From Novel Material Concept to Scalable Membrane Product for Gas Separation

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 October 2021) | Viewed by 6771

Special Issue Editors


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Guest Editor
European Membrane Institute Twente (EMI), Faculty of Science and Technology, University of Twente, P.O. Box 217, 7522NB AE Enschede, The Netherlands
Interests: gas separation; hollow fiber; mixed matrix; carbon membranes

E-Mail Website
Guest Editor
European Membrane Institute Twente (EMI), Faculty of Science and Technology, University of Twente, P.O. Box 217, 7522NB AE Enschede, The Netherlands
Interests: gas separation membranes; polymer synthesis; membrane formation; transport mechanisms
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
European Membrane Institute Twente (EMI), University of Twente, P.O. Box 217, 7522NB AE Enschede, The Netherlands
Interests: gas separation; hollow fiber membranes; plasticization; valorization; scale-up
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Despite the high number of new materials that are annually reported in scientific literature having superior intrinsic separation performance and beating the corresponding upper bounds, practically, the number of materials converted into new commercial products in the membrane gas separation market has been very limited. Unfortunately, most of these materials won’t make it to market, as they cannot be processed into a membrane with a thin separation layer, or they lose their performance once in contact with an actual feed stream. It seems like the drive with most researchers is to obtain the next best data point on the upper bound and no effort is made to make an actual membrane. Nevertheless, the industry is urgently demanding new membrane products with superior performance.

The ones that do make the effort often face the fact that obtaining funding for research in the fabrication of membranes is difficult, as it is not seen as very attractive, which makes it difficult to publish as well. However, we believe that converting it into an actual membrane is just as important as creating the next new material.   

For this reason, we want to encourage researchers to submit manuscripts that demonstrate the transfer from a material concept into an actual membrane with proven gas separation performance, ideally tested at realistic conditions. We hope that this will increase the number of materials that actually make it to market. Besides, it would justify the amount of funding that is used for the development of new membrane materials.

There is no preferred membrane configuration. It can be, but not limited to, an integrally skinned asymmetric polymeric membrane made by the process of phase inversion, a composite membrane in which the thin separation layer is applied by dipcoating, grafting, interfacial polymerization, or any other technique. Other concepts could be a mixed matrix membrane with a thin separation layer, containing, e.g., MOFs, ceramic, metallic or carbon molecular sieve membranes, with proven mechanical properties.  

We invite researchers to submit manuscripts with a special emphasis on, but not limited to, the following:

  • Advances in the membrane fabrication process and approach to obtain scalability
  • Novel approaches for processing materials as membranes for gas separation applications
  • Mixed gas permeation behavior at elevated temperatures and/or pressures
  • The effect of contaminants on the performance of the developed membrane
  • Post-treatment methods to improve the separation performance and/or chemical and thermal stability of the developed membranes
  • Applications such as N2-enrichment, biogas upgrading, natural gas treatment, H2-recovery or purification, olefin/paraffin separation or CO2-capture

Dr. Oguz Karvan
Dr. Alberto Tena
Dr. Tymen Visser
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.

Published Papers (2 papers)

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Research

14 pages, 2099 KiB  
Article
Pilot Plant for the Capture of Ammonia from the Atmosphere of Pig and Poultry Farms Using Gas-Permeable Membrane Technology
by María Soto-Herranz, Mercedes Sánchez-Báscones, Juan Manuel Antolín-Rodríguez and Pablo Martín-Ramos
Membranes 2021, 11(11), 859; https://doi.org/10.3390/membranes11110859 - 7 Nov 2021
Cited by 6 | Viewed by 2963
Abstract
Gas-permeable membrane (GPM) technology is a possible solution to reduce ammonia (NH3) emissions from livestock housing. This paper presents the results obtained with an NH3-capture prototype based on the use of expanded polytetrafluoroethylene (ePTFE) membranes in real conditions in [...] Read more.
Gas-permeable membrane (GPM) technology is a possible solution to reduce ammonia (NH3) emissions from livestock housing. This paper presents the results obtained with an NH3-capture prototype based on the use of expanded polytetrafluoroethylene (ePTFE) membranes in real conditions in a gestating sow house and a free-range laying hen house, comparing them with the results obtained in controlled laboratory conditions for the same type of waste. The NH3 present in the air of the livestock housing was captured by reaction with an acidic solution flowing inside the membranes. The periods of continuous operation of the pilot plant were 232 days at the pig farm and 256 days at the poultry farm. The NH3 recovery rate at the end of those periods was 2.3 and 0.4 g TAN·m−2·d−1 in the pig and the poultry farms, respectively. The limiting factor for the capture process was the NH3 concentration in the air, with the highest recovery occurring in the most concentrated atmosphere. Differences in NH3 capture were observed between seasons and farms, with capture efficiencies of 1.62 and 0.33 g·m−2·d−1 in summer and 3.85 and 1.20 g·m−2·d−1 in winter for pig and poultry farms, respectively. The observed differences were mainly due to the higher ventilation frequency in the summer months, which resulted in a lower NH3 concentration inside the houses compared to the winter months. This is especially important when considering the real applicability of this technology. The results obtained suggest that GPM technology holds promise for limiting NH3 emissions from livestock housing with NH3 ambient concentrations close to 20 ppm or as part of manure storage facilities, given that it allows for recovery of nitrogen in a stable and concentrated solution, which can be used as a fertilizer. Full article
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17 pages, 3178 KiB  
Article
Improved CO2/CH4 Separation Properties of Cellulose Triacetate Mixed–Matrix Membranes with CeO2@GO Hybrid Fillers
by Chhabilal Regmi, Saeed Ashtiani, Zdeněk Sofer and Karel Friess
Membranes 2021, 11(10), 777; https://doi.org/10.3390/membranes11100777 - 11 Oct 2021
Cited by 12 | Viewed by 2478
Abstract
The study of the effects associated with the compatibility of the components of the hybrid filler with polymer matrix, which ultimately decide on achieving mixed matrix membranes (MMMs) with better gas separation properties, is essential. Herein, a facile solution casting process of simple [...] Read more.
The study of the effects associated with the compatibility of the components of the hybrid filler with polymer matrix, which ultimately decide on achieving mixed matrix membranes (MMMs) with better gas separation properties, is essential. Herein, a facile solution casting process of simple incorporating CeO2@GO hybrid inorganic filler material is implemented. Significant improvements in material and physico-chemical properties of the synthesized membranes were observed by SEM, XRD, TGA, and stress-strain measurements. Usage of graphene oxide (GO) with polar groups on the surface enabled forming bonds with ceria (CeO2) nanoparticles and CTA polymer and provided the homogeneous dispersion of the nanofillers in the hybrid MMMs. Moreover, increasing GO loading concentration enhanced both gas permeation in MMMs and CO2 gas uptakes. The best performance was achieved by the membrane containing 7 wt.% of GO with CO2 permeability of 10.14 Barrer and CO2/CH4 selectivity 50.7. This increase in selectivity is almost fifteen folds higher than the CTA-CeO2 membrane sample, suggesting the detrimental effect of GO for enhancing the selectivity property of the MMMs. Hence, a favorable synergistic effect of CeO2@GO hybrid fillers on gas separation performance is observed, propounding the efficient and feasible strategy of using hybrid fillers in the membrane for the potential biogas upgrading process. Full article
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