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Novel Materials for Wastewater Treatment and Environmental Protection

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

Deadline for manuscript submissions: closed (20 January 2023) | Viewed by 4613

Special Issue Editors


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Guest Editor
Faculty Biotechnical Systems Engineering, University Politehnica of Bucharest, Bucharest, Romania
Interests: wastewater treatment; novel materials; nanomaterials; heavy metals removal; phtocatalysis

E-Mail Website
Guest Editor
Faculty of Biotechnical Systems Engineering, University Politehnica of Bucharest, Bucharest 060042, Romania
Interests: environmental protection,wastewater treatment, novel materials,
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue will collect the latest and most significant scientific advances and review articles relating to all technological advances and materials innovations in the field of wastewater treatment and environmental protection.

In recent decades, one of the major environmental problems we have had to face is the reclamation of water bodies, including seas, lakes, rivers, and aquifers, polluted by different classes of chemicals, such as heavy metals, organic compounds, endocrine-disrupting chemicals, pharmaceuticals, dyes, detergents, bacteria, plastics, etc. In this regard, the development of new technologies, materials, and models play a crucial role in the defense of the environment and human health.

The use of materials of different origins (natural, polymeric, inorganic, organic, hybrid, etc.) for the removal of dangerous contaminants through adsorption, degradation, and/or transformation processes are considered to be of particular interest. The use of materials whose production or supply is of low environmental and economic impact, natural substrates, and/or waste materials suitably modified for such applications is encouraged. Experimentation with innovative membranes and nanomaterials for the desalination and separation of contaminants from industrial process waters is another research area that falls within the topic of this Special Issue. Particular importance stems from their characterization, the estimation of their purifying capacities, and the understanding and modeling of the processes at play. New experimental and theoretical approaches are encouraged.

This Special Issue will also discuss new uses of polymer-based materials as ecological adsorbents for the removal of inorganic and organic pollutants from the environment, both at the laboratory and industrial scale. New technologies for the removal of inorganic or organic pollutants from the environment that are ecological and respect the principles of sustainable development are preferred. Authors can submit their work related to the main aspects of polymer-based materials used as adsorbents for the removal of inorganic and organic pollutants from the environment, e.g., the synthesis and characterization of polymer-based adsorbents, methods and procedures of removing inorganic and organic pollutants from the environment (wastewater; contaminated soils; polluted air), valorisation possibilities of exhausted polymer-based adsorbents, etc. Submissions related to recycling, environmental impacts, and policies of polymer-based material valorisation in the context of the circular economy are also encouraged.

Dr. Cristina Ileana Covaliu - Mierla
Prof. Dr. Gigel Paraschiv
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. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

  • innovative wastewater treatment technologies
  • environmental depollution
  • removal of emergent contaminants
  • advanced oxidation processes
  • adsorption of inorganic and organic contaminants from water
  • photocatalytic degradation of pollutants such as bacteria and viruses
  • advanced membrane technology and nanomaterials for water and wastewater applications
  • characterization methods for innovative materials
  • implementation of adsorption kinetics models
  • design of chemical-physical-biological systems for wastewater remediation
  • polymer-based materials
  • ecological adsorbents
  • environmental protection
  • pollutants removal
  • wastewater treatments
  • soils remediation
  • treatment of polluted air
  • recycling
  • circular economy

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Published Papers (2 papers)

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18 pages, 6974 KiB  
Article
Application of Micron-Sized Zero-Valent Iron (ZVI) for Decomposition of Industrial Amaranth Dyes
by Dominika Ścieżyńska, Dominika Bury, Michał Jakubczak, Jan Bogacki, Agnieszka Jastrzębska and Piotr Marcinowski
Materials 2023, 16(4), 1523; https://doi.org/10.3390/ma16041523 - 11 Feb 2023
Cited by 1 | Viewed by 1895
Abstract
Dyes are highly toxic and persistent in the environment. Their presence in water causes environmental and social problems. Dyes must be effectively removed from the water. A UV/ZVI/H2O2 process was applied to decompose two organic dyes, AM E123 and AM [...] Read more.
Dyes are highly toxic and persistent in the environment. Their presence in water causes environmental and social problems. Dyes must be effectively removed from the water. A UV/ZVI/H2O2 process was applied to decompose two organic dyes, AM E123 and AM ACID. A commercial ZVI product, Ferox Flow, was used, and its properties were determined using SEM and XRF. The zeta potential, surface area, and optical properties of ZVI were also determined. The efficiency of dye removal in optimal conditions was 85.5% and 80.85% for AM E123 and AM ACID, respectively. Complete decolorization was observed in all samples. The decomposition of both dyes occurred according to a modified pseudo-second-order reaction and there was a statistically significant correlation between the TOC decrease, pH, and process time. The catalyst was observed to have high stability, and this was not affected by the performance of the treatment process even after the third cycle, as confirmed by the results of the catalyst surface analysis and iron diffusion test. Slight differences in process efficiency were observed after each cycle. The need for only a small amount of catalyst to decompose AM E123 and AM ACID, coupled with the ability to reuse the catalyst without the need for prior preparation, may reduce catalyst purchase costs. Full article
(This article belongs to the Special Issue Novel Materials for Wastewater Treatment and Environmental Protection)
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12 pages, 2337 KiB  
Article
Biosorptive Removal of Ethacridine Lactate from Aqueous Solutions by Saccharomyces pastorianus Residual Biomass/Calcium Alginate Composite Beads: Fixed-Bed Column Study
by Lăcrămioara Rusu, Cristina-Gabriela Grigoraș, Andrei-Ionuț Simion, Elena-Mirela Suceveanu, Andreea V. Dediu Botezatu and Maria Harja
Materials 2022, 15(13), 4657; https://doi.org/10.3390/ma15134657 - 2 Jul 2022
Cited by 7 | Viewed by 1823
Abstract
In this study, ethacridine lactate removal from aqueous solution using a biosorbent material based on residual microbial biomass and natural polymers in fixed-bed continuous column was investigated. Composite beads of Saccharomyces pastorianus residual biomass and calcium alginate were obtained by immobilization technique. The [...] Read more.
In this study, ethacridine lactate removal from aqueous solution using a biosorbent material based on residual microbial biomass and natural polymers in fixed-bed continuous column was investigated. Composite beads of Saccharomyces pastorianus residual biomass and calcium alginate were obtained by immobilization technique. The prepared biosorbent was characterized by Fourier transformed infrared spectroscopy, scanning electron microscopy, and analysis of point of zero charge value. Then, laboratory-scale experiments by fixed-bed column biosorption were conducted in continuous system. To this purpose, the column bed high (5 cm; 7.5 cm), initial pollutant concentration (20 mg/L; 40 mg/L), and solution flow through the column (0.6 mL/min; 1.5 mL/min) were considered the main parameters. Recorded breakthrough curves suggest that lower flow rates, greater bed heights, and a lower concentration of ethacridine lactate led to an increased biosorption of the target compound. The biosorption dynamic was investigated by nonlinear regression analysis using the Adams–Bohart, Yoon–Nelson, Clark, and Yan mathematical models. Conclusively, our research highlights, firstly, that the obtained biosorbent material has the required properties for retaining the ethacridine lactate from aqueous solution in continuous system. Secondly, it emphasizes that the modeling approach reveals an acceptable fitting with the experimental data for the Yoon–Nelson, Clark, and Yan models. Full article
(This article belongs to the Special Issue Novel Materials for Wastewater Treatment and Environmental Protection)
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