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Chaudhary CK, Dasgupta PK. Forbidden ion transport through cation exchange membranes. Talanta 2024; 279:126581. [PMID: 39032459 DOI: 10.1016/j.talanta.2024.126581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/10/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
Cation exchange membranes (CEMs) are widely used in many applications. The fixed anionic groups e.g., COO-, -SO3-, etc. in the polymer matrix ideally allows the passage only of oppositely charged cations, driven by a potential or a concentration gradient. Anions, charged negative, the same as the membrane matrix, cannot pass through the membrane due to electrostatic repulsion. Such "Donnan-forbidden" passage can, however, occur to some degree, if the electrical or concentration gradient is high enough to overcome the "Donnan barrier". Except for salt uptake/transport in concentrated salt solutions, the factors that govern such Forbidden Ion Transport (FIT) have rarely been studied. In most applications of transmembrane ion transport, whether electrically driven as in electrodialysis, or concentration-driven, it is the transport of the counterion to the fixed charged groups, such as that of the proton through a CEM, that is usually of interest. Nevertheless, CEMs are also of interest in analytical chemistry, specifically in suppressed ion chromatography. As used in membrane suppressors, both transport of permitted ions and rejection of forbidden ions are important. If the latter is indeed governed by electrostatic factors, other things being equal, the primary governing factor should be the charge density of the membrane, tantamount to its ion exchange capacity (IEC). In fabricating microscale suppressors, we found useful to synthesize a new ion exchange polymer that can be easily molded to make tubular microconduits. Despite a high IEC of this material, FIT was also found to be surprisingly high. We measured several relevant properties for thirteen commercial and four custom-made membranes to discover that while FIT is indeed linearly related to 1/IEC for a significant number of these membranes, for very high water-content membranes, FIT may be overwhelmingly governed by the water content of the membrane. In addition, FIT through all CEMs differ greatly among strong acids, they may still be transported as the molecular acids and the extent is in the same order as the expected activity of the molecular acid in the CEM. These results are discussed with the perspective that even for strong acids, the transport does take place as un-ionized molecular acids.
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Affiliation(s)
- Chandan K Chaudhary
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX, 76019-0065, USA
| | - Purnendu K Dasgupta
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX, 76019-0065, USA.
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2
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Elozeiri AAE, Dykstra JE, Rijnaarts HHM, Lammertink RGH. Multi-component ion equilibria and transport in ion-exchange membranes. J Colloid Interface Sci 2024; 673:971-984. [PMID: 38935981 DOI: 10.1016/j.jcis.2024.06.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/24/2024] [Accepted: 06/03/2024] [Indexed: 06/29/2024]
Abstract
At the interface between an ion-exchange membrane and a multi-electrolyte solution, charged species redistribute themselves to minimize the free energy of the system. In this paper, we explore the Donnan equilibrium of membranes with quaternary electrolyte (Na+/Mg2+/K+/Ca2+/Cl-) solutions, experimentally. The data was used to calculate the ion activity coefficients for six commercial cation-exchange membranes (CEMs). After setting one of the activity coefficients to an arbitrary value, we used the remaining (N-1) activity coefficients as fitting parameters to describe the equilibrium concentrations of (N) ionic species with a mean relative error of 3 %. At increasing solution ionic strengths, the equivalent ion fractions of monovalent counter-ions inside the membrane increased at the expense of the multivalent ones in alignment with the Donnan equilibrium theory. The fitted activity coefficients were employed in a transport model that simulated a Donnan dialysis experiment involving all four cations simultaneously. The arbitrary value assigned to one activity coefficient affects the calculated Donnan potential at the membrane interface. Nevertheless, this arbitrary value does not affect the prediction of the ion concentrations inside the membrane and consequently does not affect the modeled ion fluxes.
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Affiliation(s)
- Alaaeldin A E Elozeiri
- Environmental Technology, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Jouke E Dykstra
- Environmental Technology, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Huub H M Rijnaarts
- Environmental Technology, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Rob G H Lammertink
- Membrane Science and Technology, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the Netherlands.
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3
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Liu Y, Zhou C, Chen L, Du J, Li Q, Lu C, Tan L, Huang X, Liu J, Dong L. Self-standing membranes for separation: Achievements and opportunities. Adv Colloid Interface Sci 2024; 332:103269. [PMID: 39128434 DOI: 10.1016/j.cis.2024.103269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/28/2024] [Accepted: 08/03/2024] [Indexed: 08/13/2024]
Abstract
Supported membranes and mixed matrix membranes have a limitation of harming the mass transfer due to the incompatibility between the support layer or the matrix and the active components of the membrane. Self-standing membranes, which could structurally abandon the support layer, altogether avoid the adverse effect, thus greatly facilitating the transmembrane mass transfer process. However, the abandonment of the support layer also reduces the membrane's mechanical properties and formability. In this review, our emphasis will be on self-standing membranes within the realm of materials and separation engineering. We will explore the materials employed in the fabrication of self-standing membranes, highlighting their ability to simultaneously enhance membrane performance and promote self-standing characteristics. Additionally, we will delve into the diverse techniques utilized for crafting self-standing membranes, encompassing interfacial polymerization, filtration, solvent casting, Langmuir-Blodgett & layer-by-layer assembly, electrospinning, compression, etc. Throughout the discussion, the merits and drawbacks associated with each of these preparation methods were elucidated. We also provide a brief overview of the applications of self-standing membranes, including water purification, gas separation, organic solvent nanofiltration, electrochemistry, and membrane reactor, as well as a brief description of the general strategies for performance enhancement of self-standing membranes. Finally, the current status of self-standing membranes and the challenges they may encounter were discussed.
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Affiliation(s)
- Yunhao Liu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Cailong Zhou
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
| | - Li Chen
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Jingcheng Du
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230052, PR China
| | - Qun Li
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Chenyang Lu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Luxi Tan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
| | - Xiaowei Huang
- Department of Pharmacy, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou 362000, PR China.
| | - Jiangtao Liu
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230052, PR China
| | - Lichun Dong
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
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4
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Jain G, Sanghamitra S, Mukherjee M, Mandal MK, Chaudhuri RG, Chakrabarti S. De novo Cu-MOF@CNS nanocomposite coated on a cotton fibrils framework for sustainable solar-driven desalination. NANOSCALE 2024; 16:16684-16696. [PMID: 39171689 DOI: 10.1039/d4nr01930j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Environmental researchers are extremely concerned about addressing the declining availability of drinking water, which is a critical issue in many nations. Solar-driven desalination is an emerging and pioneering renewable approach to reduce potable water scarcity that is suitable for remote locations, developing countries, and disaster zones as it does not require additional energy supply. However, there are still issues with the scalable preparation of photothermal materials, such as achieving low cost and widening the assortment of useful applications. Conventional carbon- and metal-based absorbers are intricate and fragile, which make them difficult to install and transport in places with minimal infrastructure. Thus, a universal process for creating adaptable solar evaporators is sorely required. Herein, we have come up with a holistic approach using a solar absorber (GJ-01(Cal)) derived from a Cu-MOF (HKUST-1) and carbon nanosheets (CNSs) for generating potable water from saline water using solar radiation. The as-synthesized material provides high-performance photothermal water evaporation when illuminated under solar irradiation at the air-water interface. Moreover, its porous structure, high photothermal conversion efficiency, rapid water flow, and heat insulation make it appropriate for saline water desalination. CNS play a pivotal role in improving the photothermal features of the solar absorber (GJ-01(Cal)) in terms of conjugation to promote Cu(0) species and pyrrolic nitrogen (P-N) amplification and thereby enrich the p-type nature of the absorber's triphasic configuration. With these photothermal factors, the localised surface plasmon resonance (LSPR) of electrons increases and achieves high solar spectrum absorption. The GJ-01(Cal) was further coated on porous cotton fibrils (CF) that regulate photothermal interfacial evaporation (PTIE) by allowing water transportation via capillary action. This assemblage of the nanocomposite on CF efficiently evaporates water at a higher surface temperature of ∼47 °C under one solar illumination, achieving 4.23 kg m-2 h-1 of evaporation flux and 96.5% light-to-heat conversion efficiency. Interestingly, the GJ-01(Cal) coated over CF can be recycled at least 10 times. Additionally, it offers scalable production for higher photothermal efficiency with a flexible substrate as a solar evaporator and is beneficial for society paving new horizons towards a sustainable environment.
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Affiliation(s)
- Geetika Jain
- Amity Institute of Nanotechnology, Amity University Noida, UP 201313, India
- Amity Institute of Click Chemistry Research & Studies, Amity University Noida, UP 201313, India.
| | - Sinu Sanghamitra
- Department of Chemical Engineering, National Institute of Technology Durgapur, WB 713209, India.
| | - Monalisa Mukherjee
- Amity Institute of Click Chemistry Research & Studies, Amity University Noida, UP 201313, India.
| | - Mrinal Kanti Mandal
- Department of Chemical Engineering, National Institute of Technology Durgapur, WB 713209, India.
| | - Rajib Ghosh Chaudhuri
- Department of Chemical Engineering, National Institute of Technology Durgapur, WB 713209, India.
| | - Sandip Chakrabarti
- Amity Institute of Click Chemistry Research & Studies, Amity University Noida, UP 201313, India.
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Jiang F, Liu M, Li S, Liang M, Hu X, Li F. Mechanism Study on the Immobilization of Cu 2+/Pb 2+ in Aqueous Phase by Mineral Co-Milling-Modified Biochar. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39146477 DOI: 10.1021/acs.langmuir.4c00948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
A large number of studies have shown that the modification of biochar can greatly improve its adsorption capacity. This study adopts a one-step ball milling technology without solvent medium, using sawdust biochar (600 °C) and attapulgite/diatomaceous earth to prepare MABC10%/MDBC10% (mass ratio: 10% attapulgite/diatomite +90% biochar coabrasive). Characterization experiments show that attapulgite/diatomite was successfully loaded on biochar and has more C/O functional groups and wider adsorption pore sizes. Adsorption kinetics and isotherm experiments show that the adsorption process of MABC10% and MDBC10% on Cu2+/Pb2+ was mainly multilayer chemical adsorption. The adsorption capacities of MABC10% and MDBC10% for Cu2+ were 40.85 and 65.20 mg·L-1, respectively. The adsorption amounts of Pb2+ were 82.63 and 71.32 mg·L-1, respectively. The particle diffusion model shows that the adsorption process was controlled by both the surface adsorption rate limitation and boundary layer diffusion. The higher acidity in the solution will cause part of the negative charges on the surface of attapulgite/diatomite to be neutralized, thereby hindering its adsorption of Cu2+/Pb2+. The presence of coexisting ions did not significantly affect the adsorption performance. Mechanistic studies have shown that pore diffusion, active sites provided by C/O functional groups, electrostatic interactions, and cation exchange are the main mechanisms of MABC10% adsorption of Cu2+/Pb2+. In summary, MABC10% has a significant adsorption synergistic effect compared to MBC. It was an economical and effective adsorbent, and the higher the pH value of the wastewater, the more significant the adsorption effect.
