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Geochemistry and Removal of Heavy Metals and Other Pollutants in Water

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

Deadline for manuscript submissions: 20 November 2025 | Viewed by 1659

Special Issue Editors

Dr. Qiusheng Yuan

E-Mail Website
Guest Editor
Yunnan Provincial Key Laboratory of Carbon Sequestration and Pollution Control in Soils, Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Yunnan 650500, China
Interests: ecological remediation; heavy metal; microbial ecology; risk assessment
Special Issues, Collections and Topics in MDPI journals
Dr. Xun Wang

E-Mail Website
Guest Editor
Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
Interests: biogeochemistry; microbial ecology; river damming; watershed management
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue aims to advance the understanding of the geochemical behavior and removal techniques of heavy metals and other pollutants in aquatic environments. The scope of this Special Issue encompasses a wide range of topics, including the sources, fate, and transport of heavy metals and other contaminants, innovative removal technologies, and the impact of these pollutants on water quality and ecosystem health. We welcome original research articles, reviews, and case studies that address these themes.

The aim of this Special Issue is to explore the latest scientific advancements and practical applications in the field of water pollution control. This includes, but is not limited to, studies on the chemical interactions and transformations of heavy metals and other contaminants, the development and optimization of novel remediation methods, and the assessment of the effectiveness of various treatment technologies. The purpose is to provide a comprehensive understanding of how these pollutants behave in water and how they can be effectively removed to protect human health and the environment.

This Special Issue will be situated within the existing literature by filling gaps in current research, offering new insights into the mechanisms of pollutant behavior, and presenting cutting-edge solutions for water treatment. It aims to contribute significantly to the ongoing discourse in environmental geochemistry and water treatment technologies, providing valuable information for researchers, practitioners, and policymakers.

Dr. Qiusheng Yuan
Dr. Xun Wang
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. 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

  • geochemistry
  • heavy metals
  • water pollution
  • remediation techniques
  • water treatment
  • environmental impact
  • ecosystem health

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

20 pages, 3782 KiB  
Article
Fe(III) Adsorption onto Microplastics in Aquatic Environments: Interaction Mechanism, Influencing Factors, and Adsorption Capacity Prediction
by Xing Gong, Suxin Luo, Yuanyuan Yang and Qianqian Zhou
Water 2025, 17(9), 1316; https://doi.org/10.3390/w17091316 - 28 Apr 2025
Viewed by 232
Abstract
The adsorption of Fe(III) onto the surface of microplastics (MPs) enhances their toxicity and mobility in aquatic environments, posing a serious threat to human health and ecosystem balance. This study investigated the adsorption mechanism and influencing factors of Fe(III) on three types of [...] Read more.
The adsorption of Fe(III) onto the surface of microplastics (MPs) enhances their toxicity and mobility in aquatic environments, posing a serious threat to human health and ecosystem balance. This study investigated the adsorption mechanism and influencing factors of Fe(III) on three types of MPs with varying particle sizes and aging degrees using batch experiments in freshwater and saltwater. Machine learning (ML) techniques were employed to predict the adsorption capacity and conduct attribution analysis. The results showed that Fe(III) adsorption in both freshwater and saltwater followed Pseudo-First-Order kinetics and Langmuir isotherms, indicating a monolayer homogeneous physical reaction driven by oxygen-containing functional groups, hydrogen bonds and aromatic rings on the MP surface. The adsorption capacity of MPs for Fe(III) was higher in freshwater than in saltwater, and was positively correlated with the aging degree and pH value, but negatively correlated with the particle size. Among the tested ML models, the Random Forest and Gaussian Process Regression models with Bayesian Optimization performed well in predicting adsorption capacity, with pH value and aging degree identified as key factors based on SHAP analysis. This study conducted a comprehensive investigation of the adsorption behavior between MPs and Fe(III) in water, providing valuable insights for the risk assessment and prevention of MP and Fe(III) pollution in aquatic environments. Full article
(This article belongs to the Special Issue Geochemistry and Removal of Heavy Metals and Other Pollutants in Water)
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18 pages, 18567 KiB  
Article
Characteristics and Driving Factors of Benthic Animal Communities in Different Water Functional Zones of the Jiangsu Section of the Yangtze River
by Mengqi Shi, Mingyue Lou, Jinhua Wu, Guangbin Liu, Han Gao and Mingchen Guo
Water 2024, 16(19), 2778; https://doi.org/10.3390/w16192778 - 29 Sep 2024
Viewed by 1029
Abstract
This study explored the characteristics of benthic animal communities in different water functional areas and the driving factors affecting changes in the community structure of four water functional zones of the Jiangsu section of the Yangtze River: the protection, buffer, reserve, and development [...] Read more.
This study explored the characteristics of benthic animal communities in different water functional areas and the driving factors affecting changes in the community structure of four water functional zones of the Jiangsu section of the Yangtze River: the protection, buffer, reserve, and development and utilization zones. The results showed that the alpha diversity of the benthic animal communities in the protected and reserved zones was significantly higher than that of the buffer and development and utilization zones, and the benthic animal community structure differed significantly across different water functional zones. These zones indirectly affected the community of benthic fauna due to their environmental heterogeneity. Furthermore, the average degree, map density, and average clustering coefficient of the molecular ecological network were highest in the protected zone. The average path length was shorter, and there were more types and numbers of key species in the benthic animal community in the protected zone, indicating high levels of connectivity and efficiency in transferring substances, energy, and information between benthic animals. These results will provide a scientific basis for studying the characteristics and driving factors of benthic animal communities in the Yangtze River and have important significance for assessing and restoring aquatic ecology in the Yangtze River Basin. Full article
(This article belongs to the Special Issue Geochemistry and Removal of Heavy Metals and Other Pollutants in Water)
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