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The Control of Legacy and Emerging Pollutants in Soil and...
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The Control of Legacy and Emerging Pollutants in Soil and Water

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

Deadline for manuscript submissions: closed (31 January 2025) | Viewed by 3998

Special Issue Editors

Dr. Zhaoyang Liu

E-Mail Website
Guest Editor
College of Resources & Environment, Huazhong Agricultural University, Wuhan, China
Interests: emerging pollutants; source identification; transport; bioaccmulation; risk assessment; PFASs; carbonaceous materials; metal-organic framework materials; sorption; remediation
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jia Bao

E-Mail Website
Guest Editor
School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang, China
Interests: emerging pollutants; PFASs; environmental analysis; health risk; advanced oxidation; adsorption; photocatalysis
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Xiaoyan Sun

E-Mail Website
Guest Editor
Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Microbes, Jiangxi Academy of Sciences, Nanchang 330096, China
Interests: nitrogen removal; phosphorus removal; PFASs; heavy metals; non-point source pollution; microbial diversity; environmetnal risk; urban domestic sewage; phytoremediation; wastewater treatment

Special Issue Information

Dear Colleagues,

As legacy and emering pollutants successively appear in the environment, it is imperative to implement effective pollution control and risk management. The differing emission patterns, molecular structures, and physico-chemical properties of legacy and emerging pollutants may result in the need for different control and remediation strategies. The objective of this Special Issue is to present novel materials and remediation technologies for the removal of legacy and emerging pollutants in soil and water. Additionally, the innovative mechanisms employed in the process of pollution control, such as adsorption, advanced oxidation, and bioaccumulation, will be highlighted. Furthermore, effective risk management strategies, including source control, process blocking, and exposure reduction, will be introduced for legacy and emerging pollutants from point and non-point sources. The new findings of this Special Issue may facilitate the tailoring of efficient remdiation technologies to the specific characteristics of legacy and emerging pollutants in soil and water, and can inform targeted risk management strategies, thereby safegurding ecological safety and public health.

Dr. Zhaoyang Liu
Prof. Dr. Jia Bao
Prof. Dr. Xiaoyan Sun
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

  • emerging pollutants
  • PFASs
  • heavy metals
  • nitrogen and phosphorus pollution
  • adsorption
  • advanced oxidation
  • bioaccumulation
  • source control
  • process blocking
  • exposure reduction

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Published Papers (3 papers)

