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Processes
Special Issues
Advanced Technologies for the Remediation of Wastewater and Air Pollution
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Advanced Technologies for the Remediation of Wastewater and Air Pollution

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Environmental and Green Processes".

Deadline for manuscript submissions: 10 September 2025 | Viewed by 3278

Special Issue Editors

Dr. Jia Wang

E-Mail Website
Guest Editor
School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China
Interests: disposal and recycling of solid waste; disposal of wastewater; functional utilization of biomass-based materials
Dr. Zhihua Chen

E-Mail Website
Guest Editor
School of Environment, Henan Normal University, Xinxiang 453007, China
Interests: pyrolysis; biochar; adsorption; advanced oxidation; biomass
Dr. Yuanyao Ye

E-Mail Website
Guest Editor
School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: wastewater treatment; bioelectrochemical system; nutrient recovery; sludge recycling
Dr. Jun Wan

E-Mail Website
Guest Editor
School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
Interests: wastewater treatment; adsorption; phosphorus removal and recovery; iron chemistry
Dr. Huabin Wang

E-Mail Website
Guest Editor
School of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, China
Interests: agro-industrial waste sustainable utilization through hydrothermal technologies and application for heavy metal immobilization

Special Issue Information

Dear Colleagues,

Environmental pollution in wastewater and air is a serious problem faced by governments worldwide. Advanced technologies for the remediation of this aforementioned pollution include advanced oxidation processes, adsorption processes, and reduction–adsorption coupled processes, etc., which have emerged as innovative solutions. These advanced technologies have not only been attempted in laboratories but also in pilot and practical applications, and this Special Issue aims to address recent achievements for the remediation of wastewater and air pollution. Topics include but are not limited to the following:

  • Advanced oxidation technologies for the remediation of wastewater and air pollution;
  • Adsorption processes for the remediation of wastewater and air pollution;
  • Reduction–adsorption coupled processes for the remediation of wastewater and air pollution;
  • Advanced materials in remediation application;
  • Operation performance, cost analysis, designation, and planning in pilot and practical applications.

Dr. Jia Wang
Dr. Zhihua Chen
Dr. Yuanyao Ye
Dr. Jun Wan
Dr. Huabin 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. Processes is an international peer-reviewed open access monthly 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 2400 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

  • wastewater treatment
  • remediation of atmospheric pollution
  • advanced biomass-based materials
  • organic contaminants
  • heavy metals
  • advanced oxidation processes
  • adsorption processes
  • reduction of high-valent metals
  • biological treatment
  • pilot and practical applications

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

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

Published Papers (3 papers)

