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Membranes
Special Issues
Membrane-Based Solutions for Industrial and Environmental Clean-Up
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Membrane-Based Solutions for Industrial and Environmental Clean-Up

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

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 5910

Special Issue Editor

Dr. Maria Inês Gameiro de Sá Almeida

E-Mail Website
Guest Editor
School of Chemistry, University of Melbourne, Parkville, Melbourne, VIC 3010, Australia
Interests: membrane extraction based on polymer inclusion membranes; membrane-based passive sampling; paper-based microfluidics; flow analysis; environmental monitoring and clean-up
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The constant increase of industrialization and urbanization worldwide has been putting enormous pressure on the environment. As water availability decreases and its consumption increases, the creation of sustainable solutions for the conservation and recycling of such an essential resource are of utmost importance. Large amounts of contaminated waters are produced daily as a result of anthropogenic activities, and it is thus essential for wastewaters to be cleaned up in order to be reused or disposed of safely into the environment.

Precipitation, adsorption, and ion exchange are examples of conventional separation techniques commonly used for the treatment of wastewaters. However, such techniques are often cost-ineffective or environmentally unfriendly, and new solutions are thus required. Membrane-based technologies have been shown to provide a viable alternative to conventional methods while overcoming their limitations.

This Special Issue aims to provide a comprehensive overview of novel membrane-based solutions recently developed for the clean-up of waters contaminated by industrial, agricultural or domestic activities (e.g., industrial effluents, sewage, stormwater) by removing or separating chemical species/pollutants, so that they can be either reused or disposed of safely into the environment. All types of membranes, namely, porous/nonporous, liquid/solid/semisolid, polymeric/ceramic, hydrophilic/hydrophobic or flat sheet/hollow-fiber membranes, are of interest to this Special Issue, provided that their application consists of a new, effective, low-cost, low-energy consumption, and/or eco-friendly solution for the chemical clean-up of contaminated waters.

Dr. Maria Inês Gameiro de Sá Almeida
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 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

  • Membrane
  • Wastewater treatment
  • Water recycling
  • Chemical separation/removal
  • Pollutant(s) clean-up

Published Papers (2 papers)

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Research

24 pages, 3475 KiB  
Article
Support Vector Regression Modelling of an Aerobic Granular Sludge in Sequential Batch Reactor
by Nur Sakinah Ahmad Yasmin, Norhaliza Abdul Wahab, Fatimah Sham Ismail, Mu’azu Jibrin Musa, Mohd Hakim Ab Halim and Aznah Nor Anuar
Membranes 2021, 11(8), 554; https://doi.org/10.3390/membranes11080554 - 22 Jul 2021
Cited by 7 | Viewed by 2036
Abstract
Support vector regression (SVR) models have been designed to predict the concentration of chemical oxygen demand in sequential batch reactors under high temperatures. The complex internal interaction between the sludge characteristics and their influent were used to develop the models. The prediction becomes [...] Read more.
Support vector regression (SVR) models have been designed to predict the concentration of chemical oxygen demand in sequential batch reactors under high temperatures. The complex internal interaction between the sludge characteristics and their influent were used to develop the models. The prediction becomes harder when dealing with a limited dataset due to the limitation of the experimental works. A radial basis function algorithm with selected kernel parameters of cost and gamma was used to developed SVR models. The kernel parameters were selected by using a grid search method and were further optimized by using particle swarm optimization and genetic algorithm. The SVR models were then compared with an artificial neural network. The prediction results R2 were within >90% for all predicted concentration of COD. The results showed the potential of SVR for simulating the complex aerobic granulation process and providing an excellent tool to help predict the behaviour in aerobic granular reactors of wastewater treatment. Full article
(This article belongs to the Special Issue Membrane-Based Solutions for Industrial and Environmental Clean-Up)
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18 pages, 2651 KiB  
Article
Dual-Functional Phosphorene Nanocomposite Membranes for the Treatment of Perfluorinated Water: An Investigation of Perfluorooctanoic Acid Removal via Filtration Combined with Ultraviolet Irradiation or Oxygenation
by Joyner Eke, Lillian Banks, M. Abdul Mottaleb, Andrew J. Morris, Olga V. Tsyusko and Isabel C. Escobar
Membranes 2021, 11(1), 18; https://doi.org/10.3390/membranes11010018 - 25 Dec 2020
Cited by 11 | Viewed by 3212
Abstract
Nanomaterials with tunable properties show promise because of their size-dependent electronic structure and controllable physical properties. The purpose of this research was to develop and validate environmentally safe nanomaterial-based approach for treatment of drinking water including removal and degradation of per- and polyfluorinated [...] Read more.
Nanomaterials with tunable properties show promise because of their size-dependent electronic structure and controllable physical properties. The purpose of this research was to develop and validate environmentally safe nanomaterial-based approach for treatment of drinking water including removal and degradation of per- and polyfluorinated chemicals (PFAS). PFAS are surfactant chemicals with broad uses that are now recognized as contaminants with a significant risk to human health. They are commonly used in household and industrial products. They are extremely persistent in the environment because they possess both hydrophobic fluorine-saturated carbon chains and hydrophilic functional groups, along with being oleophobic. Traditional drinking water treatment technologies are usually ineffective for the removal of PFAS from contaminated waters, because they are normally present in exiguous concentrations and have unique properties that make them persistent. Therefore, there is a critical need for safe and efficient remediation methods for PFAS, particularly in drinking water. The proposed novel approach has also a potential application for decreasing PFAS background levels in analytical systems. In this study, nanocomposite membranes composed of sulfonated poly ether ether ketone (SPEEK) and two-dimensional phosphorene were fabricated, and they obtained on average 99% rejection of perfluorooctanoic acid (PFOA) alongside with a 99% removal from the PFOA that accumulated on surface of the membrane. The removal of PFOA accumulated on the membrane surface achieved 99% after the membranes were treated with ultraviolet (UV) photolysis and liquid aerobic oxidation. Full article
(This article belongs to the Special Issue Membrane-Based Solutions for Industrial and Environmental Clean-Up)
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