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Tekinalp Ö, Zimmermann P, Holdcroft S, Burheim OS, Deng L. Cation Exchange Membranes and Process Optimizations in Electrodialysis for Selective Metal Separation: A Review. MEMBRANES 2023; 13:566. [PMID: 37367770 DOI: 10.3390/membranes13060566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/26/2023] [Accepted: 05/26/2023] [Indexed: 06/28/2023]
Abstract
The selective separation of metal species from various sources is highly desirable in applications such as hydrometallurgy, water treatment, and energy production but also challenging. Monovalent cation exchange membranes (CEMs) show a great potential to selectively separate one metal ion over others of the same or different valences from various effluents in electrodialysis. Selectivity among metal cations is influenced by both the inherent properties of membranes and the design and operating conditions of the electrodialysis process. The research progress and recent advances in membrane development and the implication of the electrodialysis systems on counter-ion selectivity are extensively reviewed in this work, focusing on both structure-property relationships of CEM materials and influences of process conditions and mass transport characteristics of target ions. Key membrane properties, such as charge density, water uptake, and polymer morphology, and strategies for enhancing ion selectivity are discussed. The implications of the boundary layer at the membrane surface are elucidated, where differences in the mass transport of ions at interfaces can be exploited to manipulate the transport ratio of competing counter-ions. Based on the progress, possible future R&D directions are also proposed.
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Affiliation(s)
- Önder Tekinalp
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Pauline Zimmermann
- Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Steven Holdcroft
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Odne Stokke Burheim
- Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Liyuan Deng
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
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Oral I, Ott F, Abetz V. Thermodynamic study of crown ether-lithium/magnesium complexes based on benz-1,4-dioxane and its homologues. Phys Chem Chem Phys 2022; 24:11687-11695. [PMID: 35506443 DOI: 10.1039/d2cp01076c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and characterization of benz-1,4-dioxane crown ethers (CEs) and some of its homologues are described and analyzed. The effect of added C-atom within the CE ring (increasing the hydrophobicity of the CE ring by increasing the number of CH2-units) on the Li+ and Mg2+ complexation within a liquid-liquid extraction (LLE) is investigated and thermodynamically analyzed. The complex stability constant K, the change of entropy ΔS and enthalpy ΔH, and the Gibbs energy ΔG are determined. The enhanced hydrophobicity of the CE ring results in stronger complexation stability of the Mg2+ complex, while the Li+ complexes are less favored. This effect mainly occurs due to the increased entropy term with improved hydrophobicity of the CE. These results indicate a stronger extraction of Li+ in Mg2+-containing aqueous resources if more hydrophilic CEs are used.
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Affiliation(s)
- Iklima Oral
- Institute of Physical Chemistry, Universität Hamburg, Grindelallee 117, 20146 Hamburg, Germany
| | - Fanny Ott
- Institute of Physical Chemistry, Universität Hamburg, Grindelallee 117, 20146 Hamburg, Germany
| | - Volker Abetz
- Institute of Physical Chemistry, Universität Hamburg, Grindelallee 117, 20146 Hamburg, Germany.,Helmholtz-Zentrum Hereon, Institute of Membrane Research, Max-Planck-Straße 1, 21502 Geesthacht, Germany.
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Charyton M, Deboli F, Fischer P, Henrion G, Etienne M, Donten ML. Composite Anion Exchange Membranes Fabricated by Coating and UV Crosslinking of Low-Cost Precursors Tested in a Redox Flow Battery. Polymers (Basel) 2021; 13:polym13152396. [PMID: 34371998 PMCID: PMC8347460 DOI: 10.3390/polym13152396] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/16/2021] [Accepted: 07/17/2021] [Indexed: 01/07/2023] Open
Abstract
This paper presents a novel, cost-effective approach to the fabrication of composite anion exchange membranes (AEMs). Hierarchical AEMs have been fabricated by coating a porous substrate with an interpenetrating polymer network (IPN) layer where poly(vinylpyrrolidone) (PVP) is immobilized in a crosslinked matrix. The IPN matrix was formed by UV initiated radical crosslinking of a mixture of acrylamide-based monomers and acrylic resins. The fabricated membranes have been compared with a commercial material (Fumatech FAP 450) in terms of ionic transport properties and performance in a vanadium redox flow battery (VRFB). Measures of area-specific resistance (ASR) and vanadium permeability for the proposed membranes demonstrated properties approaching the commercial benchmark. These properties could be tuned by changing the content of PVP in the IPN coating. Higher PVP/matrix ratios facilitate a higher water uptake of the coating layer and thus lower ASR (as low as 0.58 Ω.cm2). On the contrary, lower PVP/matrix ratios allow to reduce the water uptake of the coating and hence decrease the vanadium permeability at the cost of a higher ASR (as high as 1.99 Ω.cm2). In VRFB testing the hierarchical membranes enabled to reach energy efficiency comparable with the commercial AEM (PVP_14—74.7%, FAP 450—72.7% at 80 mA.cm−2).
