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Membranes
Special Issues
Mixed-Matrix Membranes: Preparation, Characterization, Modeling/Simulation and Applications
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Mixed-Matrix Membranes: Preparation, Characterization, Modeling/Simulation and Applications

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

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 3545

Special Issue Editors

Prof. Dr. Sherif H. Kandil

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Guest Editor
Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, Alexandria 21526, Egypt
Interests: materials Science; physical chemistry; membrane separation; polymeric materials
Dr. Norhan Nady

E-Mail Website
Guest Editor
Polymeric Materials Research Department, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt
Interests: membrane science and engineering; membrane fouling; surface modification; water desalination; membrane distillation; gas separation; hydrogels; green technology
Dr. Mohamed R. Elmarghany

E-Mail Website
Guest Editor
Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt
Interests: water desalination; membrane distillation; electrospinning; nanofibers fabrications

Special Issue Information

Dear Colleagues,

Mixed matrix membranes (MMMs) result from the incorporation of a solid phase in a continuous polymer matrix. These membranes offer new opportunities to the needs of the industry to obtain materials exhibiting the advantages of both the polymeric matrix and the inorganic filler, thus minimizing the drawbacks of both components, which is the key to improving the separation process. This issue will cover numerous different aspects of mixed matrix membranes regarding fabrication techniques, configuration, geometry, post-treatment, fillers, characterization, separation mechanism, modeling and simulation, and their applications in different fields. Overall, this Special Issue is orientated to all the above-cited research topics, directed to solving some of the environmental and technical challenges faced by industries.

This Special Issue will focus on the materials, structure, function, simulation/model, and performance of recently developed mixed matrix membranes and their advantages in the development of new or upgrading of old separation processes. I invite you to contribute to this Special Issue. Review articles, short communications, and full-size research papers are all welcome.

Prof. Dr. Sherif H. Kandil
Dr. Norhan Nady
Dr. Mohamed R. R. Elmarghany
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

  • mixed matrix membranes (MMMs)
  • preparation techniques
  • nanostructured inorganic fillers
  • metal–organic framework (MOF)
  • magnetic membranes
  • membrane characterization
  • separation simulation
  • separation mechanisms
  • membrane performance
  • membrane applications (gas and liquid fluids)

Published Papers (2 papers)

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Research

21 pages, 5553 KiB  
Article
Novel Magnetic Mixed Cellulose Acetate Matrix Membranes with Oxygen-Enrichment Potential
by Norhan Nady, Noha Salem, Mohamed R. Elmarghany, Mohamed S. Salem and Sherif H. Kandil
Membranes 2022, 12(12), 1259; https://doi.org/10.3390/membranes12121259 - 13 Dec 2022
Cited by 1 | Viewed by 1598
Abstract
This work presents novel magnetic mixed cellulose-based matrix membranes that combine the advantages of a low-cost common polymer matrix, such as cellulose acetate (CA), and a low-cost magnetic filler. Moreover, the presented magnetic mixed CA matrix membranes were fabricated and used without applying [...] Read more.
This work presents novel magnetic mixed cellulose-based matrix membranes that combine the advantages of a low-cost common polymer matrix, such as cellulose acetate (CA), and a low-cost magnetic filler. Moreover, the presented magnetic mixed CA matrix membranes were fabricated and used without applying an external magnetic field during either the membrane casting or the separating process. Poly(methylmethacrylate) and lithium chloride were used in order to improve the mechanical properties and porosity of the fabricated membranes. The iron–nickel magnetic alloys used were prepared through a simple chemical reduction method with unique morphologies (Fe10Ni90—starfish-like and Fe20Ni80—necklace-like). The novel magnetic mixed CA matrix membranes fabricated were characterized using different analysis techniques, including SEM, EDX, XRD, TGA, and FTIR-ATR analyses. Furthermore, the static water contact angle, membrane thickness, surface roughness, tensile strength, and membrane porosity (using ethanol and water) were determined. In addition, vibrating sample magnetometer (VSM) analysis was conducted and the oxygen transition rate (OTR) was studied. The magnetic mixed CA matrix membrane containing starfish-like Fe10Ni90 alloy was characterized by high coercivity (109 Oe) and an efficient 1.271 × 10−5 cm3/(m2·s) OTR compared to the blank CA membrane with 19.8 Oe coercivity and no OTR. The effects of the polymeric matrix composition, viscosity, and compatibility with the alloys/fillers used on the structure and performance of the fabricated mixed CA matrix membranes compared to the previously used poly(ethersufone) polymeric matrix are discussed and highlighted. The novel magnetic mixed CA matrix membranes presented have good potential for use in the oxygen-enrichment process. Full article
(This article belongs to the Special Issue Mixed-Matrix Membranes: Preparation, Characterization, Modeling/Simulation and Applications)
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16 pages, 2703 KiB  
Article
Monte Carlo Simulations for the Estimation of the Effective Permeability of Mixed-Matrix Membranes
by Zheng Cao, Boguslaw Kruczek and Jules Thibault
Membranes 2022, 12(11), 1053; https://doi.org/10.3390/membranes12111053 - 27 Oct 2022
Cited by 3 | Viewed by 1452
Abstract
Recent years have seen the explosive development of mixed-matrix membranes (MMMs) for a myriad of applications. In gas separation, it is desired to concurrently enhance the permeability, selectivity and physicochemical properties of the membrane. To help achieving these objectives, experimental characterization and predictive [...] Read more.
Recent years have seen the explosive development of mixed-matrix membranes (MMMs) for a myriad of applications. In gas separation, it is desired to concurrently enhance the permeability, selectivity and physicochemical properties of the membrane. To help achieving these objectives, experimental characterization and predictive models can be used synergistically. In this investigation, a Monte Carlo (MC) algorithm is proposed to rapidly and accurately estimate the relative permeability of ideal MMMs over a wide range of conditions. The difference in diffusivity coefficients between the polymer matrix and the filler particle is used to adjust the random progression of the migrating species inside each phase. The solubility coefficients of both phases at the polymer–filler interface are used to control the migration of molecules from one phase to the other in a way to achieve progressively phase equilibrium at the interface. Results for various MMMs were compared with the results obtained with the finite difference method under identical conditions, where the results from the finite difference method are used in this investigation as the benchmark method to test the accuracy of the Monte Carlo algorithm. Results were found to be very accurate (in general, <1% error) over a wide range of polymer and filler characteristics. The MC algorithm is simple and swift to implement and provides an accurate estimation of the relative permeability of ideal MMMs. The MC method can easily be extended to investigate more readily non-ideal MMMs with particle agglomeration, interfacial void, polymer-chain rigidification and/or pore blockage, and MMMs with any filler geometry. Full article
(This article belongs to the Special Issue Mixed-Matrix Membranes: Preparation, Characterization, Modeling/Simulation and Applications)
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