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Affiliation(s)
- Fei Jiang
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233100, China
| | - Min Liu
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233100, China
| | - Shuangjiang Li
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233100, China
| | - Mengdi Liang
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233100, China
| | - Xingyu Hu
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233100, China
| | - Feiyue Li
- College of Resources and Environment Science, Anhui Science and Technology University, Fengyang 233100, China
- Institute of Soil Remediation and Solid Waste Recycling, Anhui Science and Technology University, Fengyang 233100, China
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Timchenko SL, Ambrozevich SA, Zadorozhnyi EN, Zadorozhnyi NA, Skrabatun AV, Sharandin EA. Optical Characteristics of a New Molecular Complex: "Nafion-Colloidal CdSe/CdS/ZnS Nanocrystals". Polymers (Basel) 2024; 16:2092. [PMID: 39065409 PMCID: PMC11280997 DOI: 10.3390/polym16142092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 07/04/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
Here, the optical properties of the Nafion polymer membrane containing colloidal CdSe/CdS/ZnS nanocrystals embedded by diffusion have been studied. The CdSe/CdS/ZnS nanocrystals have a core/shell/shell appearance. All experiments were carried out at room temperature (22 ± 2) °C. A toluene solution was used to provide mobility to the active sulfone groups of the Nafion membrane and to embed the nanocrystals inside the membrane. The diffusion process of colloidal CdSe/CdS/ZnS nanocrystals into Nafion proton exchange membrane has resulted in a new molecular complex "Nafion-colloidal CdSe/CdS/ZnS nanocrystals". The kinetics of the nanocrystals embedding into the membrane matrix was investigated using luminescence analysis and absorption spectroscopy techniques. The embedding rate of CdSe/CdS/ZnS nanocrystals into the Nafion polymer membrane was approximately 4·10-3 min-1. The presence of new luminescence centers in the membrane was proved independently by laser emission spectroscopy. The luminescence spectrum of the resulting molecular complex contains intensity maxima at wavelengths of 538, 588, 643 and 700 nm. The additional luminescence maximum observed at the 643 nm wavelength was not recorded in the original membrane, solvent or in the spectrum of the semiconductor nanoparticles. The luminescence maximum of the colloidal CdSe/CdS/ZnS nanocrystals was registered at a wavelength of 634 nm. The intensity of the luminescence spectrum of the membrane with embedded nanocrystals was found to be higher than the intensity of the secondary emission peak of the initial nanocrystals, which is important for the practical use of the "Nafion-colloidal nanocrystals" complex in optical systems. The lines contained in the luminescence spectrum of the membrane, which has been in solution with colloidal nanocrystals for a long time, registered upon its drying, show the kinetics of the formation of the molecular complex "Nafion membrane-nanocrystals". Colloidal nanocrystals located in the Nafion matrix represent an analog of a luminescent transducer.
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Affiliation(s)
- Svetlana L. Timchenko
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (S.A.A.); (E.N.Z.); (N.A.Z.); (A.V.S.); (E.A.S.)
| | - Sergey A. Ambrozevich
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (S.A.A.); (E.N.Z.); (N.A.Z.); (A.V.S.); (E.A.S.)
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninskiy Prospekt 53, 119991 Moscow, Russia
| | - Evgenii N. Zadorozhnyi
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (S.A.A.); (E.N.Z.); (N.A.Z.); (A.V.S.); (E.A.S.)
| | - Nikolai A. Zadorozhnyi
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (S.A.A.); (E.N.Z.); (N.A.Z.); (A.V.S.); (E.A.S.)
| | - Alexander V. Skrabatun
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (S.A.A.); (E.N.Z.); (N.A.Z.); (A.V.S.); (E.A.S.)
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninskiy Prospekt 53, 119991 Moscow, Russia
| | - Evgenii A. Sharandin
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (S.A.A.); (E.N.Z.); (N.A.Z.); (A.V.S.); (E.A.S.)
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7
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Yang PX, Wang J, Liu HL, Guo ZY, Huang ZH, Zhang PP, Ji ZY. High-Performance Monovalent Selective Cation Exchange Membranes with Ionically Cross-Linkable Side Chains: Effect of the Acidic Groups. ACS APPLIED MATERIALS & INTERFACES 2024; 16:35576-35587. [PMID: 38940328 DOI: 10.1021/acsami.4c07085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Inspired by the charge-governed protein channels located in the cell membrane, a series of polyether ether ketone-based polymers with side chains containing ionically cross-linkable quaternary ammonium groups and acidic groups have been designed and synthesized to prepare monovalent cation-selective membranes (MCEMs). Three acidic groups (sulfonic acid, carboxylic acid, and phenolic hydroxyl) with different acid dissociation constant (pKa) were selected to form the ionic cross-linking structure with quaternary ammonium groups in the membranes. The ionic cross-linking induced the nanophase separation and constructed ionic channels, which resulted in excellent mechanical performance and high cation fluxes. Interesting, the cation flux of membranes increased as the ionization of acidic groups increase, but the selectivity of MCEMs did not follow the same trend, which was mainly dependent on the affinity between the functional groups and the cations. Carboxyl group-containing MCEMs exhibited the best selectivity (9.01 for Li+/Mg2+), which was higher than that of the commercial monovalent cation-selective CIMS membrane. Therefore, it is possible to prepare stable MCEMs through a simple process using ionically cross-linkable polymers, and tuning acidic groups in the membranes provided an attractive approach to improving the cation flux and selectivity of MCEMs.
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Affiliation(s)
- Peng-Xu Yang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300130, China
| | - Jing Wang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300130, China
| | - Hui-Li Liu
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300130, China
| | - Zhi-Yuan Guo
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300130, China
| | - Zhi-Hui Huang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300130, China
| | - Pan-Pan Zhang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300130, China
| | - Zhi-Yong Ji
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300130, China
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Madhuranthakam CMR, Abudaqqa WSK, Fowler M. Advances in Polyvinyl Alcohol-Based Membranes for Fuel Cells: A Comprehensive Review on Types, Synthesis, Modifications, and Performance Optimization. Polymers (Basel) 2024; 16:1775. [PMID: 39000631 PMCID: PMC11243812 DOI: 10.3390/polym16131775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/05/2024] [Accepted: 06/14/2024] [Indexed: 07/17/2024] Open
Abstract
Fuel cell technology is at the forefront of sustainable energy solutions, and polyvinyl alcohol (PVA) membranes play an important role in improving performance. This article thoroughly investigates the various varieties of PVA membranes, their production processes, and the numerous modification tactics used to solve inherent problems. Various methods were investigated, including chemical changes, composite blending, and the introduction of nanocomposites. The factors impacting PVA membranes, such as proton conductivity, thermal stability, and selectivity, were investigated to provide comprehensive knowledge. By combining various research threads, this review aims to completely investigate the current state of PVA membranes in fuel cell applications, providing significant insights for both academic researchers and industry practitioners interested in efficient and sustainable energy conversion technologies. The transition from traditional materials such as Nafion to PVA membranes has been prompted by limitations associated with the former, such as complex synthesis procedures, reduced ionic conductivity at elevated temperatures, and prohibitively high costs, which have hampered their widespread adoption. As a result, modern research efforts are increasingly focused on the creation of alternative membranes that can compete with conventional technical efficacy and economic viability in the context of fuel cell technologies.
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Affiliation(s)
| | - Weam S K Abudaqqa
- Chemical Engineering Department, Abu Dhabi University, Abu Dhabi P.O. Box 59911, United Arab Emirates
| | - Michael Fowler
- Chemical Engineering Department, University of Waterloo, Waterloo, ON N2L 3G5, Canada
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Zhou S, Mei Y, Yang W, Jiang C, Guo H, Feng SP, Tang CY. Energy harvesting from acid mine drainage using a highly proton/ion-selective thin polyamide film. WATER RESEARCH 2024; 255:121530. [PMID: 38564897 DOI: 10.1016/j.watres.2024.121530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/04/2024]
Abstract
A huge chemical potential difference exists between the acid mine drainage (AMD) and the alkaline neutralization solution, which is wasted in the traditional AMD neutralization process. This study reports, for the first time, the harvest of this chemical potential energy through a controlled neutralization of AMD using H+-conductive films. Polyamide films with controllable thickness achieved much higher H+ conductance than a commercially available cation exchange membrane (CEM). Meanwhile, the optimal polyamide film had an excellent H+/Ca2+ selectivity of 63.7, over two orders of magnitude higher than that of the CEM (0.3). The combined advantages of fast proton transport and high proton/ion selectivity greatly enhanced the power generation of the AMD battery. The power density was 3.1 W m-2, which is over one order of magnitude higher than that of the commercial CEM (0.2 W m-2). Our study provides a new sustainable solution to address the environmental issues of AMD while simultaneously enabling clean energy production.
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Affiliation(s)
- Shenghua Zhou
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR 999077, PR China
| | - Ying Mei
- Research and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, PR China.
| | - Wulin Yang
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China
| | - Chenxiao Jiang
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230052, PR China
| | - Hao Guo
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR 999077, PR China; Institute of Environment and Ecology, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China
| | - Shien-Ping Feng
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR 999077, PR China; Department of Advanced Design and Systems Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, PR China
| | - Chuyang Y Tang
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR 999077, PR China.
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10
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Xu T, Wu B, Li W, Li Y, Zhu Y, Sheng F, Li Q, Ge L, Li X, Wang H, Xu T. Perfect confinement of crown ethers in MOF membrane for complete dehydration and fast transport of monovalent ions. SCIENCE ADVANCES 2024; 10:eadn0944. [PMID: 38718127 PMCID: PMC11078184 DOI: 10.1126/sciadv.adn0944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 04/04/2024] [Indexed: 05/12/2024]
Abstract
Fast transport of monovalent ions is imperative in selective monovalent ion separation based on membranes. Here, we report the in situ growth of crown ether@UiO-66 membranes at a mild condition, where dibenzo-18-crown-6 (DB18C6) or dibenzo-15-crown-5 is perfectly confined in the UiO-66 cavity. Crown ether@UiO-66 membranes exhibit enhanced monovalent ion transport rates and mono-/divalent ion selectivity, due to the combination of size sieving and interaction screening effects toward the complete monovalent ion dehydration. Specifically, the DB18C6@UiO-66 membrane shows a permeation rate (e.g., K+) of 1.2 mol per square meter per hour and a mono-/divalent ion selectivity (e.g., K+/Mg2+) of 57. Theoretical calculations and simulations illustrate that, presumably, ions are completely dehydrated while transporting through the DB18C6@UiO-66 cavity with a lower energy barrier than that of the UiO-66 cavity. This work provides a strategy to develop efficient ion separation membranes via integrating size sieving and interaction screening and to illuminate the effect of ion dehydration on fast ion transport.
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Affiliation(s)
- Tingting Xu
- Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Bin Wu
- School of Chemistry and Chemical Engineering, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, China
| | - Wenmin Li
- Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Yifan Li
- Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Yanran Zhu
- Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Fangmeng Sheng
- Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Qiuhua Li
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Liang Ge
- Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Xingya Li
- Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Huanting Wang
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Tongwen Xu
- Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
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11
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Deschênes Gagnon R, Langevin MÈ, Lutin F, Bazinet L. Identification of Fouling Occurring during Coupled Electrodialysis and Bipolar Membrane Electrodialysis Treatment for Tofu Whey Protein Recovery. MEMBRANES 2024; 14:88. [PMID: 38668116 PMCID: PMC11052131 DOI: 10.3390/membranes14040088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/04/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024]
Abstract
Tofu whey, a by-product of tofu production, is rich in nutrients such as proteins, minerals, fats, sugars and polyphenols. In a previous work, protein recovery from tofu whey was studied by using a coupled environmental process of ED + EDBM to valorize this by-product. This process allowed protein recovery by reducing the ionic strength of tofu whey during the ED process and acidifying the proteins to their isoelectric point during EDBM. However, membrane fouling was not investigated. The current study focuses on the fouling of membranes at each step of this ED and EDBM process. Despite a reduction in the membrane conductivities and some changes in the mineral composition of the membranes, no scaling was evident after three runs of the process with the same membranes. However, it appeared that the main fouling was due to the presence of isoflavones, the main polyphenols in tofu whey. Indeed, a higher concentration was observed on the AEMs, giving them a yellow coloration, while small amounts were found in the CEMs, and there were no traces on the BPMs. The glycosylated forms of isoflavones were present in higher concentrations than the aglycone forms, probably due to their high amounts of hydroxyl groups, which can interact with the membrane matrices. In addition, the higher concentration of isoflavones on the AEMs seems to be due to a combination of electrostatic interactions, hydrogen bonding, and π-π stacking, whereas only π-π stacking and hydrogen bonds were possible with the CEMs. To the best of our knowledge, this is the first study to investigate the potential fouling of BPMs by polyphenols, report the fouling of IEMs by isoflavones and propose potential interactions.