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Affiliation(s)
- Martyna Charyton
- Amer-Sil S.A., 61 Rue D’Olm, Kehlen, 8281 Luxembourg, Luxembourg; (M.C.); (F.D.)
- CNRS, Institut Jean Lamour (IJL), Université de Lorraine, 2 Allée André Guinier, F-54011 Nancy, France;
- CNRS, Laboratory of Physical Chemistry and Microbiology for the Environment (LCPME), Université de Lorraine, 405 Rue de Vandoeuvre, F-54600 Villers-lès-Nancy, France;
| | - Francesco Deboli
- Amer-Sil S.A., 61 Rue D’Olm, Kehlen, 8281 Luxembourg, Luxembourg; (M.C.); (F.D.)
- Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Peter Fischer
- Electrochemistry, Fraunhofer Institute for Chemical Technology ICT, Joseph-von-Fraunhofer, Straße 7, 76327 Pfinztal, Germany;
| | - Gerard Henrion
- CNRS, Institut Jean Lamour (IJL), Université de Lorraine, 2 Allée André Guinier, F-54011 Nancy, France;
| | - Mathieu Etienne
- CNRS, Laboratory of Physical Chemistry and Microbiology for the Environment (LCPME), Université de Lorraine, 405 Rue de Vandoeuvre, F-54600 Villers-lès-Nancy, France;
| | - Mateusz L. Donten
- Amer-Sil S.A., 61 Rue D’Olm, Kehlen, 8281 Luxembourg, Luxembourg; (M.C.); (F.D.)
- Correspondence:
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Oral I, Abetz V. A Highly Selective Polymer Material using Benzo-9-Crown-3 for the Extraction of Lithium in Presence of Other Interfering Alkali Metal Ions. Macromol Rapid Commun 2021; 42:e2000746. [PMID: 33644940 DOI: 10.1002/marc.202000746] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/11/2021] [Indexed: 12/13/2022]
Abstract
The recovery of lithium from global water resources continues to be challenging due to interfering metal ions with similar solution properties. Hence, a lithium-selective diblock copolymer system containing crown ethers (CEs) is developed. A polystyrene-block-poly(methacrylic acid) diblock copolymer is synthesized first via a one-pot solution-emulsion reversible addition-fragmentation chain transfer polymerization. A subsequent Steglich esterification yields the CE functionalized polymer. The complexation properties with different alkali metals are first investigated by liquid-liquid extraction (LLE) in dichloromethane (DCM) - water systems using free benzo-9-crown (B9C3), benzo-12-crown-4 (B12C4), and benzo-15-crown-5 (B15C5) CEs as reference components, followed by the correspondingly CE-functionalized polymers. Extraction complexation constants in the aqueous phase are determined and the impact of the complexation constants on the extractability is estimated. The B9C3 CE is especially appealing since it has the smallest cavity size among all CEs. It is too small to complex sodium or potassium ions; however, it forms sandwich complexes with a lithium-ion resulting in extraordinary complexation constants in polymer systems avoiding other interfering alkali metal ions. On this basis, a new material for the efficient extraction of lithium ion traces in global water resources is established.
