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Membranes
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Advanced Research on Electro-Membrane Processes
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Advanced Research on Electro-Membrane Processes

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

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 4667

Special Issue Editors

Dr. Anna Siekierka

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Guest Editor
Department of Process Engineering and Technology of Polymer and Carbon Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Norwida 4/6, 50-373 Wrocław, Poland
Interests: electro-membrane processes; separation; electrodialisis; capacitive deionization; hybrid capacitive deionization; capacitive mixing; selectivity; ion exchange membranes; adsorbents; spines; lithium; cobalt; brines; battery spent
Prof. Dr. Marek Bryjak

E-Mail Website1 Website2
Co-Guest Editor
Department of Process Engineering and Technology of Polymer and Carbon Materials, Wroclaw University of Science and Technology, Wyb. St. Wyspianskiego 27, 50-370 Wroclaw, Poland
Interests: functional polymers; polymer membranes and sorbents; separation processes; polymer modification; surface characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nowadays, electro-membrane processes (EMPs) are receiving increasing interest in academia and industrial fields due to their wide range of applications, e.g., desalination, separation, and energy production. This trend is provided by the variety of used materials (ion exchange membranes, sorbents, semi-conductors, fibrous material, etc.) as well as the flexibility of cell constructions. Hence, advanced research on electro-membrane processes is focused on searching for energy effective materials as well as novel architecture and unique configurations. EMPs have been applied for selective separation processes, catalytical decomposition of dangerous compounds, and energy harvesting. EMPs have thus become a major competitor for traditional methods used in chemical and environment engineering. 

The current Special Issue aims to find the state-of-the-art in research and reviews in electro-membrane processes. This topic is comprehensive and may involve exploration of innovative and modern materials for EMPs, membrane design, fabrication methods, theoretical investigations and calculations, structure–performance relationships, novel applications, designing of EMP cells, hybrid systems and more. In this call for papers, we welcome original research articles and review articles, as well as communications.

Dr. Anna Siekierka
Guest Editor
Prof. Dr. Marek Bryjak
Co-Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Membranes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Electro-membrane processes
  • Selective separations
  • Energy generation
  • Membrane design
  • Electrodialysis

Published Papers (2 papers)

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Research

18 pages, 3758 KiB  
Article
Modified Poly(vinylidene fluoride) by Diethylenetriamine as a Supported Anion Exchange Membrane for Lithium Salt Concentration by Hybrid Capacitive Deionization
by Anna Siekierka and Marek Bryjak
Membranes 2022, 12(2), 103; https://doi.org/10.3390/membranes12020103 - 18 Jan 2022
Cited by 6 | Viewed by 1461
Abstract
This paper shows the investigation for the optimal anion exchange membranes (AEM) supporting the desorption step of the HCDI process. The chemical modification of PVDF by diethylene triamine created the AEM. To confirm the ion-exchange character of materials, the chemical analysis with FTIR, [...] Read more.
This paper shows the investigation for the optimal anion exchange membranes (AEM) supporting the desorption step of the HCDI process. The chemical modification of PVDF by diethylene triamine created the AEM. To confirm the ion-exchange character of materials, the chemical analysis with FTIR, SEM, surface energetics, and transportation analysis were applied. Next, the investigated membranes were applied for the sorption and desorption of lithium chloride. The specific sorptive parameters were higher according to the incorporation of the nitrogen groups into polymeric chains. Considering the desorption efficiency, membranes modified by four days were selected for further evaluation. The application in the HCDI process allowed reaching the desorption efficiency at 90%. The system composed of PVDF-DETA4 membrane was suitable for sorption 30 mg/g of salt. By applying the PVDF-DETA4 membrane, it is possible to concentrate LiCl with four factors. The anion exchange character of the developed membrane was confirmed by adsorption kinetics and isotherms of chlorides, nitrates, sodium, and lithium. The prepared membrane could be considered a perspective material suitable for concentration salt with electro-driven technologies for the above reasons. Full article
(This article belongs to the Special Issue Advanced Research on Electro-Membrane Processes)
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18 pages, 4593 KiB  
Article
Fouling Mitigation by Optimizing Flow Rate and Pulsed Electric Field during Bipolar Membrane Electroacidification of Caseinate Solution
by Vladlen S. Nichka, Victor V. Nikonenko and Laurent Bazinet
Membranes 2021, 11(7), 534; https://doi.org/10.3390/membranes11070534 - 15 Jul 2021
Cited by 7 | Viewed by 1963
Abstract
The efficiency of separation processes using ion exchange membranes (IEMs), especially in the food industry, is significantly limited by the fouling phenomenon, which is the process of the attachment and growth of certain species on the surface and inside the membrane. Pulsed electric [...] Read more.
The efficiency of separation processes using ion exchange membranes (IEMs), especially in the food industry, is significantly limited by the fouling phenomenon, which is the process of the attachment and growth of certain species on the surface and inside the membrane. Pulsed electric field (PEF) mode, which consists in the application of constant current density pulses during a fixed time (Ton) alternated with pause lapses (Toff), has a positive antifouling impact. The aim of this study was to investigate the combined effect of three different relatively high flow rates of feed solution (corresponding to Reynolds numbers of 187, 374 and 560) and various pulse–pause ratios of PEF current regime on protein fouling kinetics during electrodialysis with bipolar membranes (EDBM) of a model caseinate solution. Four different pulse/pause regimes (with Ton/Toff ratios equal to 10 s/10 s, 10 s/20 s, 10 s/33 s and 10 s/50 s) during electrodialysis (ED) treatment were evaluated at a current density of 5 mA/cm2. It was found that increasing the pause duration and caseinate solution flow rate had a positive impact on the minimization of protein fouling occurring on the cationic surface of the bipolar membrane (BPM) during the EDBM. Both a long pause and high flow rate contribute to a more effective decrease in the concentration of protons and caseinate anions at the BPM surface: a very good membrane performance was achieved with 50 s of pause duration of PEF and a flow rate corresponding to Re = 374. A further increase in PEF pause duration (above 50 s) or flow rate (above Re = 374) did not lead to a significant decrease in the amount of fouling. Full article
(This article belongs to the Special Issue Advanced Research on Electro-Membrane Processes)
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