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Affiliation(s)
- Rosie Deschênes Gagnon
- Institute of Nutrition and Functional Foods (INAF), Food Science Department, Laboratoire de Transformation Alimentaire et Procédés ÉlectroMembranaires (LTAPEM/Laboratory of Food Processing and ElectroMembrane Processes), Université Laval, Quebec City, QC G1V 0A6, Canada;
| | - Marie-Ève Langevin
- Eurodia Industrie S.A.S—Zac Saint Martin, Impasse Saint Martin, 84120 Pertuis, France; (M.-È.L.); (F.L.)
| | - Florence Lutin
- Eurodia Industrie S.A.S—Zac Saint Martin, Impasse Saint Martin, 84120 Pertuis, France; (M.-È.L.); (F.L.)
| | - Laurent Bazinet
- Institute of Nutrition and Functional Foods (INAF), Food Science Department, Laboratoire de Transformation Alimentaire et Procédés ÉlectroMembranaires (LTAPEM/Laboratory of Food Processing and ElectroMembrane Processes), Université Laval, Quebec City, QC G1V 0A6, Canada;
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12
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Ramos RL, Shirdast S, Aliaskari M, Rosentreter H, Lerch A, Schäfer AI. Nitrogen compounds removal from brackish water by electrodialysis at fixed electric potential and dynamic current density operations. WATER RESEARCH 2024; 250:121016. [PMID: 38134857 DOI: 10.1016/j.watres.2023.121016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/04/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023]
Abstract
Nitrogen (N) compounds can occur in water resources from natural and anthropogenic activities. It is ideal that these contaminants be removed before water consumption. As water quality has been affected by increased salinity and pH variation, more advanced and robust technologies such as electrodialysis (ED) can be considered for simultaneous desalination and pollutant removal. In this context, the removal of N-species (NO3-, NO2-, NH4+, and CH4N2O) from brackish water by ED was investigated for different feed water quality, considering increased salinity (0 - 10g/L NaCl) and pH variation (3 - 11), under limit current density (LCD) at fixed electric potential condition. The applied electric potential (5 - 25V) under, at, and over the LCD at fixed electric potential and dynamic current density (DCD), as a percentage of LCD (0.4 - 1.2), were analyzed to improve the process. In addition, energy efficiency in the form of specific energy consumption (SEC) and current efficiency (CE) were assessed for ED at fixed electric potential and DCD. The results showed that, at extreme pH of the feed water, the removal of NO2- and NH4+ can be affected, while NO3-was the most stable compound with pH variation. An increase in feed water salinity just slightly impacted the removal of N-compounds, due to the similar characteristics of the ions in the water. The increase in electric potential at fixed electric potential or DCD increased the removal and molar flux of N-compounds. However, operating over the LCD increased the SEC of the ED process while changes in removal were not significant. DCD procedures resulted in higher CE and shorter run time of the experiments. Therefore, ED proved to be a suitable treatment technique to produce fresh water due to the selective removal of the studied ions, especially at 15V (fixed electrical potential) and 0.8 LCD (DCD) related to removal, molar flux, and run time to achieve guidelines.
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Affiliation(s)
- Ramatisa Ladeia Ramos
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Shahram Shirdast
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany; Institute of Urban and Industrial Water Management, Chair of Process Engineering in Hydro Systems, TUD Dresden University of Technology, Dresden 01062, Germany
| | - Mehran Aliaskari
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Hanna Rosentreter
- Institute of Urban and Industrial Water Management, Chair of Process Engineering in Hydro Systems, TUD Dresden University of Technology, Dresden 01062, Germany
| | - André Lerch
- Institute of Urban and Industrial Water Management, Chair of Process Engineering in Hydro Systems, TUD Dresden University of Technology, Dresden 01062, Germany
| | - Andrea Iris Schäfer
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany.
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13
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Huang Y, Fan H, Yip NY. Mobility of Condensed Counterions in Ion-Exchange Membranes: Application of Screening Length Scaling Relationship in Highly Charged Environments. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:836-846. [PMID: 38147509 DOI: 10.1021/acs.est.3c06068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Ion-exchange membranes (IEMs) are widely used in water, energy, and environmental applications, but transport models to accurately simulate ion permeation are currently lacking. This study presents a theoretical framework to predict ionic conductivity of IEMs by introducing an analytical model for condensed counterion mobility to the Donnan-Manning model. Modeling of condensed counterion mobility is enabled by the novel utilization of a scaling relationship to describe screening lengths in the densely charged IEM matrices, which overcame the obstacle of traditional electrolyte chemistry theories breaking down at very high ionic strength environments. Ionic conductivities of commercial IEMs were experimentally characterized in different electrolyte solutions containing a range of mono-, di-, and trivalent counterions. Because the current Donnan-Manning model neglects the mobility of condensed counterions, it is inadequate for modeling ion transport and significantly underestimated membrane conductivities (by up to ≈5× difference between observed and modeled values). Using the new model to account for condensed counterion mobilities substantially improved the accuracy of predicting IEM conductivities in monovalent counterions (to as small as within 7% of experimental values), without any adjustable parameters. Further adjusting the power law exponent of the screen length scaling relationship yielded reasonable precision for membrane conductivities in multivalent counterions. Analysis reveals that counterions are significantly more mobile in the condensed phase than in the uncondensed phase because electrostatic interactions accelerate condensed counterions but retard uncondensed counterions. Condensed counterions still have lower mobilities than ions in bulk solutions due to impedance from spatial effects. The transport framework presented here can model ion migration a priori with adequate accuracy. The findings provide insights into the underlying phenomena governing ion transport in IEMs to facilitate the rational development of more selective membranes.
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Affiliation(s)
- Yuxuan Huang
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027-6623, United States
| | - Hanqing Fan
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027-6623, United States
| | - Ngai Yin Yip
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027-6623, United States
- Columbia Water Center, Columbia University, New York, New York 10027-6623, United States
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14
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Khan IA, Alzahrani AS, Ali S, Mansha M, Tahir MN, Khan M, Qayyum HA, Khan SA. Development of Membranes and Separators to Inhibit Cross-Shuttling of Sulfur in Polysulfide-Based Redox Flow Batteries: A Review. CHEM REC 2024; 24:e202300171. [PMID: 37606899 DOI: 10.1002/tcr.202300171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/08/2023] [Indexed: 08/23/2023]
Abstract
The global rapid transition from fossil fuels to renewable energy resources necessitates the implementation of long-duration energy storage technologies owing to the intermittent nature of renewable energy sources. Therefore, the deployment of grid-scale energy storage systems is inevitable. Sulfur-based batteries can be exploited as excellent energy storage devices owing to their intrinsic safety, low cost of raw materials, low risk of environmental hazards, and highest theoretical capacities (gravimetric: 2600 Wh/kg and volumetric: 2800 Wh/L). However, sulfur-based batteries exhibit certain scientific limitations, such as polysulfide crossover, which causes rapid capacity decay and low Coulombic efficiency, thereby hindering their implementation at a commercial scale. In this review article, we focus on the latest research developments between 2012-2023 to improve the separators/membranes and overcome the shuttle effect associated with them. Various categories of ion exchange membranes (IEMs) used in redox batteries, particularly polysulfide redox flow batteries and lithium-sulfur batteries, are discussed in detail. Furthermore, advances in IEM constituents are summarized to gain insights into different fundamental strategies for attaining targeted characteristics, and a critical analysis is proposed to highlight their efficiency in mitigating sulfur cross-shuttling issues. Finally, future prospects and recommendations are suggested for future research toward the fabrication of more effective membranes with desired properties.
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Affiliation(s)
- Ibad Ali Khan
- Department of Materials Science and Engineering, College of Chemical Sciences, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Atif Saeed Alzahrani
- Department of Materials Science and Engineering, College of Chemical Sciences, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Shahid Ali
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Muhammad Mansha
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Muhammad Nawaz Tahir
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Majad Khan
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Hafiz Adil Qayyum
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
- Department of Physics, College of General Studies, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabi
| | - Safyan Akram Khan
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
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15
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Tripathi M, Singh S, Pathak S, Kasaudhan J, Mishra A, Bala S, Garg D, Singh R, Singh P, Singh PK, Shukla AK, Pathak N. Recent Strategies for the Remediation of Textile Dyes from Wastewater: A Systematic Review. TOXICS 2023; 11:940. [PMID: 37999592 PMCID: PMC10674586 DOI: 10.3390/toxics11110940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023]
Abstract
The presence of dye in wastewater causes substantial threats to the environment, and has negative impacts not only on human health but also on the health of other organisms that are part of the ecosystem. Because of the increase in textile manufacturing, the inhabitants of the area, along with other species, are subjected to the potentially hazardous consequences of wastewater discharge from textile and industrial manufacturing. Different types of dyes emanating from textile wastewater have adverse effects on the aquatic environment. Various methods including physical, chemical, and biological strategies are applied in order to reduce the amount of dye pollution in the environment. The development of economical, ecologically acceptable, and efficient strategies for treating dye-containing wastewater is necessary. It has been shown that microbial communities have significant potential for the remediation of hazardous dyes in an environmentally friendly manner. In order to improve the efficacy of dye remediation, numerous cutting-edge strategies, including those based on nanotechnology, microbial biosorbents, bioreactor technology, microbial fuel cells, and genetic engineering, have been utilized. This article addresses the latest developments in physical, chemical, eco-friendly biological and advanced strategies for the efficient mitigation of dye pollution in the environment, along with the related challenges.
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Affiliation(s)
- Manikant Tripathi
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Sakshi Singh
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Sukriti Pathak
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Jahnvi Kasaudhan
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Aditi Mishra
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Saroj Bala
- Department of Microbiology, Punjab Agricultural University, Ludhiana 141001, India
| | - Diksha Garg
- Department of Microbiology, Punjab Agricultural University, Ludhiana 141001, India
| | - Ranjan Singh
- Department of Microbiology, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Pankaj Singh
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Pradeep Kumar Singh
- Department of Biochemistry, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | | | - Neelam Pathak
- Department of Biochemistry, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
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16
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Jett B, Flynn A, Sigman MS, Sanford MS. Identifying structure-function relationships to modulate crossover in nonaqueous redox flow batteries. JOURNAL OF MATERIALS CHEMISTRY. A 2023; 11:22288-22294. [PMID: 38213509 PMCID: PMC10783818 DOI: 10.1039/d3ta02633g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Nonaqueous redox flow batteries (NARFBs) offer a promising solution for large-scale storage of renewable energy. However, crossover of redox active molecules between the two sides of the cell is a major factor limiting their development, as most selective separators are designed for deployment in water, rather than organic solvents. This report describes a systematic investigation of the crossover rates of redox active organic molecules through an anion exchange separator under RFB-relevant non-aqueous conditions (in acetonitrile/KPF6) using a combination of experimental and computational methods. A structurally diverse set of neutral and cationic molecules was selected, and their rates of crossover were determined experimentally with the organic solvent-compatible anion exchange separator Fumasep FAP-375-PP. The resulting data were then fit to various descriptors of molecular size, charge, and hydrophobicity (overall charge, solution diffusion coefficient, globularity, dynamic volume, dynamic surface area, clogP). This analysis resulted in multiple statistical models of crossover rates for this separator. These models were then used to predict tether groups that dramatically slow the crossover of small organic molecules in this system.