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Affiliation(s)
- Iklima Oral
- Institute of Physical Chemistry, Universität, Hamburg, Martin-Luther-King-Platz 6, Hamburg, 20146, Germany
| | - Volker Abetz
- Institute of Physical Chemistry, Universität, Hamburg, Martin-Luther-King-Platz 6, Hamburg, 20146, Germany.,Helmholtz-Zentrum Geesthacht, Centre for Material and Coastal Research, Institute of Membrane Research, Max-Planck-Straße 1, Geesthacht, 21502, Germany
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Zhou K, Xu Z. Field-enhanced selectivity in nanoconfined ionic transport. NANOSCALE 2020; 12:6512-6521. [PMID: 32154818 DOI: 10.1039/c9nr10731b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Fluid transport confined in nanochannels shows ultrafast permeation and highly efficient separation performance. However, the size-controlled selectivity of hydrated ions with a similar valence and size, such as alkali ions, is well below 5. We propose in this work to boost ion selectivity through the interaction with the wall of flow channels, which can be enhanced by applying an external electric field across the channel. Molecular simulations show that for ions diffusing near the walls of a graphene nanochannel, the hydration shells are perturbed, endowing the contrast in ion-wall interactions to modify the ion-specific free energy landscape. The trapping/hopping nature of ion diffusion near the wall leads to the conclusion that the diffusivity depends on the free energy barriers rather than the hydration size. This effect can be magnified by elevating the field strength, yielding more than ∼10-fold enhancement in the diffusivity-specific selectivity. With recent experimental advances in external electric field control and local electric field modulation near the surface, this work demonstrates a possible route to achieve high selectivity of alkali ions in nanofluidics, and explore the molecular structures and dynamics of hydrated ions near a surface.
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Affiliation(s)
- Ke Zhou
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China.
| | - Zhiping Xu
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China.
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Pang X, Tao Y, Xu Y, Pan J, Shen J, Gao C. Enhanced monovalent selectivity of cation exchange membranes via adjustable charge density on functional layers. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117544] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Besha AT, Tsehaye MT, Aili D, Zhang W, Tufa RA. Design of Monovalent Ion Selective Membranes for Reducing the Impacts of Multivalent Ions in Reverse Electrodialysis. MEMBRANES 2019; 10:membranes10010007. [PMID: 31906203 PMCID: PMC7022468 DOI: 10.3390/membranes10010007] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 12/23/2019] [Accepted: 12/27/2019] [Indexed: 11/16/2022]
Abstract
Reverse electrodialysis (RED) represents one of the most promising membrane-based technologies for clean and renewable energy production from mixing water solutions. However, the presence of multivalent ions in natural water drastically reduces system performance, in particular, the open-circuit voltage (OCV) and the output power. This effect is largely described by the “uphill transport” phenomenon, in which multivalent ions are transported against the concentration gradient. In this work, recent advances in the investigation of the impact of multivalent ions on power generation by RED are systematically reviewed along with possible strategies to overcome this challenge. In particular, the use of monovalent ion-selective membranes represents a promising alternative to reduce the negative impact of multivalent ions given the availability of low-cost materials and an easy route of membrane synthesis. A thorough assessment of the materials and methodologies used to prepare monovalent selective ion exchange membranes (both cation and anion exchange membranes) for applications in (reverse) electrodialysis is performed. Moreover, transport mechanisms under conditions of extreme salinity gradient are analyzed and compared for a better understanding of the design criteria. The ultimate goal of the present work is to propose a prospective research direction on the development of new membrane materials for effective implementation of RED under natural feed conditions.
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Affiliation(s)
- Abreham Tesfaye Besha
- Department of Chemistry, College of Natural and Computational Science, Jigjiga University, P.O. Box 1020, Jigjiga, Ethiopia;
| | - Misgina Tilahun Tsehaye
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38 000 Grenoble, France;
| | - David Aili
- Department of Energy Conversion and Storage, Technical University of Denmark, Building 310, 2800 Kgs. Lyngby, Denmark;
| | - Wenjuan Zhang
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China;
| | - Ramato Ashu Tufa
- Department of Energy Conversion and Storage, Technical University of Denmark, Building 310, 2800 Kgs. Lyngby, Denmark;
- Correspondence:
