Electrochemical Membranes for Micropollutant Removal

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Applications for Water Treatment".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 1195

Special Issue Editors


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Guest Editor
Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France
Interests: membrane processes; micropollutants; membrane characterization; fouling; biofouling; antifouling strategies; bioinspired membranes; water treatment; wastewater treatment; structure–properties relationship; coupling and hybrid processes

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Guest Editor
Laboratoire Géomatériaux et Environnement EA 4508, Université Gustave Eiffel, CEDEX 2, 77454 Marne-la-Vallée, France
Interests: Fenton reaction; water treatment; wastewater treatment; advanced oxidation processes; water electrolysis; polycyclic aromatic hydrocarbons; soil remediation; humic acid; electrochemical engineering; electrocatalysis; environmental engineering; pharmaceuticals; environment; analytical chemistry; environmental analysis; environmental chemistry

Special Issue Information

Dear Colleagues,

The development of electrochemical membranes (EMFs) has gained popularity over the last few decades with the aim of providing cost-effective water treatment technologies. The membrane filtration (MF) configuration reduces mass transport limitation, and the combined process offers the degradation efficiency advantages of advanced electrochemical oxidation processes (EAOPs) with better control of fouling problems. They also offer high performance for micropollutant removal and complex wastewater treatment in general, with high flux and mineralization current efficiencies. They are considered a real breakthrough in EAOP and MF processes.

In this Special Issue, authors are invited to submit original papers and reviews on the topic of electrochemical membranes for micropollutant removal. Contributions may concern (i) the development of new REM materials and their characterization, (ii) the optimization of REM performance via surface modifications and/or the study of electrochemical and/or filtration parameters, (iii) the assessment and control of fouling in REM processes, (iv) the use of REMs for the treatment of specific micropollutants in synthetic solutions (with environmental considerations) and/or complex real wastewaters, etc.

Dr. Clémence Coetsier
Dr. Clement Trellu
Guest Editors

Manuscript Submission Information

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Keywords

  • electrochemical membranes
  • micropollutants
  • water and wastewater treatment

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Published Papers (1 paper)

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Research

23 pages, 2786 KB  
Article
Membrane-Assisted Electrochemical Removal of Mg2+ and Ca2+ from Lithium Brines: Effects of Temperature and Current Density Through a Zeta Potential Approach
by Alonso González, Geovanna Choque, Mario Grágeda and Svetlana Ushak
Membranes 2025, 15(9), 250; https://doi.org/10.3390/membranes15090250 - 25 Aug 2025
Viewed by 742
Abstract
Understanding surface charge behavior is essential for improving ion separation during lithium brine treatment. This paper investigates the performance of a three-compartment electrodialysis system designed for the selective removal of divalent cations (Mg2+ and Ca2+). The relationship between zeta potential [...] Read more.
Understanding surface charge behavior is essential for improving ion separation during lithium brine treatment. This paper investigates the performance of a three-compartment electrodialysis system designed for the selective removal of divalent cations (Mg2+ and Ca2+). The relationship between zeta potential and the recovery of Li+, Na+, and K+ is analyzed. Zeta potential measurements at various pH values showed that Mg(OH)2 particles maintained a positive charge. The system facilitated the precipitation of Mg(OH)2 and Ca(OH)2 via electrochemically generated OH ions. The specific electrical energy consumption was evaluated for each operating condition. The results showed that the zeta potential of the precipitates was affected by both the current density and temperature. This influenced lithium losses due to brine entrapment within the precipitated solids. At 600 A/m2 and 50 °C, more than 99% of Mg2+ and Ca2+ were removed, and more than 90% of lithium was recovered, with a specific electric energy consumption of 2.58 kWh per kilogram of Li recovered. The system also generates HCl as a valuable by-product, which improves the sustainability of the process. This study provides a new framework for improving the energy efficiency of lithium purification from brines and lithium recovery. Full article
(This article belongs to the Special Issue Electrochemical Membranes for Micropollutant Removal)
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