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Affiliation(s)
- Brianna Jett
- Department of Chemistry, University of Michigan, 930N University Ave, Ann Arbor, MI 48109, USA
- Joint Center for Energy Storage Research, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA
| | - Autumn Flynn
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, USA
- Joint Center for Energy Storage Research, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, USA
- Joint Center for Energy Storage Research, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA
| | - Melanie S Sanford
- Department of Chemistry, University of Michigan, 930N University Ave, Ann Arbor, MI 48109, USA
- Joint Center for Energy Storage Research, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA
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17
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Perveen S, Hussain SG, Ahmed MJ, Khawar R, Siraj TB, Saleem M. A Viable and sustainable flat- membrane plate-and-frame module for spent acid regeneration and metal ion recovery. Heliyon 2023; 9:e18344. [PMID: 37520977 PMCID: PMC10382638 DOI: 10.1016/j.heliyon.2023.e18344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/05/2023] [Accepted: 07/13/2023] [Indexed: 08/01/2023] Open
Abstract
This study provides techno-economical insights for acid regeneration and metal recovery from spent acidic wastewater by a diffusion dialysis plate-and-frame module using Quaternized Polyepichlorohydrin - Polyacrylonitrile (QPECH-PAN) membranes. Quaternized Polyepichlorohydrin (QPECH) membranes were synthesized using 1,4-diazobicyclo[2.2.2]octane (DABCO) and blended with polyacrylonitrile (PAN). Said membranes were analyzed in terms of their mechanical, physicochemical, and electrochemical characteristics, providing significant results comparable to the commercial membranes (IEC: 1.76 mmol/g, SD: 60.91%, Permselectivity: 79.5 ± 0.31%, and transport no. t(-): 0.5). Mechanical characterization reveals that the QPECH-PAN membranes possess comparable mechanical strengths (tensile strength: 329.56 MPa). Further, sheet resistivity (6.11 Ω cm2) and conductivity (0.16 S/cm2) reveal the relative conductive nature of these membranes. Percent acid recovery and metal ion recovery ratios were found to be 72% and 48% respectively, and separation factors were 126.8 and 84.57 respectively. The QPECH-PAN membrane's techno-economic feasibility was also analyzed within the context of a textile industry processing up to 5500 kg/d of acidic wastewater. It indicates a potential cost saving of US $0.53 million on H2SO4 and NaOH, as well as an OPEX saving of 40.91% against a semi-continuous acid neutralizer.
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Affiliation(s)
- Shazia Perveen
- Department of Chemistry, NED University of Engineering & Technology, University Road, Karachi 75270, Sindh, Pakistan
| | - Syed Ghazanfar Hussain
- Department of Chemistry, NED University of Engineering & Technology, University Road, Karachi 75270, Sindh, Pakistan
| | - Muzamil Jalil Ahmed
- Department of Chemistry, NED University of Engineering & Technology, University Road, Karachi 75270, Sindh, Pakistan
| | - Ruba Khawar
- Department of Chemistry, NED University of Engineering & Technology, University Road, Karachi 75270, Sindh, Pakistan
| | - Taha Bin Siraj
- Department of Chemistry, NED University of Engineering & Technology, University Road, Karachi 75270, Sindh, Pakistan
| | - Maryam Saleem
- Department of Chemistry, NED University of Engineering & Technology, University Road, Karachi 75270, Sindh, Pakistan
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18
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Gudkov SV, Astashev ME, Baymler IV, Bolotskova PN, Kozlov VA, Simakin AV, Khuong MT, Fomina PA, Bunkin NF. Effects of Low-Frequency Randomly Polarized Electromagnetic Radiation, as Revealed upon Swelling of Polymer Membrane in Water with Different Isotopic Compositions. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4622. [PMID: 37444935 DOI: 10.3390/ma16134622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/22/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023]
Abstract
Photoluminescence from the surface of Nafion polymer membrane upon swelling in water under irradiation by electromagnetic waves at a frequency of 100 MHz was studied. In these experiments, natural deionized (DI) water with a deuterium content of 157 ppm and deuterium-depleted water (DDW, deuterium content is 1 ppm) were explored. We have studied for the first time the effect of linearly and randomly polarized low-frequency electromagnetic radiation on the luminescence excitation. To obtain low-frequency electromagnetic radiation with random polarizations, anisotropic solid submicron-sized particles, which result in depolarization effects upon scattering of the initially linearly polarized radiation, were used. We compared two types of colloidal particles: spherically symmetric (isotropic) and elongated (anisotropic). If the radiation is linearly polarized, the intensity of luminescence from the Nafion surface decreases exponentially as the polymer is soaked, and such a behavior is observed both in natural DI water and DDW. When spherically symmetric submicron-sized particles are added to a liquid sample, the luminescence intensity also decreases exponentially upon swelling in both natural DI water and DDW. At the same time, when anisotropic submicron-sized particles are added to DI water, random jumps in the luminescence intensity appear during swelling. At the same time, the exponential decrease in the luminescence intensity is retained upon swelling in DDW. A qualitative theoretical model for the occurrence of random jumps in the luminescence intensity is presented.
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Affiliation(s)
- Sergey V Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St., 119991 Moscow, Russia
| | - Maxim E Astashev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St., 119991 Moscow, Russia
| | - Ilya V Baymler
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St., 119991 Moscow, Russia
| | - Polina N Bolotskova
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, 105005 Moscow, Russia
| | - Valery A Kozlov
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, 105005 Moscow, Russia
| | - Alexander V Simakin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St., 119991 Moscow, Russia
| | - Minh T Khuong
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, 105005 Moscow, Russia
| | - Polina A Fomina
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, 105005 Moscow, Russia
| | - Nikolai F Bunkin
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, 105005 Moscow, Russia
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19
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Sreenath S, Sreelatha NP, Pawar CM, Dave V, Bhatt B, Borle NG, Nagarale RK. Proton Conducting Organic-Inorganic Composite Membranes for All-Vanadium Redox Flow Battery. MEMBRANES 2023; 13:574. [PMID: 37367778 DOI: 10.3390/membranes13060574] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/22/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023]
Abstract
The quest for a cost-effective, chemically-inert, robust and proton conducting membrane for flow batteries is at its paramount. Perfluorinated membranes suffer severe electrolyte diffusion, whereas conductivity and dimensional stability in engineered thermoplastics depend on the degree of functionalization. Herein, we report surface-modified thermally crosslinked polyvinyl alcohol-silica (PVA-SiO2) membranes for the vanadium redox flow battery (VRFB). Hygroscopic, proton-storing metal oxides such as SiO2, ZrO2 and SnO2 were coated on the membranes via the acid-catalyzed sol-gel strategy. The membranes of PVA-SiO2-Si, PVA-SiO2-Zr and PVA-SiO2-Sn demonstrated excellent oxidative stability in 2 M H2SO4 containing 1.5 M VO2+ ions. The metal oxide layer had good influence on conductivity and zeta potential values. The observed trend for conductivity and zeta potential values was PVA-SiO2-Sn > PVA-SiO2-Si > PVA-SiO2-Zr. In VRFB, the membranes showcased higher Coulombic efficiency than Nafion-117 and stable energy efficiencies over 200 cycles at the 100 mA cm-2 current density. The order of average capacity decay per cycle was PVA-SiO2-Zr < PVA-SiO2-Sn < PVA-SiO2-Si < Nafion-117. PVA-SiO2-Sn had the highest power density of 260 mW cm-2, while the self-discharge for PVA-SiO2-Zr was ~3 times higher than Nafion-117. VRFB performance reflects the potential of the facile surface modification technique to design advanced membranes for energy device applications.
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Affiliation(s)
- Sooraj Sreenath
- Electro Membrane Processes Laboratory, Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nayanthara P Sreelatha
- Electro Membrane Processes Laboratory, Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Chetan M Pawar
- Electro Membrane Processes Laboratory, Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vidhiben Dave
- Electro Membrane Processes Laboratory, Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Bhavana Bhatt
- Electro Membrane Processes Laboratory, Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Nitin G Borle
- Electro Membrane Processes Laboratory, Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Rajaram Krishna Nagarale
- Electro Membrane Processes Laboratory, Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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20
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Wu S, Zhu H, Wu Y, Li S, Zhang G, Miao Z. Resourceful Treatment of Battery Recycling Wastewater Containing H 2SO 4 and NiSO 4 by Diffusion Dialysis and Electrodialysis. MEMBRANES 2023; 13:570. [PMID: 37367774 DOI: 10.3390/membranes13060570] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/22/2023] [Accepted: 05/29/2023] [Indexed: 06/28/2023]
Abstract
Facing the increasing demand for batteries worldwide, recycling waste lithium batteries has become one of the important ways to address the problem. However, this process generates a large amount of wastewater which contains high concentration of heavy metals and acids. Deploying lithium battery recycling would cause severe environmental hazards, would pose risks to human health, and would also be a waste of resources. In this paper, a combined process of diffusion dialysis (DD) and electrodialysis (ED) is proposed to separate, recover, and utilize Ni2+ and H2SO4 in the wastewater. In the DD process, the acid recovery rate and Ni2+ rejection rate could reach 75.96% and 97.31%, respectively, with a flow rate of 300 L/h and a W/A flow rate ratio of 1:1. In the ED process, the recovered acid from DD is concentrated from 43.1 g/L to 150.2 g/L H2SO4 by the two-stage ED, which could be used in the front-end procedure of battery recycling process. In conclusion, a promising method for the treatment of battery wastewater which achieved the recycling and utilization of Ni2+ and H2SO4 was proposed and proved to have industrial application prospects.
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Affiliation(s)
- Sifan Wu
- Hangzhou Water Treatment Technology Development Center Co., Ltd., Hangzhou 310012, China
- Zhejiang Key Laboratory of Seawater Desalination Technology, Hangzhou 310012, China
| | - Haitao Zhu
- Hangzhou Water Treatment Technology Development Center Co., Ltd., Hangzhou 310012, China
- Zhejiang Key Laboratory of Seawater Desalination Technology, Hangzhou 310012, China
- Bluestar (Hangzhou) Membrane Industries Co., Ltd., Hangzhou 311103, China
| | - Yaqin Wu
- Hangzhou Water Treatment Technology Development Center Co., Ltd., Hangzhou 310012, China
- Zhejiang Key Laboratory of Seawater Desalination Technology, Hangzhou 310012, China
| | - Shuna Li
- Hangzhou Water Treatment Technology Development Center Co., Ltd., Hangzhou 310012, China
- Zhejiang Key Laboratory of Seawater Desalination Technology, Hangzhou 310012, China
| | - Gaoqi Zhang
- Hangzhou Water Treatment Technology Development Center Co., Ltd., Hangzhou 310012, China
- Zhejiang Key Laboratory of Seawater Desalination Technology, Hangzhou 310012, China
| | - Zhiwei Miao
- Hangzhou Water Treatment Technology Development Center Co., Ltd., Hangzhou 310012, China
- Zhejiang Key Laboratory of Seawater Desalination Technology, Hangzhou 310012, China
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21
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Li R, Wang H, Yan J, Fu R, Wang B, Jiang C, Wang Y, Xu T. A cascade electro-dehydration process for simultaneous extraction and enrichment of uranium from simulated seawater. WATER RESEARCH 2023; 240:120079. [PMID: 37224666 DOI: 10.1016/j.watres.2023.120079] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 05/10/2023] [Accepted: 05/13/2023] [Indexed: 05/26/2023]
Abstract
Uranium extraction from seawater has become a crucial issue that has raised tremendous attention. The transport of water molecules along with salt ions through an ion-exchange membrane is a common phenomenon for typical electro-membrane processes such as selective electrodialysis (SED). In this study, a cascade electro-dehydration process was proposed for the simultaneous extraction and enrichment of uranium from simulated seawater by taking advantage of water transport through ion-exchange membranes and the high permselectivity of membranes for monovalent ions against uranate ions. The results indicated that the electro-dehydration effect in SED allowed 1.8 times the concentration of uranium with a loose structure CJMC-5 cation-exchange membrane at a current density of 4 mA/cm2. Thereafter, a cascade electro-dehydration by a combination of SED with conventional electrodialysis (CED) enabled approximately 7.5 times uranium concentration with the extraction yield rate reaching over 80% and simultaneously desalting the majority of salts. Overall, a cascade electro-dehydration is a viable approach, creating a novel route for highly effective uranium extraction and enrichment from seawater.
