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Novel and Multifunctional Materials for Water and Wastewater Treatment and Environmental Protection

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 20 August 2024 | Viewed by 1851

Special Issue Editors

Prof. Dr. Vayos G. Karayannis

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Guest Editor
Department of Chemical Engineering, University of Western Macedonia (UOWM), Kozani, Greece
Interests: development of novel materials for use in environmental protection; synthesis of ceramic and composite materials; management, characterization, processing/transformation, stabilization, recycling/upgrading and valorization of industrial and agro-based solid wastes/by-products/secondary resources; treatment of industrial effluents by advanced oxidation processes (AOPs); application of computational, machine learning (ML) and artificial intelligence (AI) technologies to environmental and clean/hydrogen energy issues and social aspects; circular bio/economy
Dr. Ioanna Vasiliadou

E-Mail Website
Guest Editor
Department of Chemical Engineering, UOWM, Kozani, Greece
Interests: water and wastewater treatment; advanced bio-oxidation processes; adsorption; resources and energy recovery from wastewater; soil and groundwater bioremediation; bioelectrochemical systems; mathematical modeling
Dr. Maria Antoniadou

E-Mail Website
Guest Editor
Department of Chemical Engineering, University of Western Macedonia (UOWM), Kozani, Greece
Interests: wastewater treatment; energy; nanocomposites; chemical engineering; environmental engineering; photocatalysis; catalyst; heterogeneous catalysis; nanomaterials; water purification technologies
Special Issues, Collections and Topics in MDPI journals
Dr. Konstantinos Christoforidis

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Guest Editor
Department of Environmental Engineering, Democritus University of Thrace, 67100 Xanthi, Greece
Interests: development of advanced single- and multi-face materials based on metal oxides, organic nanostructures, metal–organic frameworks (MOFs), composites and heterojunctions for environmental- and energy-related applications; inorganic/organic pollutants adsorption; advanced oxidation processes (AOPs); carbon capture; storage and utilization technologies (CCUS); photocatalysis; hydrogen production; CO2 conversion
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Constantinos Tsanaktsidis

E-Mail Website
Guest Editor
Department of Chemical Engineering, UOWM, Kozani, Greece
Interests: conformational and dynamic properties of bio-organic compounds in pollution control technology; organic chemistry applications; environmental engineering; synthesis of novel materials; clean energy; resource recovery; biochars; fuel technology and quality control; alternative fuels; biorefinery

Special Issue Information

Dear Colleagues,

We are delighted to announce the launch of a new Special Issue focusing on the development of novel and multifunctional nano/materials for water and wastewater treatment and environmental protection.

The objective of this Special Issue is to present and highlight the current research developments in the area of novel material development, including single-phase and multi-phase nano/materials (nanocomposites and heterojunctions) that possess multifunctionality. Applications include water and wastewater treatment, the removal of organic and inorganic pollutants, and clean/green hydrogen energy production, as well as air decontamination, carbon management, CO2 capture, conversion, and utilization. Contributions focusing on the fundamental understanding of reaction mechanisms, including through computational studies, are also welcome. The development of efficient, novel, multifunctional nano/materials for solving environmental- and energy-related issues through precise material technology and engineering, as well as aspects related to process engineering, are considered crucial in order to implement large-scale applications.

The current Special Issue will focus on the synthesis methods of novel, multifunctional nano/materials, as well as on studies that elucidate fundamental mechanistic aspects and theoretical works. Contributions of original research articles, both in regard to fundamental and applied science, as well as reviews, mini-reviews and perspectives are welcome.

Dr. Vayos G. Karayannis
Dr. Ioanna Vasiliadou
Dr. Maria Antoniadou
Dr. Konstantinos Christoforidis
Prof. Dr. Constantinos Tsanaktsidis
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. Materials 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

  • novel and multifunctional nano/materials
  • single-phase and multi-phase nano/materials
  • water and wastewater treatment
  • physicochemical processes
  • adsorption
  • advanced oxidation processes (AOPs)
  • photocatalytic reactions
  • green hydrogen production
  • CO2 conversion
  • CCS/CCU

Published Papers (2 papers)

