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Trends in Effective Removal of Emerging Organic Pollutants from Drinking Water and Wastewater

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water Quality and Contamination".

Deadline for manuscript submissions: 25 September 2025 | Viewed by 493

Special Issue Editors


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Guest Editor
Water Systems and Biotechnology Institute, Faculty of Natural Sciences, Riga Technical University, Riga, Latvia
Interests: drinking water treatment; bacterial growth; water distribution networks; pathogens
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Water Systems and Biotechnology Institute, Faculty of Natural Sciences, Riga Technical University, Riga, Latvia
Interests: drinking water treatment; wastewater treatment; emerging pollutants; organic pollutants

Special Issue Information

Dear Colleagues,

The growth of the human population has led to an increase in pressure to provide safe drinking water. This challenge is complex and closely related to global freshwater scarcity and climate change. Increased standards for environmental protection and waste disposal call for modern technologies for drinking water and wastewater treatment. Organic pollutants, including natural organic matter and emerging organic pollutants of anthropogenic origin, have become a crucial issue, especially in surface water treatment. Endocrine disruptors, antibiotics, and landfill leachate have polluted many water sources through direct discharges or ineffective wastewater treatments.

This Special Issue aims to address emerging knowledge in the presence and removal of organic pollutants, including natural organic matter and anthropogenic organic pollutants from drinking water and wastewater. The scope includes the latest knowledge of organic pollutants in waters (including wastewater), novel methods for drinking water and wastewater treatment, and the removal of organic pollutants. This Special Issue covers coagulants and coagulation aids, membrane technologies, advanced oxidation processes, biological treatments (e.g., with fungi and algae), foam fractionation for removal, natural and emerging organic pollutants, and microplastics. Topics addressing emerging pollutants in drinking water and wastewater are also welcome.

Prof. Dr. Talis Juhna
Dr. Kamila Gruskevica
Guest Editors

Manuscript Submission Information

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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

  • natural organic matter (NOM)
  • emerging organic pollutants
  • persistent organic pollutants
  • microplastics
  • endocrine disruptors
  • antibiotics
  • drinking water
  • wastewater
  • landfill leachate
  • advanced oxidation
  • coagulants and coagulation aids
  • membrane technologies
  • biological treatments (e.g., with fungi and algae)
  • foam fractionation

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Published Papers (1 paper)

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Research

14 pages, 3141 KiB  
Article
Effects of Salinity Level on Microplastic Removal in Simulated Waters Using Agglomeration–Micro-Flotation
by Theerayut Phengsaart, Palot Srichonphaisarn, Worada Khwathichak, Chanatip Bumrungsak, Ilhwan Park, Mayumi Ito, Mylah Villacorte-Tabelin, Carlito Baltazar Tabelin, Sanghee Jeon, Kazutoshi Haga and Onchanok Juntarasakul
Water 2025, 17(9), 1264; https://doi.org/10.3390/w17091264 - 23 Apr 2025
Viewed by 226
Abstract
This study investigates the removal of microplastics (MPs) from simulated freshwater, brackish water, and seawater using a novel agglomeration–micro-flotation technique. This method combines particle size enlargement, facilitated by kerosene as a bridging agent, with bubble size reduction through column flotation to enhance the [...] Read more.
This study investigates the removal of microplastics (MPs) from simulated freshwater, brackish water, and seawater using a novel agglomeration–micro-flotation technique. This method combines particle size enlargement, facilitated by kerosene as a bridging agent, with bubble size reduction through column flotation to enhance the removal rate. Six common MP types—polypropylene (PP), polyethylene (PE), acrylonitrile butadiene styrene (ABS), polystyrene (PS), polyethylene terephthalate (PET), and polyvinyl chloride (PVC)—were evaluated under varying salinity levels and kerosene dosages. Results showed that increasing kerosene dosage significantly improved removal rates, achieving up to ~99% recovery at 10 µL for low- and medium-density MPs (PP, PE, ABS, and PS), while a higher dosage of 30 µL was required for high-density MPs (PET and PVC). Elevated salinity levels (50–100%) promoted bubble stabilization and reduced coalescence, enhancing particle–bubble collisions and the overall flotation performance. This work addresses a key research gap in flotation-based MP removal under saline conditions and highlights the dual benefits of using kerosene—not only to enhance the removal rate but also to enable energy recovery, as both kerosene and plastics are combustible. The proposed technique presents a promising approach for microplastic remediation in aquatic environments, supporting sustainable water treatment and circular resource utilization. Full article
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