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Affiliation(s)
- Ruirui Li
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Huangying Wang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Junying Yan
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Rong Fu
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Baoying Wang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Chenxiao Jiang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Yaoming Wang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
| | - Tongwen Xu
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
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22
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Ninham BW, Battye MJ, Bolotskova PN, Gerasimov RY, Kozlov VA, Bunkin NF. Nafion: New and Old Insights into Structure and Function. Polymers (Basel) 2023; 15:2214. [PMID: 37177360 PMCID: PMC10181149 DOI: 10.3390/polym15092214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/28/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023] Open
Abstract
The work reports a number of results on the dynamics of swelling and inferred nanostructure of the ion-exchange polymer membrane Nafion in different aqueous solutions. The techniques used were photoluminescent and Fourier transform IR (FTIR) spectroscopy. The centers of photoluminescence were identified as the sulfonic groups localized at the ends of the perfluorovinyl ether (Teflon) groups that form the backbone of Nafion. Changes in deuterium content of water induced unexpected results revealed in the process of polymer swelling. In these experiments, deionized (DI) water (deuterium content 157 ppm) and deuterium depleted water (DDW) with deuterium content 3 PPM, were investigated. The strong hydration of sulfonic groups involves a competition between ortho- and para-magnetic forms of a water molecule. Deuterium, as it seems, adsorbs competitively on the sulfonic groups and thus can change the geometry of the sulfate bonds. With photoluminescent spectroscopy experiments, this is reflected in the unwinding of the polymer fibers into the bulk of the adjoining water on swelling. The unwound fibers do not tear off from the polymer substrate. They form a vastly extended "brush" type structure normal to the membrane surface. This may have implications for specificity of ion transport in biology, where the ubiquitous glycocalyx of cells and tissues invariably involves highly sulfated polymers such asheparan and chondroitin sulfate.
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Affiliation(s)
- Barry W. Ninham
- Department of Materials Physics, Research School of Physics, Australian National University, Canberra, ACT 2600, Australia
| | | | - Polina N. Bolotskova
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, Moscow 105005, Russia
| | - Rostislav Yu. Gerasimov
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, Moscow 105005, Russia
| | - Valery A. Kozlov
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, Moscow 105005, Russia
| | - Nikolai F. Bunkin
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, Moscow 105005, Russia
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23
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Krishna B A, de Vos WM, Lindhoud S. Control over Charge Density by Tuning the Polyelectrolyte Type and Monomer Ratio in Saloplastic-Based Ion-Exchange Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:6874-6884. [PMID: 37126784 DOI: 10.1021/acs.langmuir.3c00497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Membranes based on polyelectrolyte complexes (PECs) can now be prepared through several sustainable, organic solvent-free approaches. A recently developed approach allows PECs made by stoichiometric mixing of polyelectrolytes to be hot-pressed into dense saloplastics, which then function as ion-exchange membranes. An important advantage of PECs is that tuning their properties can provide significant control over the properties of the fabricated materials, and thus over their separation properties. This work studies the effects of two key parameters─(a) ratio of mixing and (b) choice of polyelectrolytes─on the mechanical, material, and separation properties of their corresponding hot-pressed saloplastic-based ion-exchange membranes. By varying these two main parameters, charge density─the key property of any IEM─was found to be controllable. While studying several systems, including strong/strong, strong/weak, and weak/weak combinations of polyelectrolytes, it was observed that not all systems could be processed into saloplastic membranes. For the processable systems, expected trends were observed where a higher excess of one polyelectrolyte would lead to a more charged system, resulting in higher water uptake and better permselectivities. An anomaly was the polystyrenesulfonate-polyvinylamine system, which showed an opposite trend with a higher polycation ratio, leading to a more negative charge. Overall, we have found that it is possible to successfully fabricate saloplastic-based anion- and cation-exchange membranes with tunable charge densities through careful choice of polyelectrolyte combination and ratio of mixing.
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Affiliation(s)
- Ameya Krishna B
- Membrane Surface Science, Membrane Science and Technology, MESA+ Institute of Nanotechnology, University of Twente, Enschede, Overijssel 7500 AE, The Netherlands
- Department of Molecules and Materials, University of Twente, Enschede, Overijssel 7500 AE, The Netherlands
| | - Wiebe M de Vos
- Membrane Surface Science, Membrane Science and Technology, MESA+ Institute of Nanotechnology, University of Twente, Enschede, Overijssel 7500 AE, The Netherlands
| | - Saskia Lindhoud
- Department of Molecules and Materials, University of Twente, Enschede, Overijssel 7500 AE, The Netherlands
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24
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Ahmad M, Ahmed M. Characterization and applications of ion-exchange membranes and selective ion transport through them: a review. J APPL ELECTROCHEM 2023. [DOI: 10.1007/s10800-023-01882-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
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25
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Kim Y, Cho H, Choi Y, Koo J, Lee S. Optimization and Evaluation for the Capacitive Deionization Process of Wastewater Reuse in Combined Cycle Power Plants. MEMBRANES 2023; 13:316. [PMID: 36984703 PMCID: PMC10051048 DOI: 10.3390/membranes13030316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/26/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Combined cycle power plants (CCPPs) use large amounts of water withdrawn from nearby rivers and generate wastewater containing ions and pollutants. Despite the need for wastewater reclamation, few technologies can successfully convert the wastewater into make-up water for CCPPs. Therefore, this study aimed to apply capacitive deionization (CDI) for wastewater reclamation in CCPPs. Using a bench-scale experimental unit, which included ion exchange membranes and carbon electrodes, response surface methodology (RSM) was used to optimize the operating conditions of the CDI process to increase the total dissolved solids (TDS) removal and product water ratio. The optimal conditions were found to be a voltage of 1.5 V, a flow rate of 15 mL/min, and an adsorption/desorption ratio of 1:0.8. The changes in CDI performance with time were also studied, and the foulants on the membranes, spacers, and electrodes were examined to understand the fouling mechanism. The TDS removal decreased from 93.65% to 55.70% after 10 days of operation due to the deposition of scale and organic matter. After chemical cleaning, the TDS removal rate recovered to 93.02%, which is close to the initial condition.
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Affiliation(s)
- Yesol Kim
- School of Civil and Environmental Engineering, Kookimin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, Republic of Korea
| | - Hyeongrak Cho
- School of Civil and Environmental Engineering, Kookimin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, Republic of Korea
| | - Yongjun Choi
- School of Civil and Environmental Engineering, Kookimin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, Republic of Korea
| | - Jaewuk Koo
- Korea Institute of Civil Engineering and Building Technology, 283 Goyang-daero, Ilsanseo-gu, Goyang-si 10223, Republic of Korea
| | - Sangho Lee
- School of Civil and Environmental Engineering, Kookimin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, Republic of Korea
- Desalination Technologies Research Institute (DTRI), Saline Water Conversion Corporation (SWCC), P.O. Box WQ36+XJP, Al Jubayl 35417, Saudi Arabia
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26
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Efficiency of Neat and Quaternized-Cellulose Nanofibril Fillers in Chitosan Membranes for Direct Ethanol Fuel Cells. Polymers (Basel) 2023; 15:polym15051146. [PMID: 36904390 PMCID: PMC10007147 DOI: 10.3390/polym15051146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/06/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
In this work, fully polysaccharide based membranes were presented as self-standing, solid polyelectrolytes for application in anion exchange membrane fuel cells (AEMFCs). For this purpose, cellulose nanofibrils (CNFs) were modified successfully with an organosilane reagent, resulting in quaternized CNFs (CNF (D)), as shown by Fourier Transform Infrared Spectroscopy (FTIR), Carbon-13 (C13) nuclear magnetic resonance (13C NMR), Thermogravimetric Analysis (TGA)/Differential Scanning Calorimetry (DSC), and ζ-potential measurements. Both the neat (CNF) and CNF(D) particles were incorporated in situ into the chitosan (CS) membrane during the solvent casting process, resulting in composite membranes that were studied extensively for morphology, potassium hydroxide (KOH) uptake and swelling ratio, ethanol (EtOH) permeability, mechanical properties, ionic conductivity, and cell performance. The results showed higher Young's modulus (119%), tensile strength (91%), ion exchange capacity (177%), and ionic conductivity (33%) of the CS-based membranes compared to the commercial Fumatech membrane. The addition of CNF filler improved the thermal stability of the CS membranes and reduced the overall mass loss. The CNF (D) filler provided the lowest (4.23 × 10-5 cm2 s-1) EtOH permeability of the respective membrane, which is in the same range as that of the commercial membrane (3.47 × 10-5 cm2s-1). The most significant improvement (~78%) in power density at 80 °C was observed for the CS membrane with neat CNF compared to the commercial Fumatech membrane (62.4 mW cm-2 vs. 35.1 mW cm-2). Fuel cell tests showed that all CS-based anion exchange membranes (AEMs) exhibited higher maximum power densities than the commercial AEMs at 25 °C and 60 °C with humidified or non-humidified oxygen, demonstrating their potential for low-temperature direct ethanol fuel cell (DEFC) applications.
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27
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Tangjaidee P, Swedlund P, Xiang J, Yin H, Quek SY. Selenium-enriched plant foods: Selenium accumulation, speciation, and health functionality. Front Nutr 2023; 9:962312. [PMID: 36815133 PMCID: PMC9939470 DOI: 10.3389/fnut.2022.962312] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 09/13/2022] [Indexed: 02/09/2023] Open
Abstract
Selenium (Se) is an essential element for maintaining human health. The biological effects and toxicity of Se compounds in humans are related to their chemical forms and consumption doses. In general, organic Se species, including selenoamino acids such as selenomethionine (SeMet), selenocystine (SeCys2), and Se-methylselenocysteine (MSC), could provide greater bioactivities with less toxicity compared to those inorganics including selenite (Se IV) and selenate (Se VI). Plants are vital sources of organic Se because they can accumulate inorganic Se or metabolites and store them as organic Se forms. Therefore, Se-enriched plants could be applied as human food to reduce deficiency problems and deliver health benefits. This review describes the recent studies on the enrichment of Se-containing plants in particular Se accumulation and speciation, their functional properties related to human health, and future perspectives for developing Se-enriched foods. Generally, Se's concentration and chemical forms in plants are determined by the accumulation ability of plant species. Brassica family and cereal grains have excessive accumulation capacity and store major organic Se compounds in their cells compared to other plants. The biological properties of Se-enriched plants, including antioxidant, anti-diabetes, and anticancer activities, have significantly presented in both in vitro cell culture models and in vivo animal assays. Comparatively, fewer human clinical trials are available. Scientific investigations on the functional health properties of Se-enriched edible plants in humans are essential to achieve in-depth information supporting the value of Se-enriched food to humans.
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Affiliation(s)
- Pipat Tangjaidee
- Food Science, School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Peter Swedlund
- Food Science, School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Jiqian Xiang
- Enshi Autonomous Prefecture Academy of Agriculture Sciences, Enshi, Hubei, China
| | - Hongqing Yin
- Enshi Autonomous Prefecture Academy of Agriculture Sciences, Enshi, Hubei, China
| | - Siew Young Quek
- Food Science, School of Chemical Sciences, University of Auckland, Auckland, New Zealand,Riddet Institute New Zealand Centre of Research Excellence in Food, Palmerston North, New Zealand,*Correspondence: Siew Young Quek,
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28
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Chen C, Du S, Taylor JM, Huang J, Evans CM, Braun PV. Visualizing ion transport in polymers via ion-chromic indicators. ACS Macro Lett 2023; 12:86-92. [PMID: 36595317 DOI: 10.1021/acsmacrolett.2c00651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
There is growing interest in polymers with high ionic conductivity for applications including batteries, fuel cells, and separation membranes. However, measuring ion diffusion in polymers can be challenging, requiring complex procedures and instrumentation. Here, a simple strategy to study ion diffusion in polymers is presented that utilizes ion-chromic spiropyan as an indicator to measure the diffusion of LiTFSI, KTFSI, and NaTFSI within poly(ethylene oxide)-based polymer networks. These systems are selected, as these are common ions and polymers used in energy storage applications, however, the approach described is not specific to materials for energy storage. Specifically, to enabling the study of ion diffusion, these salts cause the spiropyran to undergo an isomerization reaction, which results in a significant color change. This colorimetric response enables the determination of the diffusion coefficients of these ions within films of these polymers simply by optically tracking the spatial-temporal evolution of the isomerization product within the film and fitting the data to the relevant diffusion equations. The simplicity of the method makes it amenable to the study of ion diffusion in polymers under a range of conditions, including various temperatures and under macroscopic deformation.
