Design, Synthesis and Applications of Ion Exchange Membranes

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Fabrication and Characterization".

Deadline for manuscript submissions: 31 January 2025 | Viewed by 844

Special Issue Editors


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Guest Editor
Department of Structure of Matter, Thermal Physics and Electronics, Faculty of Physics, Complutense University of Madrid, Plaza de Ciencias, 1, 28040 Madrid, Spain
Interests: non-equilibrium thermodynamics; membrane transport processes; ion-exchange membranes; energy conversion
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev 103A, 1113 Sofia, Bulgaria
Interests: polybenzimidazoles and solid polymer electrolyte membranes therefrom&mdahs;synthesis; processing and characterization; ion-conductive membranes (both proton- and anion conductive); nanocomposite membranes; inversed and asymmetric membranes; chemically crosslinked membranes/cross-linking; stabilization; novel electrolyte systems, including ionic liquids and eutectics; electrospinning and nanofibers
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Special Issue Information

Dear Colleagues,

Since its beginnings more than half a century ago, ionic exchange membrane technology now covers many chemical and electrochemistry technology fields. Ion exchange membranes (IEMs), including fully polymeric, ceramic, and hybrid ones, have great potential in diverse applications for industry, public health, and environmental issues, as well as emerging applications in the field of contemporary green energy conversion technology. The technical feasibility of all membrane processes largely depends on the general membrane properties, and there is a significant variation in IEM types. Having the most suitable membrane for a given application constitutes a major challenge; for this reason, IEMs have been extensively studied in both academia and industry. Materials, designs, synthetic methods, and, last but not at least, their aimed niche applications, in addition to their possible post-application utilization and recyclability, are all crucial issues in the field of IEMs.

Research contributions on the different aspects related to ion exchange membranes are welcome to this Special Issue.

Dr. V. María Barragán
Dr. Hristo Penchev
Guest Editors

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Keywords

  • ion exchange membranes
  • design
  • applications
  • structure–property relationship
  • chemical stabilization
  • ion transport enhancement

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Published Papers (1 paper)

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Research

13 pages, 3506 KiB  
Article
Study on Efficient Operating Conditions for Bipolar Membrane Electrodialysis Using Different Ion Species and Anion-Exchange Membranes
by Sadato Kikuchi, Souichiro Hirao, Shunya Kayakiri, Yuriko Kakihana and Mitsuru Higa
Membranes 2024, 14(12), 262; https://doi.org/10.3390/membranes14120262 - 6 Dec 2024
Viewed by 470
Abstract
To investigate efficient operating conditions for bipolar membrane electrodialysis (BMED), a comparison of current efficiency (CE) and power intensity (PI) was conducted using different anion-exchange membranes (AEMs) and salt solutions (NaCl and Na2SO4) as feed [...] Read more.
To investigate efficient operating conditions for bipolar membrane electrodialysis (BMED), a comparison of current efficiency (CE) and power intensity (PI) was conducted using different anion-exchange membranes (AEMs) and salt solutions (NaCl and Na2SO4) as feed solutions in BMED. The results indicated that CE was higher and PI was lower for a commercial proton-blocking AEM (ACM) than for a standard AEM (ASE) when NaCl was used. This is because ASE has a higher water content than ACM, leading to greater H+ permeability, which reduces CE. Conversely, when Na2SO4 was used, ASE exhibited higher CE and lower cell voltage (CV) than ACM, resulting in lower PI for ASE. This is attributable to the fact that, with Na2SO4, the effect of CV was more significant than H+ permeability. These findings suggest that efficient operation can be achieved by selecting the appropriate combination of AEMs and salt solutions. Full article
(This article belongs to the Special Issue Design, Synthesis and Applications of Ion Exchange Membranes)
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