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Membranes
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Mixed Matrix Membranes II. From Lab Scale towards Application
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Mixed Matrix Membranes II. From Lab Scale towards Application

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

Deadline for manuscript submissions: closed (15 November 2020) | Viewed by 22385

Special Issue Editors

Dr. Clara Casado-Coterillo

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Guest Editor
Department of Chemical and Biomolecular Engineering, University of Cantabria, Av. Los Castros s/n, 39005 Santander, Spain
Interests: synthesis; characterization; CO2 capture and utilization; mixed matrix membranes; pervaporation; sustainable process intensification using membranes
Special Issues, Collections and Topics in MDPI journals
Dr. Oana David

E-Mail Website
Guest Editor
Membrane Technology and Process Intensification, Materials & Processes, Energy and Environment Division, TECNALIA Research & Innovation, Parque Tecnológico de San Sebastián, Mikeletegi Pasealekua, 2, E-20009 Donostia-San Sebastián - Gipuzkoa, Spain
Interests: gas separation; mixed matrix membranes; biopolymers; hollow fiber membranes; membrane morphology

Special Issue Information

Dear Colleagues,

Membrane technology has been proposed for decades as an alternative in the sustainable intensification of chemical processes, having attained commercial level in liquid filtration, medical, and electrochemical applications. For gas separation, the range of applications is much narrower, with a limited number of applications in natural gas or syngas purification. Although there are several membranes commercially available, a significant gap between laboratory and pilot or larger scale remains for their use in climate change mitigation or energy storage (CCUS) and energy supply. The main reason is the uncertainty of the reproducibility in fabrication and long-term stability performance of the advanced materials that form the membranes.

This Special Issue is a follow-up to the 2018 Special Issue “Mixed Matrix Membranes”, motivated by the gap existing between lab research on mixed matrix membranes materials and the lack of large scale implementation. Mixed matrix membranes consisting of the generation of a new hybrid material by adding small amounts of, usually expensive, advanced materials with specific properties into highly processable polymer materials, may offer the possibility to address that uncertainty.

Mixed matrix membrane technology involves several disciplines, from basic science (physics, chemistry, biology, etc.) to applied science and technology (chemical engineering, mainly), thus this Special Issue will explore the relationship between the structure and function of membrane materials so that they have a chance to prove their worth as the sustainable development solutions that 21st-century society needs.

Prof. Dr. Clara Casado-Coterillo
Dr. Oana David
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 2200 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

  • Membrane fabrication
  • Membrane modification
  • Characterization techniques
  • Flat-sheet membrane
  • Hollow fiber membrane
  • Spinning
  • Filler dispersion
  • Interfacial polymerization
  • Compatibility
  • Gas separation
  • Energy storage
  • Carbon capture and utilization

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Related Special Issue

Published Papers (4 papers)

