56-63

Abstract：

The ion-exchange membrane based electrodialysis shows clear potential for counter-ions separation. Towards fluctuating water characteristics, best use of the governing operating parameters to efficiently and selectively separate monovalent / divalent ions require to be clarified. In this work, the effects of current density, total ion concentration and ion concentration ratio on the selective separation of monovalent / divalent cations in different membrane systems were discussed, and the key control factors and internal mechanism were analyzed. The results show that the selective membrane CSO exhibited preferred migration of Na+ than the standard membrane CMV, and EIS analysis further stated that the existence of additional functional layers on the surface of the selective membrane increased the resistance of the membrane interface including electric double layer and diffusion boundary layer by 3-40 times compared with the control, significantly strengthened its impedance effect on divalent ion migration. Increasing the operating current promoted the selective permeability of Na+ in any membrane system. The rapid transfer of monovalent cations in the diffusion boundary layer led to the reduction of divalent ion selective permeability by 5% - 76%. The effect of ion concentration on the counter-ions permselectivity was opposite in different membrane systems. Overall, this work is a potential reference and guidance towards achieving effectively counter-ions selectivity particularly in real applications of electrodialysis.

Funds：

重庆市留学人员回国创业创新支持计划“基于电渗析脱盐技术的页岩气开采废液资源化处置与循环利用”项目（CX2018004）。

AuthorIntro：

陈舒琦（2000-），女，浙江瑞安，本科，电渗析脱盐

Reference：

[1] Ahdab Y D, Rehman D, Lienhard J H. Brackish water desalination for greenhouses: Improving groundwater quality for irrigation using monovalent selective electrodialysis reversal[J]. Journal of Membrane Science, 2020, 610: 118072.
[2] Lambert J, Avila-Rodriguez M, Durand G, et al. Separation of sodium ions from trivalent chromium by electrodialysis using monovalent cation selective membranes[J]. Journal of Membrane Science, 2006, 280(1/2): 219-225.
[3] Vallois C. Separation of H+/Cu2+ cations by electrodialysis using modified proton conducting membranes[J]. Journal of Membrane Science, 2003, 216(1-2): 13-25.
[4] 曲炜. 城市污水处理回用发展历程与工艺适应性分析[J]. 水利发展研究, 2011, 11(7): 61-65.
[5] 严丹燕. 城市污水再生回用技术研究进展[J]. 中国资源综合利用, 2018, 36(1): 99-101.
[6] 池勇志, 崔维花, 苑宏英,等. 不同源水和回用途径的再生水处理工艺的选择[J]. 中国给水排水, 2012, 28(18): 22-26.
[7] Geise G M, Paul D R, Freeman B D. Fundamental water and salt transport properties of polymeric materials[J]. Progress in Polymer Science, 2014, 39(1): 1-42.
[8] Strathmann H. Ion-Exchange Membrane Separation Processes[M]. Elsevier Science, 2004.
[9] Luo T, Abdu S, Wessling M. Selectivity of ion exchange membranes: A review[J]. Journal of Membrane Science, 2018, 555: 429-454.
[10] Van Der Bruggen B, Koninckx A, Vandecasteele C. Separation of monovalent and divalent ions from aqueous solution by electrodialysis and nanofiltration[J]. Water Research, 2004, 38(5): 1347-1353.
[11] Han L, Galier S, Roux-De Balmann H. Ion hydration number and electro-osmosis during electrodialysis of mixed salt solution[J]. Desalination, 2015, 373: 38-46.
[12] Strathmann H. Electrodialysis, a mature technology with a multitude of new applications[J]. Desalination, 2010, 264(3): 268-288.
[13] Zhang H, Ding R, Zhang Y, et al. Stably coating loose and electronegative thin layer on anion exchange membrane for efficient and selective monovalent anion transfer[J]. Desalination, 2017, 410: 55-65.
[14] Zhu Y, Ahmad M, Yang L, et al. Adsorption of polyelectrolyte multilayers imparts high monovalent/divalent cation selectivity to aliphatic polyamide cation-exchange membranes[J]. Journal of Membrane Science, 2017, 537: 177-185.
[15] Strathmann H. Introduction to Membrane Science and Technology[M]. Wiley, 2011.
[16] 田中良修, 葛道才, 任庆春，著. 离子交换膜基本原理及应用? [M]. 北京：化学工业出版社, 2010.
[17] Elattara A, Elmidaouia A, Pismenskaiab N, et al. Comparison of transport properties of monovalent anions through anion-exchange membranes[J]. Journal of Membrane Science 1998, 143: 249-261.
[18] Mlyoshi H, Chubachi M, Yamagaml M, et al. Characteristic coefficients for equilibrium between solution and neosepta or selemion cation exchange membranes[J]. Journal of Chemical and Engineering Data, 1992, 37(1): 120-124.
[19] Cohen B, Lazarovitch N, Gilron J. Upgrading groundwater for irrigation using monovalent selective electrodialysis[J]. Desalination, 2018, 431: 126-139.
[20] Moreno J, Díez V, Saakes M, et al. Mitigation of the effects of multivalent ion transport in reverse electrodialysis[J]. Journal of Membrane Science, 2018, 550:155-162.
[21] Han L, Liu Y, Chew J W. Boron transfer during desalination by electrodialysis[J]. Journal of Membrane Science, 2018, 547: 64-72.
[22] Han L, Galier S, Balmann H R-D. A phenomenological model to evaluate the performances of electrodialysis for the desalination of saline water containing organic solutes[J]. Desalination, 2017, 422: 17-24.
[23] Cowan D A, Brown J H. Effect of turbulence on limiting current density in electrodialysis[J]. Industrial and Engineering Chemistry, 1959, 51: 1445-1448.
[24] 徐铜文, 黄川徽，著. 离子交换膜的制备与应用技术[M]. 北京：化学工业出版社, 2008.
[25] 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]. Journal of Membrane Science, 2000, 167: 1-31.
[26] Sata T, Sata T, Yang W. Studies on cation-exchange membranes having permselectivity between cations in electrodialysis[J]. Journal of Membrane Science, 2002, 206: 31–60.
[27] Nikonenko V V, Pismenskaya N D, Belova E I, et al. Intensive current transfer in membrane systems: Modelling, mechanisms and application in electrodialysis[J]. Advances in Colloid and Interface Science, 2010, 160(1-2): 101-123.
[28] Xu X, He Q, Ma G, et al. Selective separation of mono- and di-valent cations in electrodialysis during brackish water desalination: Bench and pilot-scale studies[J]. Desalination, 2018, 428: 146-160.
[29] Kim Y, Walker W S, Lawler D F. Competitive separation of di- vs. mono-valent cations in electrodialysis: Effects of the boundary layer properties[J]. Water Research, 2012, 46(7): 2042-2056.

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