Advanced Membrane-Based Desalination Technologies

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

Deadline for manuscript submissions: closed (25 March 2023) | Viewed by 2606

Special Issue Editors


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Guest Editor
UNESCO Centre for Membrane Science and Technology, University of New South Wales, Sydney, Australia
Interests: chemical engineering; process design; molecular simulation; nanostructures; separation technologies
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Guest Editor
Computational Biology and Chemistry Group (CBCG), Universal Scientific Education and Research Network (USERN), Tehran 1449614535, Iran
Interests: chemical engineering; process design; molecular simulation; nanostructures; separation technologies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Membrane-based desalination technologies play a tremendous role in freshwater production and chemical separation. Over the years, the performance of current desalination membranes based on thin-film composites and polyamide chemistry has been optimised for a higher water production rate, solute retention, fouling resistance, and stability. More recent breakthroughs in desalination performance have also been found based on emerging technologies, especially in material development and processing. Membrane-based desalination technologies, including the state-of-the-art reverse osmosis (RO) technology, have been demonstrated to be more energy efficient than thermal desalination approaches.

This Special Issue welcomes submissions on original research and technological developments in membrane desalination, including innovations in membrane design, material development, and desalination process design. Related topics include, but are not limited to, carbon-based membranes, brine mining, two-dimensional membranes, ultra-high-pressure reverse osmosis, nanofiltration, electromembrane, ion–ion separation, resource recovery, energy recovery, and renewable-energy-based desalination.

Dr. Amir Razmjou
Dr. Reza Maleki
Guest Editors

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Keywords

  • desalination
  • membrane fabrication
  • reverse osmosis
  • electromembrane
  • nanofiltration
  • brine mining

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Published Papers (1 paper)

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Research

16 pages, 4293 KiB  
Article
Anti-Wetting Performance of an Electrospun PVDF/PVP Membrane Modified by Solvothermal Treatment in Membrane Distillation
by Yubo Xu, Long-Fei Ren, Jun Li, Chengyi Wang, Yangbo Qiu, Jiahui Shao and Yiliang He
Membranes 2023, 13(2), 225; https://doi.org/10.3390/membranes13020225 - 11 Feb 2023
Cited by 1 | Viewed by 2231
Abstract
Membrane distillation (MD) is attractive for water reclamation due to the fact of its unique characteristics. However, membrane wetting becomes an obstacle to its further application. In this paper, a novel hydrophobic polyvinylidene fluoride/poly(vinyl pyrrolidone) (PVDF/PVP) membrane was fabricated by electrospinning and solvothermal [...] Read more.
Membrane distillation (MD) is attractive for water reclamation due to the fact of its unique characteristics. However, membrane wetting becomes an obstacle to its further application. In this paper, a novel hydrophobic polyvinylidene fluoride/poly(vinyl pyrrolidone) (PVDF/PVP) membrane was fabricated by electrospinning and solvothermal treatment. The electrospun membranes prepared by electrospinning showed a multilevel interconnected nanofibrous structure. Then, a solvothermal treatment introduced the micro/nanostructure to the membrane with high roughness (Ra = 598 nm), thereby the water contact angle of the membrane increased to 158.3 ± 2.2°. Owing to the superior hydrophobicity, the membrane presented high resistance to wetting in both NaCl and SDS solutions. Compared to the pristine PVDF membrane, which showed wetting with a flux decline (120 min for 0.05 mM surfactant solution treatment), the prepared membrane showed outstanding stability over 600 min, even in 0.2 mM surfactant solutions. These results confirm a simple method for anti-wetting hydrophobic membrane preparation, which presented universal significance to direct contact membrane distillation (DCMD) for industrial application. Full article
(This article belongs to the Special Issue Advanced Membrane-Based Desalination Technologies)
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