Membranes for Removal of Micropollutants and Emerging Contaminants from Water

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

Deadline for manuscript submissions: closed (30 January 2023) | Viewed by 3651

Special Issue Editor


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Guest Editor
Department for Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, 21000 Novi Sad, Serbia
Interests: GC/MS analysis; water treatment for organic micropollutants removal; adsorption; membrane filtration; hybrid processes; organic micropollutants in water cycle

Special Issue Information

Dear Colleagues,

The discovery of chloroform in disinfected water triggered the start of the research on micropollutants in 1974. Following the tremendous development of analytical techniques (especially gas and liquid chromatography coupled with mass spectrometry), we were able to detect a whole universe of micropollutants in wastewater, ambient waters and tap water. Even though the regulatory actions were successfully undertaken, the presence of new disinfection byproducts, some pharmaceuticals and personal care products, per- and polyfluoroalkyl substances, microplastics and other relevant contaminants of emerging concern still requires research on efficient solutions for their removal. Remarkable parts of the removal related puzzle are the rapidly developing membrane technology applications in both advanced wastewater and drinking water treatment. In addition to the highly relevant and efficient elimination of bacteria and viruses, a considerable number of organic and inorganic compounds can be successfully removed if high-pressure membrane technology is applied, or if microfiltration and ultrafiltration are used in hybrid processes, where different types of membrane filtration are combined with adsorption and coagulation in various process configurations. Just recently, German Society for Membrane Technology published a position paper where the challenge of antibiotic resistance is also considered as an imperative to respond. To make further progress, new knowledge is needed, as is the systematization of existing research results. Some of the remaining gaps are related to complex interactions with water matrix, membrane materials, processes optimization in different configurations, and waste flow treatment and disposal.   

This Special Issue aims to provide a platform for sharing knowledge about the efficiencies of micropollutant and emerging contaminant removal, and to improve our understanding of their interactions during both wastewater and drinking water treatment strategies which include various membrane processes. This should help us to better manage the complex systems in the future, since the use of membrane technology seems inevitable in order to successfully overcome water resources deterioration and water shortage without compromising the quality of the water we use for different purposes.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Fate of inorganic and organic micropollutants and emerging contaminants in water treatment streams that include membrane filtration (both advanced wastewater treatment and innovative drinking water treatment studies are welcome, as well as lab- and large-scale research). Studies on water reuse including membrane filtration are also welcome.
  • Development and testing of new membrane materials for the removal of micropollutants and emerging contaminants, which may also include research on their interactions.
  • Research on hybrid membrane processes relevant for the removal of micropollutants and emerging contaminants.
  • Mechanisms of interactions between micropollutants, water matrix constituents, membrane and other process materials, including QSAR studies.
  • Research in the field of waste flow treatment and disposal.

Prof. Dr. Ivana Ivancev-Tumbas
Guest Editor

Manuscript Submission Information

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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

  • micropollutants
  • emerging contaminants
  • microplastics
  • antibiotic resistance
  • membrane filtration
  • (ad)sorption
  • hybrid processes
  • new membrane materials
  • drinking water treatment
  • wastewater treatment

Published Papers (2 papers)

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Research

23 pages, 4080 KiB  
Article
Cationised Fibre-Based Cellulose Multi-Layer Membranes for Sterile and High-Flow Bacteria Retention and Inactivation
by Vanja Kokol, Monika Kos, Vera Vivod and Nina Gunde-Cimerman
Membranes 2023, 13(3), 284; https://doi.org/10.3390/membranes13030284 - 27 Feb 2023
Cited by 3 | Viewed by 1300
Abstract
Low-cost, readily available, or even disposable membranes in water purification or downstream biopharma processes are becoming attractive alternatives to expensive polymeric columns or filters. In this article, the potential of microfiltration membranes prepared from differently orientated viscose fibre slivers, infused with ultrafine quaternised [...] Read more.
Low-cost, readily available, or even disposable membranes in water purification or downstream biopharma processes are becoming attractive alternatives to expensive polymeric columns or filters. In this article, the potential of microfiltration membranes prepared from differently orientated viscose fibre slivers, infused with ultrafine quaternised (qCNF) and amino-hydrophobised (aCNF) cellulose nanofibrils, were investigated for capturing and deactivating the bacteria from water during vacuum filtration. The morphology and capturing mechanism of the single- and multi-layer structured membranes were evaluated using microscopic imaging and colloidal particles. They were assessed for antibacterial efficacy and the retention of selected bacterial species (Escherichia coli, Staphylococcus aureus, Micrococcus luteus), differing in the cell envelope structure, hydrodynamic biovolume (shape and size) and their clustering. The aCNF increased biocidal efficacy significantly when compared to qCNF-integrated membrane, although the latter retained bacteria equally effectively by a thicker multi-layer structured membrane. The retention of bacterial cells occurred through electrostatic and hydrophobic interactions, as well as via interfibrous pore diffusion, depending on their physicochemical properties. For all bacterial strains, the highest retention (up to 100% or log 6 reduction) at >50 L/h∗bar∗m2 flow rate was achieved with a 4-layer gradient-structured membrane containing different aCNF content, thereby matching the performance of industrial polymeric filters used for removing bacteria. Full article
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22 pages, 3798 KiB  
Article
Ozone Diffusion through a Hollow Fiber Membrane Contactor for Pharmaceuticals Removal and Bromate Minimization
by Alice Schmitt, Julie Mendret, Hani Cheikho and Stephan Brosillon
Membranes 2023, 13(2), 171; https://doi.org/10.3390/membranes13020171 - 31 Jan 2023
Cited by 2 | Viewed by 1979
Abstract
Recently, ozonation has been advocated as a solution to tackle emerging contaminants. Hollow fiber membrane contactors (HFMC) have a lower residual ozone concentration than bubble reactors that could limit the formation of potential ozonation by-products, especially bromates that are regulated in drinking water. [...] Read more.
Recently, ozonation has been advocated as a solution to tackle emerging contaminants. Hollow fiber membrane contactors (HFMC) have a lower residual ozone concentration than bubble reactors that could limit the formation of potential ozonation by-products, especially bromates that are regulated in drinking water. The aim of this study was to evaluate ozonation with HFMC for pharmaceutical abatement and bromate minimization compared to bubble columns in wastewater. A HFMC, composed of 65 polytetrafluoroethylene hollow fibers with a 0.45 mm/0.87 mm inner/external diameter and a 0.107 m² exchange surface, was used for the ozonation of real-treated wastewater spiked with 2 µM of p-chlorobenzoic acid (p-CBA) and 3 mg.L−1 of bromide. p-CBA was tracked to monitor the production of strongly-oxidant hydroxyl radicals from the decomposition of the molecular ozone. At 100% p-CBA abatement, 1600 µg.L−1 of bromate was formed with the HFMC, whereas 3486 µg.L−1 was formed with the bubble column. These results demonstrate that HFMC can produce a significant amount of hydroxyl radicals while limiting bromate formation in real-treated wastewater. The test water was also spiked with carbamazepine and sulfamethoxazole to evaluate the abatement efficiency of the process. Short contact times (approximately 2s) achieved high rates of pharmaceuticals removal without bromate formation. Full article
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