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Yang L, Tang C, Ahmad M, Yaroshchuk A, Bruening ML. High Selectivities among Monovalent Cations in Dialysis through Cation-Exchange Membranes Coated with Polyelectrolyte Multilayers. ACS APPLIED MATERIALS & INTERFACES 2018; 10:44134-44143. [PMID: 30433759 DOI: 10.1021/acsami.8b16434] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Cation-exchange membranes allow preferential passage of cations over anions, but they show minimal selectivity among cations, which limits their use in ion separations. Recent studies show that modification of cation-exchange membranes with polyelectrolyte multilayers leads to exceptional monovalent/divalent cation electrodialysis selectivities, but no studies report high selectivity among monovalent ions. This work demonstrates that adsorption of protonated poly(allylamine) (PAH)/poly(4-styrenesulfonate) (PSS) multilayers on Nafion membranes leads to high K+/Li+ selectivities in Donnan dialysis, where K+ and Li+ ions in a source phase pass through the membrane and exchange with Na+ ions in a receiving phase. Addition of 0.01 M HNO3 to a source phase containing 0.01 M KNO3 and 0.01 M LiNO3 increases the K+/Li+ selectivity from 8 to ∼60 through (PAH/PSS)5PAH-coated Nafion membranes, primarily because of a ≥fivefold increase in K+ flux. These selectivities are much larger than the ratio of 1.9 for the aqueous diffusion coefficients of K+ and Li+, and uncoated Nafion membranes give a K+/Li+ selectivity <3. Bi-ionic transmembrane potential measurements at neutral pH confirm that the membrane is more permeable to K+ than Li+, but this selectivity is less than in Donnan dialysis with acidic solutions. In situ ellipsometry data indicate that PAH/PSS multilayers (assembled at pH 2.3, 7.5, or 9.3) swell at pH 2.0, and this swelling may open cation-exchange sites that preferentially bind K+ to enable highly selective transport. The coated membranes also exhibit modest selectivity for K+ over H+, suggesting selective transport based on preferential partitioning of K+ into the coatings. Selectivity declines when increasing the source-phase KNO3 concentration to 0.1 M, perhaps because the discriminating transport pathway saturates. Moreover, selectivities are lower in electrodialysis than in Donnan dialysis, presumably because electrodialysis engages other transport mechanisms, such as electroosmosis and strong electromigration.
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Affiliation(s)
| | | | | | - Andriy Yaroshchuk
- ICREA , pg.L.Companys 23 , 08010 Barcelona , Spain
- Department of Chemical Engineering , Polytechnic University of Catalonia , av. Diagonal 647 , 08028 Barcelona , Spain
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Luo H, Aboki J, Ji Y, Guo R, Geise GM. Water and Salt Transport Properties of Triptycene-Containing Sulfonated Polysulfone Materials for Desalination Membrane Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4102-4112. [PMID: 29314818 DOI: 10.1021/acsami.7b17225] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A series of triptycene-containing sulfonated polysulfone (TRP-BP) materials was prepared via condensation polymerization, and the desalination membrane-relevant fundamental water and salt transport properties (i.e., sorption, diffusion, and permeability coefficients) of the polymers were characterized. Incorporating triptycene into sulfonated polysulfone increased the water content of the material compared to sulfonated polysulfone materials that do not contain triptycene. No significant difference in salt sorption was observed between TRP-BP membranes and other sulfonated polysulfone membranes, suggesting that the presence of triptycene in the polymer did not dramatically affect thermodynamic interactions between salt and the polymer. Both water and salt diffusion coefficients in the TRP-BP membranes were suppressed relative to other sulfonated polysulfone materials with comparable water content, and these phenomena may result from the influence of triptycene on polymer chain packing and/or free-volume distribution, which could increase the tortuosity of the transport pathways in the polymers. Enhanced water/salt diffusivity selectivity was observed for some of the TRP-BP membranes relative to those materials that did not contain triptycene, and correspondingly, incorporation of triptycene into sulfonated polysulfone resulted in an increase, particularly for acid counterion form TRP-BP materials, in water/salt permeability selectivity, which is favorable for desalination membrane applications.
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Affiliation(s)
- Hongxi Luo
- Department of Chemical Engineering, University of Virginia , 102 Engineers' Way, Post Office Box 400741, Charlottesville, Virginia 22904, United States
| | - Joseph Aboki
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , 205 McCourtney Hall, Notre Dame, Indiana 46556, United States
| | - Yuanyuan Ji
- Department of Chemical Engineering, University of Virginia , 102 Engineers' Way, Post Office Box 400741, Charlottesville, Virginia 22904, United States
| | - Ruilan Guo
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , 205 McCourtney Hall, Notre Dame, Indiana 46556, United States
| | - Geoffrey M Geise
- Department of Chemical Engineering, University of Virginia , 102 Engineers' Way, Post Office Box 400741, Charlottesville, Virginia 22904, United States
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Ge L, Wu B, Yu D, Mondal AN, Hou L, Afsar NU, Li Q, Xu T, Miao J, Xu T. Monovalent cation perm-selective membranes (MCPMs): New developments and perspectives. Chin J Chem Eng 2017. [DOI: 10.1016/j.cjche.2017.06.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Cross-linked sulfonated poly(arylene ether nitrile)s with low swelling and high proton conductivity. Macromol Res 2017. [DOI: 10.1007/s13233-017-5164-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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