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Affiliation(s)
- Chen Chen
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States
| | - Sifei Du
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States
| | - Jay M Taylor
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States
| | - Junrou Huang
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States
| | - Christopher M Evans
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States
| | - Paul V Braun
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States.,Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois61801, United States
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29
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Fu R, Wang H, Yan J, Li R, Wang B, Jiang C, Wang Y, Xu T. A cost-effective and high-efficiency online ED-BMED integrated system enables the conversion of 3.5 wt% NaCl aqueous solution into 6.20 mol/L NaOH. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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30
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Khan MI, Shanableh A, Osman SM, Lashari MH, Manzoor S, Rehman AU, Luque R. Fabrication of trimethylphosphine-functionalized anion exchange membranes for desalination application via electrodialysis process. CHEMOSPHERE 2022; 308:136330. [PMID: 36087733 DOI: 10.1016/j.chemosphere.2022.136330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/22/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
The design of conductive, improved durable and selective anion exchange membranes (AEMs) for desalination application via electrodialysis (ED) process is critical for a more sustainable future. This work reports the design of a series of homogeneous trimethylphosphine (TMP)-functionalized anion exchange membranes (AEMs) for desalination application via electrodialysis (ED) process. Physico-chemical characterization and electrochemical performance of the trimethylphosphine-functionalized anion exchange membranes was conducted and the activity found to be tuned by varying the quantity of trimethylphosphine into the membrane architecture. For anion exchange membranes M1 to M4, the ion exchange capacity (IEC) was increased from 1.35 to 2.16 mmol/g, water uptake (WR) from 4.30 to 17.72%, linear expansion ratio (LER) from 3.70 to 12.50% with enhancing the quantity of trimethylphosphine into the polymer architecture. The ionic resistance decreased from 15.14 to 2.61 Ω cm2 with increasing quantities of trimethylphosphine whereas transport number increased from 0.98 to 0.99. The performance of synthesized trimethylphosphine-functionalized anion exchange membranes in desalination of NaCl was evaluated via electrodialysis process (flux of 3.42 mol/m2. h and current efficiency of 64.30%). Results showed that the prepared trimethylphosphine-functionalized membrane (optimum M4) possess improved desalination performance as compared to commercial membrane Neosepta AMX under identical experimental conditions.
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Affiliation(s)
- Muhammad Imran Khan
- Research Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah, 27272, United Arab Emirates.
| | - Abdallah Shanableh
- Research Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah, 27272, United Arab Emirates.
| | - Sameh M Osman
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | | | - Suryyia Manzoor
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, 60800, Pakistan.
| | - Aziz Ur Rehman
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Rafael Luque
- Departamento de Química Orgánica Universidad de Córdoba, Edificio Marie Curie (C 3), Campus de Rabanales, Ctra Nnal IV-A, Km 396, E14014, Córdoba, Spain; Peoples Friendship University of Russia (RUDN University), 6 Miklukho Maklaya Str., 117198, Moscow, Russian Federation
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31
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Samsudin AM, Roschger M, Wolf S, Hacker V. Preparation and Characterization of QPVA/PDDA Electrospun Nanofiber Anion Exchange Membranes for Alkaline Fuel Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3965. [PMID: 36432251 PMCID: PMC9693389 DOI: 10.3390/nano12223965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/04/2022] [Accepted: 11/06/2022] [Indexed: 06/16/2023]
Abstract
In recent years, there has been considerable interest in anion exchange membrane fuel cells (AEMFCs) as part of fuel cell technology. Anion exchange membranes (AEMs) provide a significant contribution to the development of fuel cells, particularly in terms of performance and efficiency. Polymer composite membranes composed of quaternary ammonium poly(vinyl alcohol) (QPVA) as electrospun nanofiber mats and a combination of QPVA and poly(diallyldimethylammonium chloride) (PDDA) as interfiber voids matrix filler were prepared and characterized. The influence of various QPVA/PDDA mass ratios as matrix fillers on anion exchange membranes and alkaline fuel cells was evaluated. The structural, morphological, mechanical, and thermal properties of AEMs were characterized. To evaluate the AEMs' performances, several measurements comprise swelling properties, ion exchange capacity (IEC), hydroxide conductivity (σ), alkaline stability, and single-cell test in fuel cells. The eQP-PDD0.5 acquired the highest hydroxide conductivity of 43.67 ms cm-1 at 80 °C. The tensile strength of the membranes rose with the incorporation of the filler matrix, with TS ranging from 23.18 to 24.95 Mpa. The peak power density and current density of 24 mW cm-2 and 131 mA cm-2 were achieved with single cells comprising eQP-PDD0.5 membrane at 57 °C.
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Affiliation(s)
- Asep Muhamad Samsudin
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, 8020 Graz, Austria
- Department of Chemical Engineering, Diponegoro University, Semarang 50275, Indonesia
| | - Michaela Roschger
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, 8020 Graz, Austria
| | - Sigrid Wolf
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, 8020 Graz, Austria
| | - Viktor Hacker
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, 8020 Graz, Austria
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32
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Miwornunyuie N, Jingyu H, Chen L, Ke L, Koomson DA, Ewusi-Mensah D, Opoku PA. Application of ZIF-8 nanocomposite membrane in microbial desalination cells for simultaneous heavy metal removal and biofouling prevention. CHEMOSPHERE 2022; 306:135386. [PMID: 35724722 DOI: 10.1016/j.chemosphere.2022.135386] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
Microbial desalination cells (MDC) syndicate the advantage of physical separation by using membranes to create conditions required for Bioelectrochemical processes for the treatment of various domestic and industrial wastewater, while simultaneously desalinating saline water and generating bioenergy. However, since the introduction of this technology, heavy metal removal has been a challenge, and membrane fouling has become a major bottleneck limiting the optimum performance and efficiency of this technology. This study incorporated the use of ZIF-8 nanocomposite membrane via phase inversion mechanism in MDC for simultaneous heavy metal removal and membrane biofouling prevention. The study was conducted in two MDC systems; MDC-Control (without the ZIF-8 nanocomposite membrane) and MDC with ZIF-8 nanocomposite membrane. The results from the experiment shown that maximum removal efficiency of 85.7%, 84.3%, 84.0%, and 90.61% was obtained for Cu2+, Zn2+, Pb2+, and Cd2+ respectively in MDC-ZIF-8, while MDC control showed 54.17%, 59.71%, 51.94%, and 54.17%. The results were well fitted to the Langmuir adsorption isotherm with correlation coefficients (R2) > 0.99 in all cases for MDC-ZIF-8. A maximum adsorption capacity (Qmax) of 292 mg g-1 was attained for all four metal ions in MDC-ZIF-8. Besides, after 38 days of continuous operation with two complete desalination for both systems, the SEM-EDS characterization analysis, polarization characteristics, and power generation revealed antifouling characteristics of ZIF-8 nanocomposite membrane incorporated in MDC. The integration of the ZIF-8 nanocomposite membrane proved to be simultaneously efficient in biofouling prevention and heavy metal removal without jeopardizing the system's ability for wastewater treatment, bioelectricity generation, and desalination processes.
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Affiliation(s)
- Nicholas Miwornunyuie
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, No.1 Xikang Road, Nanjin, 210098, China; School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China.
| | - Huang Jingyu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, No.1 Xikang Road, Nanjin, 210098, China.
| | - Lei Chen
- Jilin Jianzhu University, Key Laboratory of Song Liao Aquatic Environment, Changchun, 130118, Jilin, China
| | - Li Ke
- Jilin Jianzhu University, Key Laboratory of Song Liao Aquatic Environment, Changchun, 130118, Jilin, China
| | - Desmond Ato Koomson
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, No.1 Xikang Road, Nanjin, 210098, China
| | - David Ewusi-Mensah
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, No.1 Xikang Road, Nanjin, 210098, China
| | - Prince Atta Opoku
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, No.1 Xikang Road, Nanjin, 210098, China
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Huang Y, Fan H, Yip NY. Influence of electrolyte on concentration-induced conductivity-permselectivity tradeoff of ion-exchange membranes. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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34
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Lee J, Shin Y, Boo C, Hong S. Performance, limitation, and opportunities of acid-resistant nanofiltration membranes for industrial wastewater treatment. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Butylskii DY, Troitskiy VA, Ponomar MA, Moroz IA, Sabbatovskiy KG, Sharafan MV. Efficient Anion-Exchange Membranes with Anti-Scaling Properties Obtained by Surface Modification of Commercial Membranes Using a Polyquaternium-22. MEMBRANES 2022; 12:1065. [PMID: 36363620 PMCID: PMC9693783 DOI: 10.3390/membranes12111065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/12/2022] [Accepted: 10/26/2022] [Indexed: 05/12/2023]
Abstract
Anion-exchange membranes modified with a polyquaternium-22 (PQ-22) polymer were studied for their use in electrodialysis. The use of PQ-22 for modification makes it possible to "replace" weakly basic amino groups on the membrane surface with quaternary amino groups. It was found that the content of quaternary amino groups in PQ-22 is higher than the content of carboxyl groups, which is the reason for the effectiveness of this polymer even when modifying Ralex AHM-PES membranes that initially contain only quaternary amino groups. In the case of membranes containing weakly basic amino groups, the PQ-22 polymer modification efficiency is even higher. The surface charge of the modified MA-41P membrane increased, while the limiting current density on the current-voltage curves increased by more than 1.5 times and the plateau length decreased by 2.5 times. These and other characteristics indicate that the rate of water splitting decreased and the electroconvective mixing at the membrane surface intensified, which was confirmed by direct visualization of vortex structures. Increasing the surface charge of the commercial MA-41P anion-exchange membrane, reducing the rate of water splitting, and enhancing electroconvection leads to mitigated scaling on its surface during electrodialysis.
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Affiliation(s)
- Dmitrii Y. Butylskii
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
| | - Vasiliy A. Troitskiy
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
| | - Maria A. Ponomar
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
| | - Ilya A. Moroz
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
| | - Konstantin G. Sabbatovskiy
- Frumkin Intstitute of Physical Chemistry and Electrochemistry RAS, 31 Leninsky Prospekt, 119071 Moscow, Russia
| | - Mikhail V. Sharafan
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
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36
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Khalid NA, Shoparwe NF, Yusoff AH, Sulaiman AZ, Ahmad AL, Azmi NA. Fabrication and Characterisation of MWCNT/Polyvinyl (PVC) Polymer Inclusion Membrane for Zinc (II) Ion Removal from Aqueous Solution. MEMBRANES 2022; 12:1020. [PMID: 36295779 PMCID: PMC9607245 DOI: 10.3390/membranes12101020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/10/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Heavy metal pollution has prompted researchers to establish the most effective method to tackle the impacts of heavy metals on living things and the environment, which include by applying nanoparticles. An example is the employment of multi-walled carbon nanotubes (MWCNTs) as an additive in an intermediate membrane or polymer inclusion membrane (PIM). The MWCNTs were added to enhance the properties and reinforce the transport performance of zinc (II) ion (Zn2+) removal from the source phase to the receiver phase by the PIMs. The present study constructed a membrane with a poly(vinyl chloride) (PVC)-based polymer, dioctyl phthalate (DOP) plasticiser, and bis-(2-ethylhexyl) phosphate (B2EHP) carrier incorporated with different concentrations of MWCNTs. The contact angle (CA), water uptake, ion exchange capacity (IEC), and porosity of the fabricated membranes were evaluated. The membrane was also characterised by employing scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and electrochemical impedance spectroscopy (EIS). Subsequently, the fabricated PIM (W1) and mixed matrix (MM)-PIM (W2−W5) samples were assessed under different parameters to acquire the ideal membrane composition and effectiveness. Kinetic modelling of Zn2+ removal by the fabricated PIMs under similar conditions was performed to reveal the mechanisms involved. The average removal efficiency of the membranes was >99% at different parameter conditions. Nevertheless, the W3 membrane with 1.0 wt% MWCNT immersed in a 5 mg/L initial Zn2+ concentration and 1.0 M receiver solution for seven hours at pH 2 demonstrated the highest percentage of Zn2+ removal. The experimental data were best fitted to the pseudo-first-order kinetic model (PFO) in kinetic modelling, and the permeability and flux of the W3 at optimum conditions were 0.053 m s−1 and 0.0532 mol m−2 s−1, respectively. In conclusion, the transport mechanism of Zn2+ was enhanced with the addition of the MWCNTs.