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Research

21 pages, 4677 KiB  
Article
Arsenic Removal from Drinking Water in Huanuara, Peru, Using Metalworking Residues: Characterization and Optimization
by Carlos R. Costa Gil, Edilberto P. Mamani López, Edgardo O. Avendaño Cáceres, Erika V. Vargas Conde, Nancy Flores Cotrado, Diego M. Salazar Delgado and Otto A. Quispe Jiménez
Processes 2025, 13(4), 1190; https://doi.org/10.3390/pr13041190 - 15 Apr 2025
Viewed by 601
Abstract
Arsenic contamination in drinking water poses a critical environmental and public health threat, particularly in rural areas such as Huanuara, Peru, where concentrations exceed the 10 µg·L−1 limit established by the World Health Organization (WHO). This study explores the potential use of [...] Read more.
Arsenic contamination in drinking water poses a critical environmental and public health threat, particularly in rural areas such as Huanuara, Peru, where concentrations exceed the 10 µg·L−1 limit established by the World Health Organization (WHO). This study explores the potential use of iron-rich metalworking residues as an alternative adsorbent. Characterization using Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM–EDS), X-ray Diffraction (XRD), and Brunauer–Emmett–Teller (BET) analysis revealed a specific surface area of 0.7469 m2·g−1, with magnetite (Fe3O4) and metallic iron (Fe0) as the predominant phases. Arsenic concentrations were quantified by Inductively Coupled Plasma Mass Spectrometry (ICP–MS). A batch reactor system treated 16 L per cycle under conditions of 293–298 K and 95.46 kPa. Adsorption parameters were optimized using a Central Composite Rotatable Design (CCRD), with adsorbent mass (31.72–88.28 g) and contact time (4.17–9.83 h) as variables. Under optimal conditions (80 g, 9 h), 99.07% arsenic removal was achieved, reducing concentrations from 530.03 µg·L−1 to ≤4.91 µg·L−1. The quadratic regression model (R2 = 0.90, p = 0.0006) was validated by ANOVA (p < 0.05; F = 22.02). These results demonstrate that metalworking residues offer a scalable and sustainable solution for arsenic remediation, supporting circular economy principles and decentralized water treatment. Full article
(This article belongs to the Special Issue Advanced Technologies for the Remediation of Wastewater and Air Pollution)
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12 pages, 4015 KiB  
Article
Novel Efficiency Calculation Model Based on Fine Particle Tracking Behavior
by Xiulin Liu, Jianyi Chen, Hao Cui, Xiao Ma, Hongbin Zhang and Yongrui Shan
Processes 2024, 12(8), 1710; https://doi.org/10.3390/pr12081710 - 15 Aug 2024
Viewed by 992
Abstract
The underflow entrainment of fine particles occurs during the hydrocyclone separation process, resulting in a “fishhook” effect on grade efficiency. Traditional efficiency models fail to address this phenomenon. This study examines the tracking behavior of fine particles, using variations in centrifugal settling velocity [...] Read more.
The underflow entrainment of fine particles occurs during the hydrocyclone separation process, resulting in a “fishhook” effect on grade efficiency. Traditional efficiency models fail to address this phenomenon. This study examines the tracking behavior of fine particles, using variations in centrifugal settling velocity to characterize separation performance. The effect of this behavior on particle separation is quantified through a tracking coefficient for small particles and an entrainment coefficient for large particles, together forming a novel efficiency calculation model. The experimental research shows that the new model is applicable for the efficiency calculation of particles with different shapes, and can calculate grade efficiency curves with fishhook segments. By comparing with the existing research results, the accuracy and universality of the new model have been demonstrated. This model facilitates the accurate computation of grade efficiency curves, thereby significantly enhancing the precision of efficiency calculations, which provides guidance for the design and selection of hydrocyclones. Full article
(This article belongs to the Special Issue Advanced Technologies for the Remediation of Wastewater and Air Pollution)
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16 pages, 2691 KiB  
Article
Educational Approaches for Integrating Advanced Environmental Remediation Technologies into Environmental Engineering: The ‘Four Styles’ Model
by Shan Liu, Jiaquan Zhang, Min Tao, Ping Tang, Changlin Zhan, Jianlin Guo, Yanni Li and Xianli Liu
Processes 2024, 12(8), 1569; https://doi.org/10.3390/pr12081569 - 26 Jul 2024
Cited by 1 | Viewed by 1164
Abstract
The current talent training system for the environmental engineering major (EEM) at local colleges faces significant challenges, including undefined training objectives, an incomplete curriculum, inconsistent practical teaching platforms, and homogeneous teaching teams. To address these issues, this study introduces the ‘Four Styles’ cultivation [...] Read more.
The current talent training system for the environmental engineering major (EEM) at local colleges faces significant challenges, including undefined training objectives, an incomplete curriculum, inconsistent practical teaching platforms, and homogeneous teaching teams. To address these issues, this study introduces the ‘Four Styles’ cultivation system implemented at the EEM of Hubei Polytechnic University. This system integrates advanced environmental remediation technologies into environmental engineering education through the development of a ‘1 + multiple’ curriculum, the establishment of ‘cloud + field’ practical platforms, and the formation of a diverse ‘1 + 2’ teaching team. The effectiveness of this system was evaluated using self-assessment scores from graduates and employer satisfaction ratings. Results showed that graduates rated their application ability with an average score of 3.96 ± 0.11, with the highest scores in work ethics (4.14), lifelong self-learning (4.11), and teamwork (4.09). Employer satisfaction with graduates’ abilities averaged 81.6 ± 2.33%, with the highest ratings for work ethics (86.0%), teamwork (85.5%), and lifelong self-learning (84.7%) Despite these successes, areas for improvement were identified, including better training in analyzing engineering problems (3.79) and mastering modern tools (3.79). These findings suggest that the ‘Four Styles’ cultivation system effectively enhances the practical skills of EEM students while identifying areas for future curriculum development. Full article
(This article belongs to the Special Issue Advanced Technologies for the Remediation of Wastewater and Air Pollution)
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