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Separations
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Recent Advances in Membrane Technologies for Water/Wastewater Treatment
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Recent Advances in Membrane Technologies for Water/Wastewater Treatment

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Environmental Separations".

Deadline for manuscript submissions: closed (28 October 2023) | Viewed by 2165

Special Issue Editors

Dr. Zhenghua Zhang

E-Mail Website
Guest Editor
Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
Interests: membranes; heterogeneous catalysis; water/wastewater treatment
Dr. Yu Yang

E-Mail Website
Guest Editor
School of Environment, Beijing Normal University No 19, Xinjiekouwai Street, Beijing, China 100875
Interests: water pollution control; membrane filtration; membrane fouling control
Special Issues, Collections and Topics in MDPI journals
Dr. Changkun Liu

E-Mail Website
Guest Editor
College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518061, China
Interests: membranes; adsorption; water treatment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Freshwater scarcity and inadequate access to clean water globally are major issues for the 21st century. Water pollution is mainly caused by anthropogenic activities and can disrupt the smooth functioning of economic activities (e.g., agriculture and industries) as well as human health. As such, clean water (SDG6) and good health (SDG3) are included in the UN Sustainable Development Goals. Compared to conventional water/wastewater treatment technologies such as coagulation, sedimentation, adsorption, membrane-based technologies have been recognized as an environmentally friendly and energy-efficient process for effective pollutant removal and clean water production. As a competitive technology for water and wastewater treatment, membrane technologies have experienced rapid development in recent decades.

This Special Issue on “Recent Advances in Membrane Technologies for Water/Wastewater Treatment” seeks high-quality works focusing on the latest novel advances of membrane technology for water and wastewater treatment. Topics include, but are not limited to:

  • Membrane fabrication;
  • Water and wastewater treatment;
  • Membrane application;
  • Modeling for membrane processes;
  • Membrane fouling and cleaning.

Dr. Zhenghua Zhang
Dr. Yu Yang
Dr. Changkun Liu
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 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. Separations 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 2600 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 process
  • water treatment
  • wastewater treatment
  • membrane fabrication
  • membrane application
  • membrane fouling
  • membrane cleaning

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Published Papers (1 paper)

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Research

13 pages, 3003 KiB  
Article
Mitigation Mechanism of Membrane Fouling in MnFeOx Functionalized Ceramic Membrane Catalyzed Ozonation Process for Treating Natural Surface Water
by Hui Guo, Yanxiao Chi, Yifan Jia, Manman Li, Yuxuan Yang, Haiyong Yao, Kunlun Yang, Zengshuai Zhang, Xueli Ren, Peng Gu and Hengfeng Miao
Separations 2022, 9(11), 372; https://doi.org/10.3390/separations9110372 - 15 Nov 2022
Cited by 2 | Viewed by 1533
Abstract
In order to efficiently remove NOMs in natural surface water and alleviate membrane pollution at the same time, a flat microfiltration ceramic membrane (CM) was modified with MnFeOX (Mn-Fe-CM), and a coagulation–precipitation–sand filtration pretreatment coupled with an in situ ozonation-ceramic membrane filtration [...] Read more.
In order to efficiently remove NOMs in natural surface water and alleviate membrane pollution at the same time, a flat microfiltration ceramic membrane (CM) was modified with MnFeOX (Mn-Fe-CM), and a coagulation–precipitation–sand filtration pretreatment coupled with an in situ ozonation-ceramic membrane filtration system (Pretreatment/O3/Mn-Fe-CM) was constructed for this study. The results show that the removal rates of dissolved organic carbon (DOC), specific ultraviolet absorption (SUVA) and NH4+-N by the Pretreatment/O3/Mn-Fe-CM system were 51.1%, 67.9% and 65.71%, respectively. Macromolecular organic compounds such as aromatic proteins and soluble microbial products (SMPs) were also effectively removed. The working time of the membrane was about twice that in the Pretreatment/CM system without the in situ ozone oxidation, which was measured by the change in transmembrane pressure, proving that membrane fouling was significantly reduced. Finally, based on the SEM, AFM and other characterization results, it was concluded that the main mitigation mechanisms of membrane fouling in the Pretreatment/O3/Mn-Fe-CM system was as follows: (1) pretreatment could remove part of DOC and SUVA to reduce their subsequent entrapment on a membrane surface; (2) a certain amount of shear force generated by O3 aeration can reduce the adhesion of pollutants; (3) the loaded MnFeOX with a higher catalytic ability produced a smoother active layer on the surface of the ceramic membrane, which was conducive in reducing the contact among Mn-Fe-CM, O3 and pollutants, thus increasing the proportion of reversible pollution and further reducing the adhesion of pollutants; (4) Mn-Fe-CM catalyzed O3 to produce ·OH to degrade the pollutants adsorbed on the membrane surface into smaller molecular organic matter, which enabled them pass through the membrane pores, reducing their accumulation on the membrane surface. Full article
(This article belongs to the Special Issue Recent Advances in Membrane Technologies for Water/Wastewater Treatment)
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