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Journals
Processes
Special Issues
Research on Water Pollution Control and Remediation Technology
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Research on Water Pollution Control and Remediation Technology

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

Deadline for manuscript submissions: 10 August 2025 | Viewed by 917

Special Issue Editor

Prof. Dr. Ahmed Moufti

E-Mail Website
Guest Editor
Regional Center for Careers in Education and Training, Settat, Morocco
Interests: environmental sciences; environmental protection; wastewater treatment; green chemistry; material science

Special Issue Information

Dear Colleagues,

Reducing water pollution essentially requires the application of good practices by users of water and aquatic environments throughout the catchment area, including encouraging less-polluting activities, improving use to reduce the quantity of substances used or discharged, and intercepting pollutant flows.

This Special Issue will be devoted to articles describing preventive and remediation actions in a variety of fields as well as the socio-economic aspects of the environmental protection industry: waste and industrial wastewater, new technologies in sanitation and water pollution, environmental waste, contaminated soil, air pollution, and more.

This Special Issue is aimed primarily at those with a basic and in-depth knowledge of the environment, but it is also a synthesis work of interest to all those working in the field of environmental protection, whether biologists, environmental engineers, agronomists, engineers, or university graduates from a variety of scientific disciplines.

This Special Issue therefore welcomes original research and review articles covering the following topics:

  • Water and aquatic environments;
  • Research on water pollution;
  • New technologies in sanitation and water pollution;
  • Water pollution;
  • Contaminated soil;
  • Air pollution and more.

We hope that this Special Issue, which is currently calling for papers, will provide valuable insights into the possibilities of this powerful technology.

Prof. Dr. Ahmed Moufti
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 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

  • water pollution
  • remediation technology
  • new technologies in environmental
  • sciences
  • remediation
  • environmental waste

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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.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

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

Published Papers (2 papers)

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Research

18 pages, 6058 KiB  
Article
Fe2+-Coupled Organic-Substrate-Enhanced Nitrogen Removal in Two-Stage Anammox Biofilm Reactors
by Yingchun Bao, Qilong Ge, Siyuan Li, Xiaowei Wang, Xuwen Zheng and Zhenguo Chen
Processes 2025, 13(5), 1603; https://doi.org/10.3390/pr13051603 - 21 May 2025
Viewed by 12
Abstract
Anammox is a novel and energy-efficient biological nitrogen removal technology. Enhancing its performance in treating low-strength nitrogen wastewater is essential for expanding its practical applications. In response to challenges such as low nitrogen removal efficiency (NRE), poor operational stability, limited environmental resistance, and [...] Read more.
Anammox is a novel and energy-efficient biological nitrogen removal technology. Enhancing its performance in treating low-strength nitrogen wastewater is essential for expanding its practical applications. In response to challenges such as low nitrogen removal efficiency (NRE), poor operational stability, limited environmental resistance, and the interference of organic compounds commonly found in real wastewater, this study developed a two-stage upflow anammox biofilm reactor system (R1 and R2) enhanced by an Fe2+-coupled organic substrate strategy for deep nitrogen removal under low-nitrogen conditions. Results showed that sodium acetate at a chemical oxygen demand (COD) concentration of 40 mg/L provided the greatest enhancement to anammox activity, achieving an average total nitrogen removal efficiency (NRE) of 90.02%. However, the reactor performance was significantly inhibited under higher COD conditions (e.g., COD = 60 mg/L). Under an influent Fe2+ concentration of 10 mg/L, the reactors’ NRE increased and then decreased as the COD concentration rose from 0 to 100 mg/L, resulting in the highest efficiency being achieved at an average NRE of 94.11%, observed under 10 mg/L Fe2+ coupled with 60 mg/L of COD in the two-stage anammox system. Scanning electron microscopy revealed that the co-addition of Fe2+ and organic substrates led to the formation of granular protrusions and pores on the sludge surface, which favored the structural stability of the biomass. At a COD level of 40 mg/L, the contents of extracellular polymeric substances and heme c in anammox biofilm were significantly higher compared to the addition of 10 mg/L Fe2+ alone, whereas excessive COD inhibited both indicators. These findings suggest that moderate levels of Fe2+ coupled with organic matter can promote anammox activity for deep nitrogen removal, while excessive organics have inhibitory effects. This study provides theoretical support for enhancing nitrogen removal from low-strength wastewater using Fe2+ and organic-substrate-assisted anammox processes. Full article
(This article belongs to the Special Issue Research on Water Pollution Control and Remediation Technology)
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11 pages, 982 KiB  
Article
Bioaccumulation of Heavy Metals in Water and Organs of Stone moroko (Pseudoraspora parva) in Freshwater in Turkey
by Semra Küçük
Processes 2025, 13(4), 1251; https://doi.org/10.3390/pr13041251 - 21 Apr 2025
Viewed by 458
Abstract
Anthropogenic activities have been causing pollution in the environment and aquaculture activities via the contamination of heavy metals from industrial developments. As a result, this environmental pollution may cause health problems in humans. In this study, water (n = 3) and fish [...] Read more.
Anthropogenic activities have been causing pollution in the environment and aquaculture activities via the contamination of heavy metals from industrial developments. As a result, this environmental pollution may cause health problems in humans. In this study, water (n = 3) and fish (n = 10–15) samples were evaluated from Topçam Barrage to assess the heavy metal concentrations in the water and tissue samples of fish, Pseudoraspora parva (muscle, liver, kidney, spleen, gonads, and gills). All samples were measured using the ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometer) in conjunction with a standard solution (As, Cd, Cr, Cu, Zn, Ni, and Pb). The bioaccumulation factor (BCF), target hazard quotient (THQ), and hazard index (HI) were calculated for human health due to fish consumption. A significant degree of heavy metals was found, which followed the order of Zn > Cu > Pb > Ni > Cd > Cr for fish tissues. Heavy metal amounts were found to be mostly higher for Cu and Pb. It was reported that their amounts were around the limit values established by the FAO (Food and Agriculture Organisation) and WHO (World Health Organisation). Further studies are needed on the precautions how to more increase the water quality level. Full article
(This article belongs to the Special Issue Research on Water Pollution Control and Remediation Technology)
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