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Special Issue "Sustainability in Membrane Production and Membrane Operations"

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

Deadline for manuscript submissions: 31 October 2019

Special Issue Editor

Guest Editor
Dr. Teresa Poerio

Researcher at Institute on Membrane Technology (ITM)- National Research Council of Italy (CNR) -, Via P. Bucci Cubo 17C, 87036 Rende (CS), Italy
Website | E-Mail
Interests: preparation and characterization of polymeric and inorganic membranes; catalytic and photocatalytic membrane reactors; waste water treatment by membrane processes; integrated membrane systems

Special Issue Information

Dear Colleagues,

The aim of this Special Issue is to collect original research papers or review articles which report the recent efforts and progress obtained in the development of sustainable membrane processes and membrane production. Despite a significant increase of membrane technology in different sectors, membrane-based operations and membrane production processes cannot always be defined as green and sustainable. Indeed, most of the solvents used in membrane production are hazardous to human health and the environment, and the membrane processes present some drawbacks as well, such as high energy consumption, long-term stability, fouling, etc. In this scenario, it is imperative to design operation and preparation processes that consider the following requirements: replacing conventional solvents with greener solvents, exploitation of renewable raw materials, use of degradable material to avoid accumulation in the environment, lower energy consumption, lower waste generation, and reduced plant size, in agreement with the concept of sustainability.

Dr. Teresa Poerio
Guest Editor

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

  • green processes
  • sustainable membrane preparation
  • sustainable membrane processes
  • green solvents
  • degradable materials
  • waste valorisation
  • renewable sources
  • energy consumption

Published Papers (2 papers)

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Research

Open AccessArticle
Three Output Membrane Hydrocyclone: Classification and Filtration
Molecules 2019, 24(6), 1116; https://doi.org/10.3390/molecules24061116
Received: 5 March 2019 / Accepted: 19 March 2019 / Published: 21 March 2019
PDF Full-text (4607 KB) | HTML Full-text | XML Full-text
Abstract
In this study, through simulation and experimental verification, we proposed a novel hydrocyclone in which a tubular ceramic membrane passed through the overflow outlet to the underflow outlet. The centers of overflow and underflow outlets were tubular membranes equipped with an exit of [...] Read more.
In this study, through simulation and experimental verification, we proposed a novel hydrocyclone in which a tubular ceramic membrane passed through the overflow outlet to the underflow outlet. The centers of overflow and underflow outlets were tubular membranes equipped with an exit of outside-in filtration, and the overflow the underflow outlets were shaped into annular (donut shape) exits. Thus, this novel hydrocyclone has three outlets, namely the overflow dilute liquid, the underflow concentrated liquid, and clear filtrate. This system enabled higher dilution of hydrocyclone overflow concentration than that in the traditional system. Furthermore, underflow was more concentrated, and we obtained a clear filtrate. Therefore, this device can simultaneously perform classification and filtration, which is valuable for special liquid recycling. For instance, in wafer cutting fluid recovery in solar energy processes, the fluid with more silicon can function as the overflow, the fluid with more silicon carbide can function as the underflow, and the polyethylene glycol (PEG) organic solvent can function as the clear filtrate. Full article
(This article belongs to the Special Issue Sustainability in Membrane Production and Membrane Operations)
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Graphical abstract

Open AccessArticle
Preparation and Characterization of TiO2-PVDF/PMMA Blend Membranes Using an Alternative Non-Toxic Solvent for UF/MF and Photocatalytic Application
Molecules 2019, 24(4), 724; https://doi.org/10.3390/molecules24040724
Received: 20 January 2019 / Revised: 14 February 2019 / Accepted: 16 February 2019 / Published: 17 February 2019
Cited by 1 | PDF Full-text (5311 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The approach of the present work is based on the use of poly (methylmethacrylate) (PMMA) polymer, which is compatible with PVDF and TiO2 nanoparticles in casting solutions, for the preparation of nano-composites membranes using a safer and more compatible solvent. TiO2 [...] Read more.
The approach of the present work is based on the use of poly (methylmethacrylate) (PMMA) polymer, which is compatible with PVDF and TiO2 nanoparticles in casting solutions, for the preparation of nano-composites membranes using a safer and more compatible solvent. TiO2 embedded poly (vinylidene fluoride) (PVDF)/PMMA photocatalytic membranes were prepared by phase inversion method. A non-solvent induced phase separation (NIPS) coupled with vapor induced phase separation (VIPS) was used to fabricate flat-sheet membranes using a dope solution consisting of PMMA, PVDF, TiO2, and triethyl phosphate (TEP) as an alternative non-toxic solvent. Membrane morphology was examined by scanning electron microscopy (SEM). Backscatter electron detector (BSD) mapping was used to monitor the inter-dispersion of TiO2 in the membrane surface and matrix. The effects of polymer concentration, evaporation time, additives and catalyst amount on the membrane morphology and properties were investigated. Tests on photocatalytic degradation of methylene blue (MB) were also carried out using the membranes entrapped with different concentrations of TiO2. The results of this study showed that nearly 99% MB removal can be easily achieved by photocatalysis using TiO2 immobilized on the membrane matrix. Moreover, it was observed that the quantity of TiO2 plays a significant role in the dye removal. Full article
(This article belongs to the Special Issue Sustainability in Membrane Production and Membrane Operations)
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