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Affiliation(s)
- Nadia Aqilah Khalid
- Gold Rare Earth and Material Technopreneurship Centre, Faculty of Bioengineering and Technology, Jeli Campus, Universiti Malaysia Kelantan, Jeli, Kota Bharu 17600, Kelantan, Malaysia
| | - Noor Fazliani Shoparwe
- Gold Rare Earth and Material Technopreneurship Centre, Faculty of Bioengineering and Technology, Jeli Campus, Universiti Malaysia Kelantan, Jeli, Kota Bharu 17600, Kelantan, Malaysia
| | - Abdul Hafidz Yusoff
- Gold Rare Earth and Material Technopreneurship Centre, Faculty of Bioengineering and Technology, Jeli Campus, Universiti Malaysia Kelantan, Jeli, Kota Bharu 17600, Kelantan, Malaysia
| | - Ahmad Ziad Sulaiman
- Gold Rare Earth and Material Technopreneurship Centre, Faculty of Bioengineering and Technology, Jeli Campus, Universiti Malaysia Kelantan, Jeli, Kota Bharu 17600, Kelantan, Malaysia
| | - Abdul Latif Ahmad
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, Malaysia
| | - Nur Aina Azmi
- Benua Sunda Cari Gali Sdn Bhd. No 6, Medan Pusat Bandar 1, Seksyen 9, Bandar Baru, Bangi 43650, Selangor, Malaysia
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37
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Shkirskaya SA, Kononenko NA, Timofeev SV. Structural and Electrotransport Properties of Perfluorinated Sulfocationic Membranes Modified by Silica and Zirconium Hydrophosphate. MEMBRANES 2022; 12:979. [PMID: 36295738 PMCID: PMC9610900 DOI: 10.3390/membranes12100979] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 09/30/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
A correlation between changes in structural and electrotransport properties of membranes after modification by silica and zirconium hydrophosphate was established. The total water volume, volume fraction of the free water in the membrane and the volume fraction of the water having high binding energy were considered as structural characteristics, which were found from the curves of water distribution on the water binding energy and the effective pore radii. The conductivity, diffusion and electroosmotic permeabilities were investigated as electrotransport properties. The influence of the modifier type on the current flow paths in the membrane was analyzed within the framework of the extended three-wire model. It has been established that the treatment of membranes with alcohol before the intercalation of a modifier leads to the appearance of cavities with an effective size of more than 100 nm filled with free water with the binding energy less than 10 J/mol. It is accompanied with an increase in the diffusion permeability of hybrid membranes by approximately 3-6 times in NaCl and HCl solutions, which limits the application of such materials in proton exchange membrane fuel cells. The different conditions of modification of perfluorinated membranes with similar properties by the dopant with same type allow for the preparation of the hybrid materials for various applications such as electrodialysis concentration or electric current generation devices.
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Affiliation(s)
- Svetlana A. Shkirskaya
- Physical Chemistry Department, Kuban State University, 149 Stavropolskaya Str., 350040 Krasnodar, Russia
| | - Natalia A. Kononenko
- Physical Chemistry Department, Kuban State University, 149 Stavropolskaya Str., 350040 Krasnodar, Russia
| | - Sergej V. Timofeev
- JSC Plastpolymer, 32 Polyustrovskiy prospect, 195197 St. Petersburg, Russia
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38
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Transport mechanisms in electrodialysis: The effect on selective ion transport in multi-ionic solutions. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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39
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Samsudin AM, Bodner M, Hacker V. A Brief Review of Poly(Vinyl Alcohol)-Based Anion Exchange Membranes for Alkaline Fuel Cells. Polymers (Basel) 2022; 14:polym14173565. [PMID: 36080640 PMCID: PMC9460312 DOI: 10.3390/polym14173565] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 01/20/2023] Open
Abstract
Anion exchange membrane fuel cells have unique advantages and are thus gaining increasing attention. Poly(vinyl alcohol) (PVA) is one of the potential polymers for the development of anion exchange membranes. This review provides recent studies on PVA-based membranes as alternative anion exchange membranes for alkaline fuel cells. The development of anion exchange membranes in general, including the types, materials, and preparation of anion exchange membranes in the last years, are discussed. The performances and characteristics of recently reported PVA-based membranes are highlighted, including hydroxide conductivity, water uptake, swelling degree, tensile strength, and fuel permeabilities. Finally, some challenging issues and perspectives for the future study of anion exchange membranes are discussed.
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Affiliation(s)
- Asep Muhamad Samsudin
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, 8010 Graz, Austria
- Department of Chemical Engineering, Diponegoro University, Semarang 50275, Indonesia
- Correspondence:
| | - Merit Bodner
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, 8010 Graz, Austria
| | - Viktor Hacker
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, 8010 Graz, Austria
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40
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Alkhadra M, Su X, Suss ME, Tian H, Guyes EN, Shocron AN, Conforti KM, de Souza JP, Kim N, Tedesco M, Khoiruddin K, Wenten IG, Santiago JG, Hatton TA, Bazant MZ. Electrochemical Methods for Water Purification, Ion Separations, and Energy Conversion. Chem Rev 2022; 122:13547-13635. [PMID: 35904408 PMCID: PMC9413246 DOI: 10.1021/acs.chemrev.1c00396] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Indexed: 02/05/2023]
Abstract
Agricultural development, extensive industrialization, and rapid growth of the global population have inadvertently been accompanied by environmental pollution. Water pollution is exacerbated by the decreasing ability of traditional treatment methods to comply with tightening environmental standards. This review provides a comprehensive description of the principles and applications of electrochemical methods for water purification, ion separations, and energy conversion. Electrochemical methods have attractive features such as compact size, chemical selectivity, broad applicability, and reduced generation of secondary waste. Perhaps the greatest advantage of electrochemical methods, however, is that they remove contaminants directly from the water, while other technologies extract the water from the contaminants, which enables efficient removal of trace pollutants. The review begins with an overview of conventional electrochemical methods, which drive chemical or physical transformations via Faradaic reactions at electrodes, and proceeds to a detailed examination of the two primary mechanisms by which contaminants are separated in nondestructive electrochemical processes, namely electrokinetics and electrosorption. In these sections, special attention is given to emerging methods, such as shock electrodialysis and Faradaic electrosorption. Given the importance of generating clean, renewable energy, which may sometimes be combined with water purification, the review also discusses inverse methods of electrochemical energy conversion based on reverse electrosorption, electrowetting, and electrokinetic phenomena. The review concludes with a discussion of technology comparisons, remaining challenges, and potential innovations for the field such as process intensification and technoeconomic optimization.
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Affiliation(s)
- Mohammad
A. Alkhadra
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Xiao Su
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Matthew E. Suss
- Faculty
of Mechanical Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel
- Wolfson
Department of Chemical Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel
- Nancy
and Stephen Grand Technion Energy Program, Technion—Israel Institute of Technology, Haifa 3200003, Israel
| | - Huanhuan Tian
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Eric N. Guyes
- Faculty
of Mechanical Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel
| | - Amit N. Shocron
- Faculty
of Mechanical Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel
| | - Kameron M. Conforti
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - J. Pedro de Souza
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Nayeong Kim
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Michele Tedesco
- European
Centre of Excellence for Sustainable Water Technology, Wetsus, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
| | - Khoiruddin Khoiruddin
- Department
of Chemical Engineering, Institut Teknologi
Bandung, Jl. Ganesha no. 10, Bandung, 40132, Indonesia
- Research
Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha no. 10, Bandung 40132, Indonesia
| | - I Gede Wenten
- Department
of Chemical Engineering, Institut Teknologi
Bandung, Jl. Ganesha no. 10, Bandung, 40132, Indonesia
- Research
Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha no. 10, Bandung 40132, Indonesia
| | - Juan G. Santiago
- Department
of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
| | - T. Alan Hatton
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Martin Z. Bazant
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
- Department
of Mathematics, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
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41
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Luo Y, Liu Y, Shen J, Van der Bruggen B. Application of Bipolar Membrane Electrodialysis in Environmental Protection and Resource Recovery: A Review. MEMBRANES 2022; 12:829. [PMID: 36135848 PMCID: PMC9504215 DOI: 10.3390/membranes12090829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/14/2022] [Accepted: 08/20/2022] [Indexed: 06/16/2023]
Abstract
Bipolar membrane electrodialysis (BMED) is a new membrane separation technology composed of electrodialysis (ED) through a bipolar membrane (BPM). Under the action of an electric field, H2O can be dissociated to H+ and OH-, and the anions and cations in the solution can be recovered as acids and bases, respectively, without adding chemical reagents, which reduces the application cost and carbon footprint, and leads to simple operation and high efficiency. Its application is becoming more widespread and promising, and it has become a research hotspot. This review mainly introduces the application of BMED to recovering salts in the form of acids and bases, CO2 capture, ammonia nitrogen recovery, and ion removal and recovery from wastewater. Finally, BMED is summarized, and future prospects are discussed.
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Affiliation(s)
- Yu Luo
- College of Environmental and Resource Sciences, College of Carbon Neutral Modern Industry, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou 350007, China
| | - Yaoxing Liu
- College of Environmental and Resource Sciences, College of Carbon Neutral Modern Industry, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou 350007, China
- Department of Chemical Engineering, ProcESS-Process Engineering for Sustainable System, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Jiangnan Shen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Bart Van der Bruggen
- Department of Chemical Engineering, ProcESS-Process Engineering for Sustainable System, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
- Faculty of Engineering and the Built Environment, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa
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42
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Mudau F, Motsa M, Hassard F, de Kock LA. Resin-Loaded Heterogeneous Polyether Sulfone Ion Exchange Membranes for Saline Groundwater Treatment. MEMBRANES 2022; 12:736. [PMID: 36005651 PMCID: PMC9416794 DOI: 10.3390/membranes12080736] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/26/2022] [Accepted: 07/04/2022] [Indexed: 12/10/2022]
Abstract
Arid areas often contain brackish groundwater that has a salinity exceeding 500 mg/L. This poses several challenges to the users of the water such as a salty taste and damage to household appliances. Desalination can be one of the key solutions to significantly lower the salinity and solute content of the water. However, the technology requires high energy inputs as well as managing waste products. This paper presents the fabrication of ultrafiltration heterogeneous ion exchange membranes for brackish groundwater treatment. Scanning electron microscopy (SEM) images showed a relatively uniform resin particle distribution within the polymer matrix. The mean roughness of the cation exchange membrane (CEM) and anion exchange membrane (AEM) surfaces increased from 42.12 to 317.25 and 68.56 to 295.95 nm, respectively, when resin loading was increased from 1 to 3.5 wt %. Contact angle measures suggested a more hydrophilic surface (86.13 to 76.26° and 88.10 to 74.47° for CEM and AEM, respectively) was achieved with greater resin loading rates. The ion exchange capacity (IEC) of the prepared membranes was assessed using synthetic groundwater in a dead-end filtration system and removal efficiency of K+, Mg2+, and Ca2+ were 56.0, 93.5, and 85.4%, respectively, for CEM with the highest resin loading. Additionally, the anion, NO3- and SO42- removal efficiency was 84.2% and 52.4%, respectively, for the AEM with the highest resin loading. This work demonstrates that the prepared ultrafiltration heterogeneous ion exchange membranes have potential for selective removal for of ions by ion exchange, under filtration conditions at low pressure of 0.05 MPa.
