Research on Electrodialytic Processes

A special issue of Membranes (ISSN 2077-0375).

Deadline for manuscript submissions: 31 August 2024 | Viewed by 671

Special Issue Editors


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Guest Editor
Department of Chemical and Nuclear Engineering (IEC Group, ISIRYM), Universitat Politècnica de València, Valencia, Spain
Interests: wastewater treatment; water treatment; water and wastewater treatment; separation processes; separation technologies; electrodialysis; Donnan dialysis; ion exchange membrane; chronopotentiometry; electrochemical membrane evaluation; concentration polarization; electroconvection; water dissociation; water splitting; over-limiting ion transfer mechanisms
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Departmet of Chemical and Nuclear Engineering (IEC Group, ISIRYM), Universitat Politècnica de València, 46022 València, Spain
Interests: wastewater treatment; water treatment; water and wastewater treatment; separation processes; separation technologies; electrodialysis; donnan dialysis; ion-exchange membrane; chronopotentiometry; electrochemical membrane evaluation; concentration polarization; electroconvection; water dissociation; water splitting; overlimiting ion transfer mechanisms; cyclic voltammetry; electrodeposition; electrochemical impedance spectroscopy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrodialysis is a mature separation technique in which ions migrate through electromembranes that are selective to cations or anions. Due to its versatility, electrodialysis has become a multifunctional process that is applied in several fields, such as seawater desalination, the treatment of various industrial wastewaters, as well as the production of food, medicines, biopolymers, ultrapure water, acids, and alkali. The main advantages of electrodialytic processes include their ability to extract and recover valuable components and the fact that, in most situations, it is not necessary to add reagents to the solution for treatment. On the other hand, the costs of ion exchange membranes and energy consumption are relatively high, besides the maintenance to mitigate the negative effects caused by fouling phenomena. Therefore, to ensure the economical and technical viability of electrodialytic processes, it is crucial that studies are carried out in order to 1) develop new membranes that are more selective to certain types of ions and present lower electrical resistance and costs (monopolar, bipolar, mosaic, amphoteric, monovalent selective ones, etc.), 2) develop new spacer configurations to promote turbulence at the membranes and intensify the ion transfer rate, 3) propose new layouts that reduce the total resistance of the system, 4) evaluate methods to mitigate fouling occurrence and 5) membrane cleaning procedures that extend their lifespan, 6) evaluate the impact of over-limiting mechanisms on membranes and the practical viability of operating the separation processes at over-limiting current regimes, and 7) propose hybrid processes that overcome the limitations faced in each of the processes when operated separately, among other things. This Special Issue serves as a platform gathering all recent advances in the broad scope of electrodialytic processes: Articles, case studies, reviews, and communications are welcome and are held in high regard.

Dr. Kayo Santana Barros
Prof. Dr. Valentín Pérez-Herranz
Guest Editors

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

  • electrodialysis
  • electro-electrodialysis
  • electrodialysis with bipolar membrane
  • electrodialysis reversal
  • fouling
  • concentration polarization at electro membranes
  • electroconvection

Published Papers (1 paper)

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Research

22 pages, 2866 KiB  
Article
Targeted Anthocyanin Enrichment of Cranberry Juice by Electrodialysis with Filtration Membranes: Impact of Filtration Membrane Physicochemical Properties and Predictive Statistical Models
by Eva Revellat and Laurent Bazinet
Membranes 2024, 14(5), 111; https://doi.org/10.3390/membranes14050111 - 14 May 2024
Viewed by 505
Abstract
To optimize cranberry juice enrichment, correlation between physicochemical properties of filtration membranes (FM) and anthocyanin migration was investigated during electrodialysis with filtration membranes (EDFM) using redundancy (RDA) and multivariate regression (MRGA) analyses. Six polyether sulfone (PES) and polyvinylidene fluoride (PVDF) membranes with molecular [...] Read more.
To optimize cranberry juice enrichment, correlation between physicochemical properties of filtration membranes (FM) and anthocyanin migration was investigated during electrodialysis with filtration membranes (EDFM) using redundancy (RDA) and multivariate regression (MRGA) analyses. Six polyether sulfone (PES) and polyvinylidene fluoride (PVDF) membranes with molecular weight cut-offs between 150 and 500 kDa, commercially available at large scale, were characterized in terms of nine physicochemical characteristics and used for EDFM. The highest migration of total anthocyanin was obtained with PVDF 250 kDa, with a global migration rate of 3.5 ± 0.4 g/m2·h. RDA showed that two FM properties (mesopore porosity and hydrophilic porosity) were significantly negatively correlated to the anthocyanin’s migration and explained 67.4% of their total variation in migration. Predictive MRGA models were also developed for each anthocyanin based on these significant FM properties. A combination of intermolecular interactions may lead to binding in a cooperative and synergistic mode and hinder the anthocyanin migration. Full article
(This article belongs to the Special Issue Research on Electrodialytic Processes)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Development of Cationic Poly (2,6-Dimethyl-1,4-Phenylene Oxide) Sulfonate Membranes for Electrodialysis
Authors: J. F. CORTE; V. D. Jahno; M. A. S. Rodrigues; A. M. Bernardes; F. Celso
Affiliation: Feevale University, Novo Hamburgo, Brazil; Federal University of Rio Grande do Sul, Porto Alegre, Brazil; Federal University of Pelotas, Pelotas, Brazil
Abstract: Electrodialysis is a water and wastewater treatment process that removes ions from a solution through ion exchange membranes under action of a electric field. Such process promotes a high quality of treated effluent without the need of chemicals. This article aimed to develop cation exchange membranes by sulfonation of Poly (p-phenylene oxide). Membranes were produced by two steps: (1) PPO was sulfonated using sulfuric acid as sulfonating agent; (2) cationic membranes were casted from solution of n-methyl pirrolidone. The membranes were characterized by FTIR, TGA, water swelling, IEC and ionic conductivity. Membranes were applied in a laboratory electrodyalisis system, and performance was compared to commercial membranes. It was possible to obtain membranes with two degrees of sulfonation, with 17.4% and 42.3%. Membranes presented, respectively, IEC of 1.4 mmol/g and 2.6 mmol/g and water swelling of 20% and 44.9%, while ionic conductivity varied from 0.2 x 10-3 S/cm to 1.4 x 10-2 S/cm. The membranes showed sodio extraction around 65%, while commercial membrane HDX100 reached 46.4%. These results indicate that membranes developed are promising to be applied in electrodialysis systems, since showed higher performance than the commercial one.

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