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Membranes
Special Issues
Ion Exchange Membranes and Technologies for Efficient Recovery of Metals
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Ion Exchange Membranes and Technologies for Efficient Recovery of Metals

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

Deadline for manuscript submissions: closed (31 July 2024) | Viewed by 1192

Special Issue Editors

Dr. Ramato Ashu Tufa

E-Mail Website
Guest Editor
Department of Environmental Engineering, University of Calabria (DIAm-UNICAL), Via P. Bucci CUBO 44/A, 87036 Rende, Italy
Interests: ion exhcange membranes; reverse electrodialysis; water electrolysis; hydrogen production; CO2 reduction
Special Issues, Collections and Topics in MDPI journals
Dr. Wenjuan Zhang

E-Mail Website
Guest Editor
Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
Interests: ion exchange membranes; (reverse) electrodialysis; electrochemical impedance spectroscopy

Special Issue Information

Dear Colleagues,

The recovery of metals from different sources such as wastewater and brine is of great importance due to their limited supply and rising demand. Membrane technologies present a promising alternative for the more sustainable and cost-effective recovery of metals. In particular, ion exchange membrane technologies such as electrodialysis (ED) and Donnan dialysis (DD) have the potential for highly selective and energy-efficient metal recovery. This Special Issue aims to gather and disseminate recent findings in the development of ion exchange membranes and the analysis and testing of applications in ED and DD, among others, for the efficient recovery of metals from hypersaline brines and various wastewater resources. 

Dr. Ramato Ashu Tufa
Dr. Wenjuan Zhang
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

  • ion exchange membranes
  • bipolar membranes
  • electrodialysis
  • Donnan dialysis
  • metal recovery
  • circular economy

Published Papers (1 paper)

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Research

19 pages, 5738 KiB  
Article
Low-Resistance Membrane vs. High-Resistance Membrane Performance Utilizing Electrodialysis–Evaporator Hybrid System in Treating Reject Brine from Kuwait Desalination Plants
by Bader S. Al-Anzi and Maryam K. Awadh
Membranes 2024, 14(8), 163; https://doi.org/10.3390/membranes14080163 - 24 Jul 2024
Viewed by 478
Abstract
This work is an effort to mitigate the existing environmental issues caused by brine discharge from Kuwait’s desalination plants and to find an economical and efficient way of managing reject brine from local desalination plants. Low- and high-resistance membranes (LRMs and HRMs, respectively) [...] Read more.
This work is an effort to mitigate the existing environmental issues caused by brine discharge from Kuwait’s desalination plants and to find an economical and efficient way of managing reject brine from local desalination plants. Low- and high-resistance membranes (LRMs and HRMs, respectively) were used to produce salt and low-salinity water from brine effluent utilizing an electrodialysis (ED)–evaporator hybrid system. The effect of high current densities of 300, 400, and 500 A/m2 and brine flowrates of 450 and 500 L/h on the quality of produced salt and diluate were investigated for LRM and HRM. The recovered salt purity for LRM is up to 90.58%. Results show that the low-resistance membrane (LRM) achieved higher water recovery, energy consumption, desalination rate, operation time and ion removal rate than those of the high-resistance membrane (HRM) under the same operating conditions. The difference in concentration for 300 A/m2 between LRM and HRM increased from 0.93% at 10 min to 8.28% at 140 min. The difference in diluate concentration effluent is negligible for both membranes, whereas LRM produced higher concentrate effluent than HRM for all current densities and low flowrate (400 L/h). The maximum difference between LRM and HRM (with LRM achieving higher concentrations) is 10.7% for 400 A/m2. The permselectivity of LRM for monovalent cations decreased with current density, whereas the effect on permselectivity for HRM was insignificant for the current density values. The addition of a neutral cell was effective in reducing the buildup of divalent ions on the inner membrane of the cathode side. Full article
(This article belongs to the Special Issue Ion Exchange Membranes and Technologies for Efficient Recovery of Metals)
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