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Affiliation(s)
- Fulufhelo Mudau
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (F.M.); (M.M.)
| | - Machawe Motsa
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (F.M.); (M.M.)
| | - Francis Hassard
- Cranfield Water Science Institute, Cranfield University, College Way, Bedford MK43 0AL, UK;
| | - Lueta-Ann de Kock
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (F.M.); (M.M.)
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43
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Dong Y, Zhao Z, Zhao J, Guo Z, Du G, Sun Y, He D, Duan J, Liu J, Yao H. High-Performance Osmotic Power Generators Based on the 1D/2D Hybrid Nanochannel System. ACS APPLIED MATERIALS & INTERFACES 2022; 14:29197-29212. [PMID: 35704847 DOI: 10.1021/acsami.2c05247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Extracting clean energy by converting the salinity gradient between river and sea into energy is an effective way to reduce the global pollution and carbon emissions. Reverse electrodialysis (RED) is of great importance to realize the energy conversion assisting the ion-selective membrane. However, its higher ion resistance and lower conversion efficiency results in the undesirable power conversion performance. Here, we demonstrate a 1D/2D hybrid nanochannel system to achieve high osmotic energy conversion and output power. This heterogeneous structure is composed of two structures, in which the subnanometer nanochannels in graphene oxide membrane (GOM) can serve as a selective layer and reduce the ion diffusion energy barrier, while the nanochannel in the polymer can introduce asymmetry to enhance ionic rectification and conversion efficiency. This heterogeneous membrane exhibits excellent cation selectivity and enhanced ionic current rectification (ICR) performance. The application of the GOM/PET hybrid nanochannel system in osmotic energy harvesting is evaluated, and the output power can reach up to 118.2 pW with the energy conversion efficiency of 40.3%. Theoretical calculation indicates that the 1D/2D hybrid system can effectively take the advantage of excellent cation selectivity of 2D lamellar nanochannels to improve its RED performance significantly.
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Affiliation(s)
- Yuhua Dong
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Zhuo Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Jing Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Zaichao Guo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Guanghua Du
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Youmei Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Deyan He
- Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou730000, PR China
| | - Jinglai Duan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou516000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Jie Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Huijun Yao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou516000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
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44
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Han JH. Complete Suppression of Dispersed Inorganic Precipitates in Reverse Electrodialysis via Seawater Acidification. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ji-Hyung Han
- Jeju Global Research Centre, Korea Institute of Energy Research, 200 Haemajihaean-ro, Gujwa-eup, Jeju 63357, Republic of Korea
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Bunkin NF, Astashev ME, Bolotskova PN, Kozlov VA, Kravchenko AO, Nagaev EI, Okuneva MA. Possibility to Alter Dynamics of Luminescence from Surface of Polymer Membrane with Ultrasonic Waves. Polymers (Basel) 2022; 14:2542. [PMID: 35808587 PMCID: PMC9269195 DOI: 10.3390/polym14132542] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/17/2022] [Accepted: 06/17/2022] [Indexed: 02/04/2023] Open
Abstract
The temporal dynamics of luminescence from the surface of Nafion polymer membranes have been studied. In fact, the polymer membrane was soaked in liquids with different contents of deuterium. The test liquids were ordinary (natural) water (deuterium content equal to 157 ppm) and deuterium-depleted water (deuterium content is equal to 3 ppm). Simultaneously with the excitation of luminescence, the Nafion plate was irradiated with ultrasonic pulses, having a duration of 1 μs. The ultrasonic waves were generated with different repetition rates and amplitudes, and irradiated the surface of Nafion in the geometry of grazing or normal incidence. Luminescence regimes were studied when the membrane was irradiated with one ultrasonic wave (one piezoelectric transducer) or two counter-propagating waves (two piezoelectric transducers). It turned out that ultrasonic waves, which fall normal to the membrane interface, do not affect the dynamics of luminescence. At the same time, in the case of ultrasonic irradiation in the grazing incidence geometry, sharp jumps in the luminescence intensity occur, and the behavior of these jumps substantially depends on the mode of irradiation: one or two piezoelectric transducers. This allows for control of the dynamics of luminescence from the polymer surface. In accordance with this model, the possibility of altering the luminescence dynamics is due to the effect of unwinding the polymer fibers from the surface toward the liquid bulk upon soaking. It is important that such unwinding does not occur in deuterium-depleted water, which was confirmed in a direct experiment with dynamic light scattering from polydisperse aqueous suspensions of Nafion nanometer-sized particles; these suspensions were prepared in ordinary water and deuterium-depleted water. Thus, ultrasonic irradiation affects the dynamics of luminescence only when Nafion is swollen in ordinary water; in the case of deuterium-depleted water this effect is missed.
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Affiliation(s)
- Nikolai F. Bunkin
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (P.N.B.); (V.A.K.); (A.O.K.); (M.A.O.)
| | - Maxim E. Astashev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Street 38, 119991 Moscow, Russia; (M.E.A.); (E.I.N.)
| | - Polina N. Bolotskova
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (P.N.B.); (V.A.K.); (A.O.K.); (M.A.O.)
| | - Valeriy A. Kozlov
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (P.N.B.); (V.A.K.); (A.O.K.); (M.A.O.)
| | - Artem O. Kravchenko
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (P.N.B.); (V.A.K.); (A.O.K.); (M.A.O.)
| | - Egor I. Nagaev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova Street 38, 119991 Moscow, Russia; (M.E.A.); (E.I.N.)
| | - Maria A. Okuneva
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Street 5, 105005 Moscow, Russia; (P.N.B.); (V.A.K.); (A.O.K.); (M.A.O.)
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Lee EC, Park J. Unraveling the Structural Instability of Li(Ni 0.80 Co 0.15 Al 0.05 )O 2 as a Cathode Material Due to Operating a Li-ion Battery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200581. [PMID: 35607753 DOI: 10.1002/smll.202200581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/17/2022] [Indexed: 06/15/2023]
Abstract
The change of the crystal structure for Li(Ni0.80 Co0.15 Al0.05 )O2 as a cathode material in a Li-ion battery is traced. During charging and discharging, the crystallographic change of Lix (Ni0.80 Co0.15 Al0.05 )O2 (x ≈ 1.0-0.25) is confirmed with in situ X-ray diffraction, an electrochemical measurement, and the density functional theory calculation. Li atoms after cycling do not completely return to the initial state and defects in the Li-layer generate about 5%. The effect of defects in the Li-layer reveals the transformation of crystal structure and the change of lattice constants. Upon increasing the temperature, the instability of Li0.95 (Ni0.80 Co0.15 Al0.05 )O2 is clearly shown as the movement of transition metals using X-ray and neutron diffraction. The crystallographic values dramatically change upon increasing from 373 to 423 K, but linearly vary upon decreasing temperature. Furthermore, the result of the calculation demonstrates that the possible atom for mixing is Ni. The evolution of magnetic properties explicitly certifies the atomic movement that gives rise to a spin-glass state through the induction of ferromagnetism. In conclusion, defects are created in crystal structure during operation of the Li-ion battery and generate structural instability. The results provide the cause and mechanism of the degradation of cathode material in a Li-ion battery.
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Affiliation(s)
- Eun Cheol Lee
- R&D Center, Samsung SDI Co. Ltd., 130, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16678, Republic of Korea
| | - Junghwan Park
- R&D Center, Samsung SDI Co. Ltd., 130, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16678, Republic of Korea
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Huang TS, Wen HY, Chen YY, Hung PH, Hsieh TL, Huang WY, Chang MY. Ionomer Membranes Produced from Hexaarylbenzene-Based Partially Fluorinated Poly(arylene ether) Blends for Proton Exchange Membrane Fuel Cells. MEMBRANES 2022; 12:membranes12060582. [PMID: 35736289 PMCID: PMC9231265 DOI: 10.3390/membranes12060582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 01/25/2023]
Abstract
In this study, a series of high molecular weight ionomers of hexaarylbenzene- and fluorene-based poly(arylene ether)s were synthesized conveniently through condensation and post-sulfonation modification. The use a of blending method might increase the stacking density of chains and affect the formation both of interchain and intrachain proton transfer clusters. Multiscale phase separation caused by the dissolution and compatibility differences of blend ionomer in high-boiling-point solvents was examined through analysis and simulations. The blend membranes produced in this study exhibited a high proton conductivity of 206.4 mS cm−1 at 80 °C (increased from 182.6 mS cm−1 for precursor membranes), excellent thermal resistance (decomposition temperature > 200 °C), and suitable mechanical properties with a tensile strength of 73.8−77.4 MPa. As a proton exchange membrane for fuel cell applications, it exhibits an excellent power efficiency of approximately 1.3 W cm−2. Thus, the ionomer membranes have strong potential for use in proton exchange membrane fuel cells and other electrochemical applications.
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Affiliation(s)
- Tzu-Sheng Huang
- Department of Photonics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (T.-S.H.); (Y.-Y.C.); (P.-H.H.)
| | - Hsin-Yi Wen
- Department of Green Energy and Environmental Resources, Chang Jung Christian University, Tainan City 71101, Taiwan;
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, Taiwan
| | - Yi-Yin Chen
- Department of Photonics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (T.-S.H.); (Y.-Y.C.); (P.-H.H.)
| | - Po-Hao Hung
- Department of Photonics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (T.-S.H.); (Y.-Y.C.); (P.-H.H.)
| | - Tung-Li Hsieh
- General Education Center, Wenzao Ursuline University of Languages, Kaohsiung 80793, Taiwan;
| | - Wen-Yao Huang
- Department of Photonics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (T.-S.H.); (Y.-Y.C.); (P.-H.H.)
- Correspondence: (W.-Y.H.); (M.-Y.C.)
| | - Mei-Ying Chang
- Department of Photonics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; (T.-S.H.); (Y.-Y.C.); (P.-H.H.)
- Correspondence: (W.-Y.H.); (M.-Y.C.)
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48
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Intensifying antibacterial and electrochemical behaviors of CuO induced-ion exchange membrane for water treatment. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03023-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Xu T, Wu B, Hou L, Zhu Y, Sheng F, Zhao Z, Dong Y, Liu J, Ye B, Li X, Ge L, Wang H, Xu T. Highly Ion-Permselective Porous Organic Cage Membranes with Hierarchical Channels. J Am Chem Soc 2022; 144:10220-10229. [PMID: 35586909 DOI: 10.1021/jacs.2c00318] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Membranes of high ion permselectivity are significant for the separation of ion species at the subnanometer scale. Here, we report porous organic cage (i.e., CC3) membranes with hierarchical channels including discrete internal cavities and cage-aligned external cavities connected by subnanometer-sized windows. The windows of CC3 sieve monovalent ions from divalent ones and the dual nanometer-sized cavities provide pathways for fast ion transport with a flux of 1.0 mol m-2 h-1 and a mono-/divalent ion selectivity (e.g., K+/Mg2+) up to 103, several orders of magnitude higher than the permselectivities of reported membranes. Molecular dynamics simulations illustrate the ion transport trajectory from the external to internal cavity via the CC3 window, where ions migrate in diverse hydration states following the energy barrier sequence of K+ < Na+ < Li+ ≪ Mg2+. This work sheds light on ion transport properties in porous organic cage channels of discrete frameworks and offers guidelines for developing membranes with hierarchical channels for efficient ion separation.
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Affiliation(s)
- Tingting Xu
- Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Bin Wu
- School of Chemistry & Chemical Engineering, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, China
| | - Linxiao Hou
- Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Yanran Zhu
- Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Fangmeng Sheng
- Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Zhang Zhao
- Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Yun Dong
- State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
| | - Jiandang Liu
- State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
| | - Bangjiao Ye
- State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
| | - Xingya Li
- Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Liang Ge
- Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
| | - Huanting Wang
- Department of Chemical and Biological Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Tongwen Xu
- Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
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Wang W, Yang C, Wang W, Fu R, Wang H. Novel compact ion exchange membranes through suppressing reverse permeation for high-efficiency recovery of inorganic acids. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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