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Advanced Functional Materials for Water Pollution Control and Wastewater Treatment

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: 20 June 2026 | Viewed by 425

Special Issue Editors


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Guest Editor
College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, China
Interests: solid waste treatment; wastewater treatment; environmental behavior; risk control; ARGs

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Guest Editor
School of Environment, Southern University of Science and Technology, Shenzhen, China
Interests: water pollution control; wastewater treatment; environmental remediation; stable isotope; eutrophication; resource recovery

Special Issue Information

Dear Colleagues,

Efficient and sustainable water pollution control remains one of the most urgent global environmental challenges. With the rapid emergence of recalcitrant organic contaminants, heavy metals, antibiotics, microplastics, PFAS, and complex industrial effluents, conventional treatment technologies often face limitations in selectivity, efficiency, and cost-effectiveness. In recent years, advanced functional materials—ranging from engineered nanomaterials, catalytic composites, biochar derivatives, MOFs/COFs, and redox-active materials to engineered bio-materials, living materials, and smart responsive platforms—have shown unprecedented potential for addressing these challenges through enhanced adsorption, catalysis, redox transformation, membrane separation, and biological synergy.

This Special Issue aims to bring together cutting-edge research and transformative advances in functional materials for water pollution control and wastewater treatment. We welcome studies that develop innovative materials, elucidate interfacial mechanisms, integrate materials into treatment systems, or demonstrate pilot-scale and practical applications. Emphasis will be placed on materials-enabled solutions that promote efficiency, selectivity, sustainability, and environmental safety.

The scope of this Special Issue includes, but is not limited to, the following: Advanced adsorbents and catalytic materials for emerging pollutants (e.g., nanomaterials, biochar-based composites, MOF/COF hybrids, and redox catalysts).

  •  Photocatalytic, electrocatalytic, and sonocatalytic materials for degradation and mineralization.
  •  Functional membranes and membrane-assisted processes (nanofiltration, forward osmosis, and membrane distillation).
  •  Magnetic, hierarchical, and multifunctional materials enabling enhanced separation and recovery.
  •  Bio-inspired and living functional materials (e.g., enzyme-embedded systems, microalgae–bacteria composites, and 3D-printed bioactive materials).
  •  Material–microbe interactions for pollutant transformation, nutrient recovery, and ARG mitigation.
  •  Advanced materials for industrial wastewater treatment (textile, pharmaceutical, petrochemical, agricultural, and landfill leachate).
  •  Mechanistic studies on adsorption, redox transformation, interfacial reactions, and catalytic pathways.
  •  Sustainability assessment, environmental impacts, and safety evaluation of functional materials.
  •  Pilot-scale demonstrations and engineering applications integrating advanced materials into treatment processes.

This Special Issue provides a platform for researchers, engineers, and industry practitioners to showcase recent scientific breakthroughs and technological innovations that push the boundaries of materials-enabled water treatment. We welcome original research articles, critical reviews, perspectives, and mini reviews that address the challenges and opportunities emerging at the interface of materials science, environmental chemistry, and water treatment engineering.

Dr. Mengmeng Wang
Dr. Lingchao Kong
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 250 words) can be sent to the Editorial Office for assessment.

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. Water 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 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

  • functional materials
  • water pollution control
  • wastewater treatment
  • nanomaterials
  • catalytic degradation
  • photocatalysis

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Published Papers (1 paper)

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Research

20 pages, 2342 KB  
Article
Reactivation and Nitrogen Removal Performance of Idle Anammox Sludge Enhanced by Rape Straw Biochar
by Qiang Chen, Yi Ding, Zhicheng Xu, Haibin Zhou, Ruoyu Zhang, Jiao Chen, Yixin Lu and Wenlai Xu
Water 2026, 18(1), 18; https://doi.org/10.3390/w18010018 - 20 Dec 2025
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Abstract
Low reactivation efficiency of idle anaerobic ammonia oxidation (anammox) sludge hinders its reapplication. To address this issue, rape straw biochar (RSB) was added in the reactivation process of idle anammox sludge, and its effects on the nitrogen transformation and sludge characteristics were investigated, [...] Read more.
Low reactivation efficiency of idle anaerobic ammonia oxidation (anammox) sludge hinders its reapplication. To address this issue, rape straw biochar (RSB) was added in the reactivation process of idle anammox sludge, and its effects on the nitrogen transformation and sludge characteristics were investigated, and the mechanism of RSB to enhance the reactivation performance was explored. Results indicated that adding 5 g/L RSB for 35 days successfully reactivated anammox sludge that had been idle for 270 days. The reactivation time was reduced by 34% compared to the control without RSB. During the stable operation period, the average TN removal efficiency reached 90.6%, and the sludge exhibited higher activity. After completion of reactivation, the specific surface area, total pore volume, and average pore diameter of RSB decreased by 59.4%, 66.9%, and 55.2%, respectively, compared with that before reactivation, and the carbon–oxygen functional groups also changed. RSB not only provided a habitat for the enriched growth of nitrogen transforming functional flora but also possessed the potential to supply sufficient electron donors and acceptors for the nitrogen transforming process, which promoted the synergistic removal of nitrate by denitrification, resulting in an effective enhancement of reactivation efficiency and nitrogen removal performance. The addition of RSB provides a novel strategy to enhance the reactivation efficiency of idle anammox sludge, which is of positive significance in promoting its efficient reuse and stable operation. Full article
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