Advanced Green Materials in Water and Wastewater Treatment

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

Deadline for manuscript submissions: 30 November 2024 | Viewed by 1899

Special Issue Editor


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Guest Editor
Department of Water and energy, University of Guadalajara, Campus Tonala, Tonala 45425, Jalisco, Mexico
Interests: biomaterial; biorefine; nanocellulose; water; microplastic and pollution
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Special Issue Information

Dear Colleagues,

Access to clean water and the preservation of the quality of water bodies are crucial today, as more than 2 billion people around the world face the threat of consuming water contaminated by various agents, from fecal waste to hazardous chemicals. Therefore, it is necessary to carry out research on processes that are oriented towards the protection of rivers, wells and aquatic biodiversity, seeking to prevent pollution and maintain the health of aquatic ecosystems. Advanced materials are systems comprising various materials that vary in their nature, characteristics, shape and dimensions; these have garnered significant interest in the area of water and wastewater treatment systems, including filter media, materials for the adsorption of contaminants, and materials for photocatalysis, among others. It is also crucial to consider the impact of renewable or low-impact raw materials on the environment during the manufacture of advanced materials, from the perspective of sustainability. Therefore, this Special Issue aims to evaluate the current state of knowledge regarding the application of novel approaches in the development of sustainable advanced materials for water quality and wastewater treatment; this is in order to optimize green materials, from forest residues such as nanocellulose and other naturals polymers. This will enable the realization of a circular economy, social responsibility, wastewater management and the design of novel materials for water treatment systems. We are pleased to invite you to contribute knowledge, enhance our understanding of this topic, and mitigate the challenges associated with climate change. In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • The design of novel materials such as membrane and absorbent materials.
  • The application of green advanced materials for the removal of pollutants such as metals, colorants, emerging pollutants and pathogens in water.
  • Catalytic nanoparticles for photocatalysis processes in wastewater treatments.
  • Sustainable materials and biomaterials for various raw materials and alternatives to oil derivatives for the removal of pollutants from water.
  • The use of nanomaterials as water quality sensors, such as carbon derivatives.
  • Materials for electrochemical processes.
  • Filter materials for construction wetlands.
  • Waste-derived adsorbents.

I look forward to receiving your contributions.

Dr. Belkis Sulbarán Rangel
Guest Editor

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. 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

  • biomaterial
  • renewable raw materials
  • circular economy
  • green processes
  • green chemistry
  • waste recovery
  • biomass
  • wastewater treatment systems
  • emerging contaminants

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Published Papers (1 paper)

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Research

15 pages, 4640 KiB  
Article
Photocatalytic Degradation of Azo Dyes in Aqueous Solution Using TiO2 Doped with rGO/CdS under UV Irradiation
by Sunith B. Madduri and Raghava R. Kommalapati
Processes 2024, 12(7), 1455; https://doi.org/10.3390/pr12071455 - 12 Jul 2024
Viewed by 722
Abstract
Photocatalysis, mainly using TiO2 as a catalyst, has emerged as a promising method to address the issue of wastewater treatment. This study explores the enhanced photocatalytic activity of TiO2 through the introduction of reduced graphene oxide (rGO) and cadmium sulfide (CdS) [...] Read more.
Photocatalysis, mainly using TiO2 as a catalyst, has emerged as a promising method to address the issue of wastewater treatment. This study explores the enhanced photocatalytic activity of TiO2 through the introduction of reduced graphene oxide (rGO) and cadmium sulfide (CdS) as selective metal dopants. The incorporation of rGO and CdS into the TiO2 lattice aims to optimize its photocatalytic properties, including bandgap engineering, charge carrier separation, and surface reactivity. The unique combination of CdS and rGO with TiO2 is expected to boost degradation efficiency and reduce the reliance on expensive and potentially harmful sensitizers. This experimental investigation involves the synthesis and characterization of TiO2-based photocatalysts. The photocatalytic degradation of methyl orange (MO) and methylene blue (MB) was assessed under controlled laboratory conditions, studying the influence of metal dopants on degradation kinetics and degradation efficiency. Furthermore, the synthesized photocatalyst is characterized by advanced techniques, including BET, SEM, TEM, XRD, and XPS analyses. The degraded samples were analyzed by UV-Vis spectroscopy. Insights into the photoexcitation and charge transfer processes shed light on the role of metal dopants in enhancing photocatalytic performance. The results demonstrate the potential of a TiO2-rGO-CdS-based photocatalyst in which 100% degradation was achieved within four hours for MO and six hours for MB, confirming efficient azo dye degradation. The findings contribute to understanding the fundamental principles underlying the photocatalytic process and provide valuable guidance for designing and optimizing advanced photocatalytic systems. Ultimately, this research contributes to the development of sustainable and effective technologies for removing azo dyes from various wastewaters, promoting environmental preservation and human well-being. Full article
(This article belongs to the Special Issue Advanced Green Materials in Water and Wastewater Treatment)
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