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Special Issue "New Trends in Membrane Preparation and Applications"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 31 October 2019

Special Issue Editors

Guest Editor
Dr. Alberto Figoli

Institute on Membrane Technology (CNR-ITM), 87036 (Rende), Italy
Website | E-Mail
Interests: polymeric membranes; hollow-fibers; membrane preparation; membrane characterization; pervaporation; antifouling coatings; self-cleaning membranes; ultra-micro filtration; sustainable membrane preparation
Guest Editor
Dr. Francesco Galiano

Institute on Membrane Technology (CNR-ITM), 87036 (Rende), Italy
Website | E-Mail
Interests: polymeric membranes; hollow-fibers; membrane preparation; membrane characterization; pervaporation; antifouling coatings; self-cleaning membranes; ultra-micro filtration

Special Issue Information

Dear Colleagues,

Over the last decades, we have witnessed a continuous increasing interest in the production and utilization of polymeric membranes in a wide variety of applications. The possibility of producing membrane with different tailored structures and properties allows their use in the most disparate processes. Therefore, membranes can be prepared using a broad spectrum of techniques, depending on both the membrane material adopted and the final application. Based on the preparation techniques and conditions selected, in fact, it is possible to vary the membrane morphology and properties.

Today, membranes represent a very well-established technology in desalination (e.g., reverse Osmosis), biomedical applications (e.g., hemodialysis) and wastewater treatment (e.g., membrane bio-reactor), recovery of added value products by fractionation and concentrations applications (e.g., pressure-driven membrane processes), and in gas and vapor separation (e.g., gas membranes or membrane contactors).

In this Special Issue, researchers are invited to contribute original research papers, as well as review articles, related to the preparation, characterization, and application of polymeric, mixed matrix, and inorganic membranes, in both flat and hollow-fiber configuration. We are particularly interested in articles focusing on innovative aspects in the preparation and application of membranes with tailored and unique features. Potential topics include, but are not limited to:

  • Advanced membrane preparation techniques;
  • Membrane functionalization and application;
  • Sustainability in membrane preparation;
  • Study of the effect of operating conditions and process parameters on membrane morphology and performance;
  • Application of high performing membranes in selected membrane processes.

Dr. Alberto Figoli
Dr. Francesco Galiano
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 papers will be 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. Molecules is an international peer-reviewed open access semimonthly 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 1800 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

  • Polymeric membranes
  • Inorganic membranes
  • Mixed matrix membranes
  • Membrane preparation
  • Membrane characterization
  • Hollow fibers
  • Water and Wastewater treatment
  • Gas and Vapor Separation
  • New solvents in membrane preparation
  • New polymers in membrane preparation

Published Papers (2 papers)

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Research

Open AccessFeature PaperCommunication
First Report on a Solvent-Free Preparation of Polymer Inclusion Membranes with an Ionic Liquid
Molecules 2019, 24(10), 1845; https://doi.org/10.3390/molecules24101845
Received: 21 March 2019 / Revised: 5 May 2019 / Accepted: 11 May 2019 / Published: 14 May 2019
PDF Full-text (2961 KB) | HTML Full-text | XML Full-text
Abstract
A novel and environmentally-friendly procedure for the preparation of polymer inclusion membranes (PIMs) containing an ionic liquid is presented for the first time. Traditionally, PIMs are prepared by a solvent casting method with the use of harmful organic solvents. Here we report a [...] Read more.
A novel and environmentally-friendly procedure for the preparation of polymer inclusion membranes (PIMs) containing an ionic liquid is presented for the first time. Traditionally, PIMs are prepared by a solvent casting method with the use of harmful organic solvents. Here we report a new solvent-free procedure based on a thermal-compression technique which involve the melting of the components of the PIM and the application of a high pressure to the melted specimen to form a flat-sheet film. In our study, we have tested different polymers, such as two cellulose derivatives as well as two thermoplastic polymers, polyurethane (TPU) and poli ε-caprolactone (PCL). The ionic liquid (IL) trioctylmethylammonium chloride (Aliquat 336) has been used to produce PIMs with a fixed composition of 70% polymer–30% IL (w/w). Both TPU and PCL polymers provide successful membranes, which have been thoroughly characterized. PIMs based on the polymer PCL showed a high stability. To test whether the properties of the IL were affected by the preparation conditions, the extraction ability of Aliquat 336 was investigated for both PCL and TPU membranes in terms of Cr(VI) extraction. Satisfactory values (90% extraction) were obtained for both membranes tested, showing this novel procedure as a green alternative for the preparation of PIMs with ILs. Full article
(This article belongs to the Special Issue New Trends in Membrane Preparation and Applications)
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Open AccessArticle
Experimental Evaluation of the Thermal Polarization in Direct Contact Membrane Distillation Using Electrospun Nanofiber Membranes Doped With Molecular Probes
Molecules 2019, 24(3), 638; https://doi.org/10.3390/molecules24030638
Received: 22 December 2018 / Revised: 30 January 2019 / Accepted: 1 February 2019 / Published: 12 February 2019
Cited by 1 | PDF Full-text (3069 KB) | HTML Full-text | XML Full-text
Abstract
Membrane distillation (MD) has recently gained considerable attention as a valid process for the production of fresh-water due to its ability to exploit low grade waste heat for operation and to ensure a nearly feed concentration-independent production of high-purity distillate. Limitations have been [...] Read more.
Membrane distillation (MD) has recently gained considerable attention as a valid process for the production of fresh-water due to its ability to exploit low grade waste heat for operation and to ensure a nearly feed concentration-independent production of high-purity distillate. Limitations have been related to polarization phenomena negatively affecting the thermal efficiency of the process and, as a consequence, its productivity. Several theoretical models have been developed to predict the impact of the operating conditions of the process on the thermal polarization, but there is a lack of experimental validation. In this study, electrospun nanofiber membranes (ENMs) made of Poly(vinylidene fluoride) (PVDF) and doped with (1, 10-phenanthroline) ruthenium (II) Ru(phen)3 were tested at different operating conditions (i.e., temperature and velocity of the feed) in direct contact membrane distillation (DCMD). The temperature sensitive luminophore, Ru(phen)3, allowed the on-line and non-invasive mapping of the temperature at the membrane surface during the process and the experimental evaluation of the effect of the temperature and velocity of the feed on the thermal polarization. Full article
(This article belongs to the Special Issue New Trends in Membrane Preparation and Applications)
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