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Research

8 pages, 2849 KiB  
Communication
The Removal of Strontium Ions from an Aqueous Solution Using Na-A Zeolites Synthesized from Kaolin
by Woo-Ri Lim, Chang-Han Lee and Chung-Mo Lee
Materials 2024, 17(3), 575; https://doi.org/10.3390/ma17030575 - 25 Jan 2024
Viewed by 520
Abstract
Sr2+ ions in an aqueous solution were removed using Na-A zeolites synthesized from kaolin, a natural mineral. Na-A zeolites with high crystallinity were synthesized using NaOH/kaolin mass ratios of 0.6 (ZK06) and 0.9 (ZK09). The adsorption reached equilibrium within 120 min. The [...] Read more.
Sr2+ ions in an aqueous solution were removed using Na-A zeolites synthesized from kaolin, a natural mineral. Na-A zeolites with high crystallinity were synthesized using NaOH/kaolin mass ratios of 0.6 (ZK06) and 0.9 (ZK09). The adsorption reached equilibrium within 120 min. The adsorption data obtained from experiments for Sr2+ using ZK06 and ZK09 were appropriately analyzed with pseudo-second-order kinetic and Langmuir isotherm models. Comparing the maximum adsorption capacities (qm) of ZK06 and ZK09 for Sr2+, the highest values were obtained at 1.90 and 2.42 mmol/g, respectively. Consequently, the Na-A zeolites synthesized from kaolin can be evaluated as adsorbents with high adsorption capacities for the removal of Sr2+, proportional to the degree of their crystallinity. Full article
(This article belongs to the Special Issue Novel and Multifunctional Materials for Water and Wastewater Treatment and Environmental Protection)
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23 pages, 5965 KiB  
Article
Influence of the Extraction Solution on the Removal of Heavy Metals from Polluted Soils
by Ioana Monica Sur, Andreea Hegyi, Valer Micle, Timea Gabor and Adrian-Victor Lăzărescu
Materials 2023, 16(18), 6189; https://doi.org/10.3390/ma16186189 - 13 Sep 2023
Viewed by 808
Abstract
Soil pollution with heavy metals is a problem for the whole geosystem. The aim of the research is to identify new solutions for extracting heavy metals from polluted soils so that they can be further exploited. To this end, investigations of the physicochemical [...] Read more.
Soil pollution with heavy metals is a problem for the whole geosystem. The aim of the research is to identify new solutions for extracting heavy metals from polluted soils so that they can be further exploited. To this end, investigations of the physicochemical characteristics of the soil sample under study were carried out. Following the analyses, the soil was characterised as lute-coarse sand (UG) with a strongly acidic pH (4.67), a hygroscopicity coefficient (CH = 4.8% g/g), and a good supply of nutrients: nitrogen (Nt): 0.107%; mobile phosphorus (PAL): 6 mg kg−1 and mobile potassium (KAL): 26 mg kg−1, but is low in humus (2.12%). The metal content of the soil was determined by atomic absorption spectrometry (AAS), and the analyses showed high concentrations of metals (Pb: 27,660 mg kg−1; Cu: 5590 mg kg−1; Zn: 2199 mg kg−1; Cd: 11.68 mg kg−1; Cr: 146 mg kg−1). The removal of metals (Pb, Cu, Zn, Cd, and Cr) from polluted soil by different extraction agents (water, humus, malic acid, chitosan, and gluconic acid) was investigated. Metal extraction experiments were carried out in a continuous orbital rotation-oscillation stirrer at a solid/liquid/ (S/L ratio; g:mL) of 1:4, at two concentrations of extraction solution (1% and 3%), and at different stirring times (2, 4, 6, and 8 h). The yield of the extraction process is very low for all proposed extraction solutions. The maximum values of extraction efficiency are: 0.5% (Pb); 3.28% (Zn); and 5.72% (Cu). Higher values were obtained in the case of Cr (11.97%) in the variant of using humus 3% as an extraction solution at a stirring time of 6 h. In the investigated experimental conditions, the best removal efficiencies were obtained in the case of cadmium (26.71%) when using a 3% malic acid solution. In conclusion, it is considered that, from case to case, the type of extraction solution as well as the nature of the metal influence the mechanism of the depollution process, i.e., the capacity of the fine soil granules to free themselves from the pollutant metal that has adhered to them, and further research is considered necessary in the future. Full article
(This article belongs to the Special Issue Novel and Multifunctional Materials for Water and Wastewater Treatment and Environmental Protection)
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