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Research

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24 pages, 3713 KiB  
Article
Superglassy Polymers to Treat Natural Gas by Hybrid Membrane/Amine Processes: Can Fillers Help?
by Ahmed W. Ameen, Peter M. Budd and Patricia Gorgojo
Membranes 2020, 10(12), 413; https://doi.org/10.3390/membranes10120413 - 10 Dec 2020
Cited by 10 | Viewed by 3708
Abstract
Superglassy polymers have emerged as potential membrane materials for several gas separation applications, including acid gas removal from natural gas. Despite the superior performance shown at laboratory scale, their use at industrial scale is hampered by their large drop in gas permeability over [...] Read more.
Superglassy polymers have emerged as potential membrane materials for several gas separation applications, including acid gas removal from natural gas. Despite the superior performance shown at laboratory scale, their use at industrial scale is hampered by their large drop in gas permeability over time due to physical aging. Several strategies are proposed in the literature to prevent loss of performance, the incorporation of fillers being a successful approach. In this work, we provide a comprehensive economic study on the application of superglassy membranes in a hybrid membrane/amine process for natural gas sweetening. The hybrid process is compared with the more traditional stand-alone amine-absorption technique for a range of membrane gas separation properties (CO2 permeance and CO2/CH4 selectivity), and recommendations for long-term membrane performance are made. These recommendations can drive future research on producing mixed matrix membranes (MMMs) of superglassy polymers with anti-aging properties (i.e., target permeance and selectivity is maintained over time), as thin film nanocomposite membranes (TFNs). For the selected natural gas composition of 28% of acid gas content (8% CO2 and 20% H2S), we have found that a CO2 permeance of 200 GPU and a CO2/CH4 selectivity of 16 is an optimal target. Full article
(This article belongs to the Special Issue Mixed Matrix Membranes II. From Lab Scale towards Application)
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20 pages, 2681 KiB  
Article
Energy Storage Behavior of Lithium-Ion Conducting poly(vinyl alcohol) (PVA): Chitosan(CS)-Based Polymer Blend Electrolyte Membranes: Preparation, Equivalent Circuit Modeling, Ion Transport Parameters, and Dielectric Properties
by Mohamad Brza, Shujahadeen B. Aziz, Salah Raza Saeed, Muhamad H. Hamsan, Siti Rohana Majid, Rebar T. Abdulwahid, Mohd F. Z. Kadir and Ranjdar M. Abdullah
Membranes 2020, 10(12), 381; https://doi.org/10.3390/membranes10120381 - 30 Nov 2020
Cited by 24 | Viewed by 3214
Abstract
Plasticized lithium-ion-based-conducting polymer blend electrolytes based on poly(vinyl alcohol) (PVA):chitosan (CS) polymer was prepared using a solution cast technique. The conductivity of the polymer electrolyte system was found to be 8.457 × 10−4 S/cm, a critical factor for electrochemical device applications. It [...] Read more.
Plasticized lithium-ion-based-conducting polymer blend electrolytes based on poly(vinyl alcohol) (PVA):chitosan (CS) polymer was prepared using a solution cast technique. The conductivity of the polymer electrolyte system was found to be 8.457 × 10−4 S/cm, a critical factor for electrochemical device applications. It is indicated that the number density (n), diffusion coefficient (D), and mobility (μ) of ions are increased with the concentration of glycerol. High values of dielectric constant and dielectric loss were observed at low frequency region. A correlation was found between the dielectric constant and DC conductivity. The achieved transference number of ions (tion) and electrons (te) for the highest conducting plasticized sample were determined to be 0.989 and 0.011, respectively. The electrochemical stability for the highest conducting sample was 1.94 V, indicated by linear sweep voltammetry (LSV). The cyclic voltammetry (CV) response displayed no redox reaction peaks through its entire potential range. Through the constructing electric double-layer capacitor, the energy storage capacity of the highest conducting sample was investigated. All decisive parameters of the EDLC were determined. At the first cycle, the specific capacitance, internal resistance, energy density, and power density were found to be 130 F/g, 80 Ω, 14.5 Wh/kg, and 1100 W/kg, respectively. Full article
(This article belongs to the Special Issue Mixed Matrix Membranes II. From Lab Scale towards Application)
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17 pages, 5259 KiB  
Article
Magnetically Aligned and Enriched Pathways of Zeolitic Imidazolate Framework 8 in Matrimid Mixed Matrix Membranes for Enhanced CO2 Permeability
by Machiel van Essen, Esther Montrée, Menno Houben, Zandrie Borneman and Kitty Nijmeijer
Membranes 2020, 10(7), 155; https://doi.org/10.3390/membranes10070155 - 17 Jul 2020
Cited by 14 | Viewed by 3853
Abstract
Metal-organic frameworks (MOFs) as additives in mixed matrix membranes (MMMs) for gas separation have gained significant attention over the past decades. Many design parameters have been investigated for MOF based MMMs, but the spatial distribution of the MOF throughout MMMs lacks investigation. Therefore, [...] Read more.
Metal-organic frameworks (MOFs) as additives in mixed matrix membranes (MMMs) for gas separation have gained significant attention over the past decades. Many design parameters have been investigated for MOF based MMMs, but the spatial distribution of the MOF throughout MMMs lacks investigation. Therefore, magnetically aligned and enriched pathways of zeolitic imidazolate framework 8 (ZIF−8) in Matrimid MMMs were synthesized and investigated by means of their N2 and CO2 permeability. Magnetic ZIF−8 (m–ZIF−8) was synthesized by incorporating Fe3O4 in the ZIF−8 structure. The presence of Fe3O4 in m–ZIF−8 showed a decrease in surface area and N2 and CO2 uptake, with respect to pure ZIF−8. Alignment of m–ZIF−8 in Matrimid showed the presence of enriched pathways of m–ZIF−8 through the MMMs. At 10 wt.% m–ZIF−8 incorporation, no effect of alignment was observed for the N2 and CO2 permeability, which was ascribed anon-ideal tortuous alignment. However, alignment of 20 wt.% m–ZIF−8 in Matrimid showed to increase the CO2 diffusivity and permeability (19%) at 7 bar, while no loss in ideal selectivity was observed, with respect to homogeneously dispersed m–ZIF−8 membranes. Thus, the alignment of MOF particles throughout the matrix was shown to enhance the CO2 permeability at a certain weight content of MOF. Full article
(This article belongs to the Special Issue Mixed Matrix Membranes II. From Lab Scale towards Application)
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Review