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Research

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16 pages, 9494 KiB  
Article
Removal of Methylene Blue from Simulated Wastewater Based upon Hydrothermal Carbon Activated by Phosphoric Acid
by Jing Hong, Jia Bao and Yang Liu
Water 2025, 17(5), 733; https://doi.org/10.3390/w17050733 - 3 Mar 2025
Cited by 2 | Viewed by 677
Abstract
Cationic dyes pose potential health risks to humans due to their higher toxicity levels. Most current research focuses on the utilization of biomass waste in the preparation of multifunctional materials to mitigate the adverse impact of cationic dye wastewater on the environment. However, [...] Read more.
Cationic dyes pose potential health risks to humans due to their higher toxicity levels. Most current research focuses on the utilization of biomass waste in the preparation of multifunctional materials to mitigate the adverse impact of cationic dye wastewater on the environment. However, conventional methods of biochar preparation require elevated pyrolysis temperatures and greater energy consumption. Accordingly, this study aims to investigate the effectiveness of the removal of methylene blue (MB) from simulated wastewater using a one-step phosphoric acid activation hydrothermal carbonization technique. SEM, BET, XRD, FTIR, and XPS analyses were conducted to investigate the surface morphology and chemical composition of pine sawdust (PS) biomass as a raw material, pine sawdust with hydrothermal carbon (HTC-PS), and pine sawdust with phosphoric acid-activated hydrothermal carbon (PHTC-PS). The results demonstrate that PHTC-PS exhibits a maximum adsorption capacity of 268.4 mg/g for MB at 298 K. The experimental data demonstrate its consistency through both the Langmuir isotherm model and pseudo-second-order kinetic model, suggesting that its adsorption mechanism predominantly involves monolayer formation through chemical interactions. Additionally, thermodynamic parameters reveal that the MB adsorption of PHTC-PS is a spontaneous endothermic reaction. Thus, this study demonstrates that the one-step phosphoric acid activation hydrothermal carbonization method can achieve satisfactory adsorption efficiency with the advantages of lower energy consumption, simplicity to the operation, and mild preparation conditions. Full article
(This article belongs to the Special Issue The Control of Legacy and Emerging Pollutants in Soil and Water)
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19 pages, 7052 KiB  
Article
Insights into the Acute Stress of Glutaraldehyde Disinfectant on Short-Term Wet Anaerobic Digestion System of Pig Manure: Dose Response, Performance Variation, and Microbial Community Structure
by Yongming Wu, Fangfei Li, Liuxing Wu, Shifu He, Peiyu Liang, Lei Zhang, Zhijian Wu, Tao Zhang, Yajun Liu, Xiangmin Liu, Xueping Huang, Lin Zhu, Maolin Wang and Mi Deng
Water 2024, 16(22), 3279; https://doi.org/10.3390/w16223279 - 15 Nov 2024
Cited by 1 | Viewed by 1127
Abstract
The outbreak of epidemics such as African swine fever has intensified the use of disinfectants in pig farms, resulting in an increasing residual concentration of disinfectants in environmental media; however, the high-frequency excessive use of disinfectants that damage pig farm manure anaerobic fermentation [...] Read more.
The outbreak of epidemics such as African swine fever has intensified the use of disinfectants in pig farms, resulting in an increasing residual concentration of disinfectants in environmental media; however, the high-frequency excessive use of disinfectants that damage pig farm manure anaerobic fermentation systems and their mechanisms has not attracted enough attention. Especially, the complex effects of residual disinfectants on anaerobic fermentation systems for pig manure remain poorly understood, thus impeding the application of disinfectants in practical anaerobic fermentation systems. Herein, we explored the effects of glutaraldehyde disinfectant on methane production, effluent physicochemical indices, and microbial communities in a fully automated methanogenic potential test system (AMPTSII). The results show that adding glutaraldehyde led to remarkable alterations in methane production, chemical oxygen demand (COD), volatile solids (VS), and polysaccharide and phosphorus concentrations. During the anaerobic process, the production of methane displayed a notable decrease of 5.0–98% in all glutaraldehyde treatments, and the trend was especially apparent for treatments containing high levels of glutaraldehyde. Comparisons of the effluent quality showed that in the presence of 0.002–0.04% glutaraldehyde, the COD and total phosphorus (TP) increased by 12–310% and 15–27%, respectively. Moreover, the addition of 0.01–0.08% glutaraldehyde decreased the ammonium (NH4+-N) concentration and VS degradation rate by 7.7–15% and 4.9–26.2%. Furthermore, microbiological analysis showed that the glutaraldehyde treatments had adverse effects on the microbial community. Notably, certain functional bacteria were restrained, as highlighted by the decreases in relative abundance and microbial diversity by 1.3–17% and 0.06–21%, respectively. This study provides a theoretical basis for the rational use of disinfectants in anaerobic fermentation systems. Full article
(This article belongs to the Special Issue The Control of Legacy and Emerging Pollutants in Soil and Water)
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Review

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16 pages, 1099 KiB  
Review
Efficiency of Graphene Quantum Dots in Water Contaminant Removal: Trends and Future Research Directions
by Juliana P. Rodríguez-Caicedo, Diego R. Joya-Cárdenas, Miguel A. Corona-Rivera, Noé Saldaña-Robles, Cesar E. Damian-Ascencio and Adriana Saldaña-Robles
Water 2025, 17(2), 166; https://doi.org/10.3390/w17020166 - 10 Jan 2025
Cited by 1 | Viewed by 1685
Abstract
This review explores the efficiency and mechanisms of GQDs in removing contaminants from water, emphasizing their potential for environmental applications. GQDs possess unique physicochemical properties, such as a high surface area, tunable photoluminescence, and strong adsorption capacities, which enable the effective removal of [...] Read more.
This review explores the efficiency and mechanisms of GQDs in removing contaminants from water, emphasizing their potential for environmental applications. GQDs possess unique physicochemical properties, such as a high surface area, tunable photoluminescence, and strong adsorption capacities, which enable the effective removal of diverse contaminants, including heavy metals, organic compounds, and dyes. Their electron-hole separation efficiency and functionalizability enhance their reactivity and selectivity. Notable findings include the integration of GQDs into advanced nanocomposites and supramolecular networks, significantly improving their adsorption and catalytic performance. However, challenges such as variability in synthesis methods, stability under environmental conditions, and the environmental impact of GQDs remain. Addressing these limitations and understanding the interaction mechanisms between GQDs and contaminants are critical. Future research should prioritize scalable green synthesis techniques, long-term environmental assessments, and optimized functionalization strategies to establish GQDs as a sustainable solution in water purification technologies. Full article
(This article belongs to the Special Issue The Control of Legacy and Emerging Pollutants in Soil and Water)
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