Emerging Catalytic Technologies for Sustainable Air and Water Remediation: Challenges and Opportunities

A special issue of Catalysts (ISSN 2073-4344).

Deadline for manuscript submissions: 30 May 2025 | Viewed by 1715

Special Issue Editors


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Guest Editor
Department of Science, University of Basilicata, Viale dell’Ateneo Lucano, 10, 85100 Potenza, Italy
Interests: water treatment; photocatalysis; degradation; advanced oxidation process; nanoparticles; hybrid processes
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
1. College of Engineering, Imam Mohammad Ibn Saud Islamic University, Riyadh 11432, Saudi Arabia
2. ENSCR-Équipe Chimie et Ingénierie des Procédés, URM 6226 CNRS, ENSCR-11, University of Rennes, allée de Beaulieu, CS 508307, 35708 Rennes, France
Interests: water and air treatment; photocatalysis; cold plasma; advanced oxidation process; nanoparticles; hybrid processes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Industrial Revolution profoundly altered the global environment, primarily through the exploitation of fossil fuels and water resources. Human activities, such as dam construction and coastal tourism, have exacerbated environmental degradation, negatively impacting biodiversity. Another significant cause of environmental degradation is the introduction of invasive species, which alter local conditions as they are non-native ecosystems. To address these challenges and promote environmental sustainability, research that integrates socio-economic, physical, and chemical factors is crucial. By combining innovative technologies, biophysical approaches, and economically viable solutions, it is possible to develop integrated management systems for solid waste, water, and air. Many new intensified techniques for air and water treatment are currently under investigation. Among these methods, photocatalysis is a promising technique for removing micropollutants and disinfecting bio-contaminants, and it has gained significant attention. Combining photocatalysis with other methods (e.g., adsorption, Fenton reaction, plasma treatment, catalytic ozonation, biological treatment) can enhance its effectiveness.

We invite authors to contribute original research articles and review articles that address the mechanisms and significance of photocatalytic materials for air and water remediation. Particular interest will be given to papers exploring the combination of photocatalysis with other techniques (e.g., adsorption, Fenton reaction, plasma treatment, catalytic ozonation, and biological treatment combined with biocatalyst).

Topics of interest include, but are not limited to:

  • Antimicrobial photocatalysts.
  • Combined systems for air/water remediation.
  • Mass transfer and photocatalytic reactor modeling.
  • Eco-catalysts and adsorbents from green chemistry.
  • Sustainable water reuse techniques.

Dr. Oussama Baaloudj
Prof. Dr. Aymen Assadi
Guest Editors

Manuscript Submission Information

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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. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

  • water treatment
  • air remediation
  • photocatalysis
  • adsorption
  • combined systems
  • kinetic and reactor modeling
  • antimicrobial photocatalysts

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Published Papers (1 paper)

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Research

17 pages, 2984 KiB  
Article
Photocatalytic Degradation of Pollutants in Air Streams Using Luminous Textiles Under Ultraviolet Light Illumination: A Pilot-Scale Remediation Study
by Meriem Abdelkader, Amine Aymen Assadi, Monia Guiza, Walid Elfalleh, Lotfi Khezami, Hichem Tahraoui, Oussama Baaloudj, Lotfi Mouni, Jie Zhang and Abdeltif Amrane
Catalysts 2025, 15(3), 262; https://doi.org/10.3390/catal15030262 - 9 Mar 2025
Viewed by 1087
Abstract
Air pollution from volatile organic compounds poses significant environmental and public health issues due to their toxicity and persistence in the environment. In this context, this experimental study explored photocatalytic degradation as a promising approach for the degradation of two polluting fatty acids, [...] Read more.
Air pollution from volatile organic compounds poses significant environmental and public health issues due to their toxicity and persistence in the environment. In this context, this experimental study explored photocatalytic degradation as a promising approach for the degradation of two polluting fatty acids, butyraldehyde (BUTY) and isovaleraldehyde, utilizing a TiO2 photocatalyst-supported nonluminous textile within a continuous planar reactor. The impact of varying airflow rates (2 to 6 m3/h), initial pollutant concentrations (10 to 60 mg/m3), and air relative humidity (5 to 90%) on oxidation performance and removal efficiency were systematically investigated. The following optimal conditions were identified: an inlet concentration of 10 mg/m3, an airflow rate of 2 m3/h, a catalyst mass of 25 g/m2, a UV intensity of 2 W/m2, and 50% RH. The luminous textile photocatalytic degradation exhibited notable effectiveness for BUTY removal. To enhance our understanding, a mass transfer model using the Langmuir–Hinshelwood approach as a kinetic model was developed. This modeling approach allowed us to determine kinetic adsorption and degradation constants, reasonably agreeing with the experimental data. This study provides valuable insights into applying nonluminous textile-supported TiO2 photocatalysts for environmental pollutant removal in continuous planar reactors. Full article
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