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Water Pollution Assessment, Control, and Resource Recovery
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Water Pollution Assessment, Control, and Resource Recovery

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

Deadline for manuscript submissions: 30 September 2026 | Viewed by 1073

Special Issue Editor

Prof. Dr. Aleksandra Drizo

E-Mail Website
Guest Editor
Sustainability Science and Engineering Program, International College, Tunghai University, Taichung City, Taiwan
Interests: water pollution prevention and control; water quality assessment and monitoring; sustainable water management; wastewater and water treatment technologies; nutrient recycling and recovery; resource recovery from wastewater; circular economy in water systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Water pollution resulting from industrial discharges, agricultural runoff, urban effluents, and emerging contaminants remains a critical challenge to ecosystem and human health worldwide. This Special Issue aims to bring together cutting-edge research and reviews that advance understanding of water quality assessment, pollution control technologies, and sustainable strategies for pollution mitigation and resource recovery. Topics of interest include, but are not limited to, novel monitoring and modelling approaches for water quality, removal of nutrients and emerging pollutants, membrane and biotechnological treatment systems, resource recovery from wastewater (e.g., nutrients, energy), integrated management of urban and agricultural watersheds, and policy and risk assessment frameworks that support effective water governance. Interdisciplinary contributions that link fundamental science with practical applications are particularly welcome. By consolidating diverse perspectives on water pollution challenges and solutions, this Special Issue seeks to stimulate progress toward more resilient and sustainable management of water resources. Original research articles, case studies, and comprehensive reviews are all encouraged.

Prof. Dr. Aleksandra Drizo
Guest Editor

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

  • water pollution assessment
  • pollution control technologies
  • wastewater treatment
  • nutrient recovery
  • emerging contaminants
  • sustainable water management

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Published Papers (2 papers)

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Research

20 pages, 36527 KB  
Article
Water Quality Monitoring and Spatiotemporal Mapping of Water Quality in the Mae Kha Canal, Chiang Mai, Thailand
by Vongkot Owatsakul, Suttipong Kawilapat, Phonpat Hemwan and Damrongsak Rinchumphu
Water 2026, 18(10), 1219; https://doi.org/10.3390/w18101219 - 18 May 2026
Viewed by 234
Abstract
Urban canals in rapidly growing cities often experience water quality deterioration from wastewater inputs and stormwater runoff, with impacts that vary across space and time. This study aimed to quantify five-year spatiotemporal patterns of key water quality indicators in the Mae Kha Canal, [...] Read more.
Urban canals in rapidly growing cities often experience water quality deterioration from wastewater inputs and stormwater runoff, with impacts that vary across space and time. This study aimed to quantify five-year spatiotemporal patterns of key water quality indicators in the Mae Kha Canal, Chiang Mai, Thailand, and to identify persistent degradation hotspots to support management. Monthly longitudinal data (2020–2024) for dissolved oxygen (DO), biochemical oxygen demand (BOD), pH, and water temperature (WT) were collected at 18 monitoring stations and analyzed using locally estimated scatterplot smoothing (LOESS) for trend exploration, repeated-measures correlation for association between parameters, and Geographic Information Systems-based spatiotemporal mapping using inverse-distance-weighted interpolation. Results showed that DO remains very low across much of the canal, while BOD was persistently high; pH was relatively stable near neutral and WT exhibited clear seasonal variability. Spatial mapping indicated that upstream sections generally had better quality, whereas the urban middle reaches repeatedly exhibited hotspots of low DO and high BOD. BOD and DO levels positively correlate with pH level (p < 0.001). In conclusion, the Mae Kha Canal has sustained impairment over 2020–2024, highlighting the need for strengthened wastewater control, stormwater management, and targeted remediation guided by hotspot-based monitoring. Full article
(This article belongs to the Special Issue Water Pollution Assessment, Control, and Resource Recovery)
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17 pages, 5725 KB  
Article
Phosphorus Removal from Wastewater and Stormwater Using Steel Slag-Based Hydrogel Composites
by Aleksandra Drizo, Mrinalini Mishra, Muhammad Omar Shaikh, Li-Tung Chang, Meng-Tsun Lai and Yesong Gu
Water 2026, 18(8), 924; https://doi.org/10.3390/w18080924 - 13 Apr 2026
Viewed by 532
Abstract
Anthropogenic phosphorus (P) release from human activities continues to degrade freshwater systems, underscoring the need for effective and sustainable approaches to P removal and management. This study investigates steel slag–chitosan–nanoclay hydrogel composites as a waste-derived alternative to metal-doped biopolymer hydrogels for P removal [...] Read more.
Anthropogenic phosphorus (P) release from human activities continues to degrade freshwater systems, underscoring the need for effective and sustainable approaches to P removal and management. This study investigates steel slag–chitosan–nanoclay hydrogel composites as a waste-derived alternative to metal-doped biopolymer hydrogels for P removal from wastewater and stormwater. Steel slag aggregates (SSAs), a by-product of steel manufacturing, were incorporated into chitosan-based hydrogel matrices to produce composite sorbents derived from waste materials with potential for cost-effective application. Two formulations (SSA20 and SSA40) were synthesized and compared with a chitosan–nanoclay–iron (CH/NC/Fe) reference hydrogel. Phosphorus adsorption affinity was evaluated using a standardized 24 h batch protocol at environmentally relevant concentrations representative of municipal wastewater (10 mg P L−1) and stormwater or agricultural runoff (1 mg P L−1). The SSA40 composite exhibited the highest P adsorption affinity (Rd = 2.39 ± 0.22 L g−1), outperforming both standalone SSA and the Fe-based hydrogel reference. Scanning Electron Microscopy and Energy-Dispersive X-Ray Spectroscopy (SEM–EDX) analyses revealed strong polymer–slag interactions and metal–phosphate associations, consistent with coupled adsorption and precipitation mechanisms. The SSA-based hydrogels also exhibited self-induced acidification (pH 3.3–4.2), enhancing phosphate uptake while providing intrinsic pH buffering. This study introduces a stable, waste-derived hydrogel composite and demonstrates a reproducible, environmentally relevant batch-testing approach for comparative evaluation of hydrogel phosphorus sorbents, supporting evidence-based strategies for sustainable phosphorus pollution control. Full article
(This article belongs to the Special Issue Water Pollution Assessment, Control, and Resource Recovery)
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