Jump to: Research

31 pages, 5692 KiB  
Review
Metal Organic Framework Based Polymer Mixed Matrix Membranes: Review on Applications in Water Purification
by Asmaa Elrasheedy, Norhan Nady, Mohamed Bassyouni and Ahmed El-Shazly
Membranes 2019, 9(7), 88; https://doi.org/10.3390/membranes9070088 - 19 Jul 2019
Cited by 113 | Viewed by 10662
Abstract
Polymeric membranes have been widely employed for water purification applications. However, the trade-off issue between the selectivity and permeability has limited its use in various applications. Mixed matrix membranes (MMMs) were introduced to overcome this limitation and to enhance the properties and performance [...] Read more.
Polymeric membranes have been widely employed for water purification applications. However, the trade-off issue between the selectivity and permeability has limited its use in various applications. Mixed matrix membranes (MMMs) were introduced to overcome this limitation and to enhance the properties and performance of polymeric membranes by incorporation of fillers such as silica and zeolites. Metal-organic frameworks (MOFs) are a new class of hybrid inorganic–organic materials that are introduced as novel fillers for incorporation in polymeric matrix to form composite membranes for different applications especially water desalination. A major advantage of MOFs over other inorganic fillers is the possibility of preparing different structures with different pore sizes and functionalities, which are designed especially for a targeted application. Different MMMs fabrication techniques have also been investigated to fabricate MMMs with pronounced properties for a specific application. Synthesis techniques include blending, layer-by-layer (LBL), gelatin-assisted seed growth and in situ growth that proved to give the most homogenous dispersion of MOFs within the organic matrix. It was found that the ideal filler loading of MOFs in different polymeric matrices is 10%, increasing the filler loading beyond this value led to formation of aggregates that significantly decreased the MOFs-MMMs performance. Despite the many merits of MOFs-MMMs, the main challenge facing the upscaling and wide commercial application of MOFs-MMMs is the difficult synthesis conditions of the MOFs itself and the stability and sustainability of MOFs-MMMs performance. Investigation of new MOFs and MOFs-MMMs synthesis techniques should be carried out for further industrial applications. Among these new synthesis methods, green MOFs synthesis has been highlighted as low cost, renewable, environmentally friendly and recyclable starting materials for MOFs-MMMs. This paper will focus on the investigation of the effect of different recently introduced MOFs on the performance of MOFs-MMMs in water purification applications. Full article
(This article belongs to the Special Issue Mixed Matrix Membranes II. From Lab Scale towards Application)
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