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Processes
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Nanomaterials for Environmental Remediation Processes
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Nanomaterials for Environmental Remediation Processes

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

Deadline for manuscript submissions: 15 February 2025 | Viewed by 2007

Special Issue Editors

Dr. Natalia Quici

E-Mail Website
Guest Editor
1. División Química Remediación Ambiental, Centro Atómico Constituyentes, CNEA, CONICET, San Martín, Buenos Aires 1041, Argentina
2. Centro de Tecnologías Químicas, Departamento de Ingeniería Química, Universidad Tecnológica Nacional, Facultad Regional Buenos Aires, Medrano 951, CABA 1179, Argentina
Interests: nanomaterials; photorreactors; 3D printing; reactor design; environmental remediation; chromium; uranium; arsenic
Dr. Víctor Nahuel Montesinos

E-Mail Website
Guest Editor
1. División Química Remediación Ambiental, Centro Atómico Constituyentes, CNEA, CONICET, San Martín, Buenos Aires 1041, Argentina
2. Centro de Tecnologías Químicas, Departamento de Ingeniería Química, Universidad Tecnológica Nacional, Facultad Regional Buenos Aires, Medrano 951, CABA 1179, Argentina
Interests: hybrid nanomaterials; environmental remediation; photocatalysis; CO2 conversion
Dr. María de los Milagros Ballari

E-Mail Website
Guest Editor
1. Instituto de Desarrollo Tecnológico para la Industria Química(INTEC), Universidad Nacional del Litoral–CONICET, Santa Fe RA-3000, Argentina
2. Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe RA-3000, Argentina
Interests: photocatalytic processes; photocatalytic building materials; photoreactor modeling and design; environmental technologies

Special Issue Information

Dear Colleagues,

The use of nanomaterials in environmental remediation has seen significant growth in recent years. Nanomaterials, nanosystems, and nanoobjects have become essential tools for effectively removing various pollutants from wastewater, soil, and the air. Their applications span from laboratory research to practical field use.

Therefore, we would like to invite you to submit your original research to this Processes Special Issue entitled “Nanomaterials for Environmental Remediation Processes”. The topics of interest for this Special Issue include (but are not restricted to):

  1. Green synthesized nanomaterials for environmental remediation;
  2. Nanofilters, nanomembranes, nanocomposites, and nanotubes;
  3. Municipal and industrial streams treated with nanomaterial-based systems;
  4. Drinking water purification via nanomaterial-based systems;
  5. In situ and on-site use of nanomaterials for soil remediation;
  6. Nanomaterial-based systems for air depollution or disinfection;
  7. Other aspects of nanosystems in environmental remediation.

Dr. Natalia Quici
Dr. Víctor Nahuel Montesinos
Dr. María de los Milagros Ballari
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. 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

  • nanomaterials
  • environment
  • wastewater
  • air purification
  • soil remediation
  • green synthesis

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

Published Papers (2 papers)

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Research

19 pages, 9800 KiB  
Article
Harnessing Chitosan Beads as an Immobilization Matrix for Zero-Valent Iron Nanoparticles for the Treatment of Cr(VI)-Contaminated Laboratory Residue
by Ignacio Daniel Rychluk, Ulises Casado, Víctor Nahuel Montesinos and Natalia Quici
Processes 2024, 12(10), 2101; https://doi.org/10.3390/pr12102101 - 27 Sep 2024
Viewed by 712
Abstract
Nanocomposites (NCs) consisting of zero-valent iron nanoparticles (nZVI) immobilized in chitosan (CS) were prepared and employed for the removal of hexavalent chromium (Cr(VI)) from both synthetic and real wastewater. Medium (MCS)- and high (HCS)-molecular-weight chitosan and stabilization with carboxymethylcellulose (CMC) and different nZVI [...] Read more.
Nanocomposites (NCs) consisting of zero-valent iron nanoparticles (nZVI) immobilized in chitosan (CS) were prepared and employed for the removal of hexavalent chromium (Cr(VI)) from both synthetic and real wastewater. Medium (MCS)- and high (HCS)-molecular-weight chitosan and stabilization with carboxymethylcellulose (CMC) and different nZVI loads were explored. Characterization through scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDS) and X-ray diffraction (XRD) revealed millimeter-sized spheres with micrometer-sized nZVI clusters randomly distributed. Better nanoparticle dispersion was observed in NCs from the CMC-MCS and HCS combinations. Fourier-transform infrared spectroscopy (FTIR) analysis indicated that CS binds to Fe(II) or Fe(III) on the surface of nZVI through its functional groups -CONH-, -N-H, and -C-OH and through the -COO− functional group of CMC, forming a bidentate bridge complex. Through experiments with synthetic waters, it was found that the elimination of Cr(VI) was favored by lowering the pH, obtaining the maximum percentage of Cr(VI) removal at pH 5.5. With real waters, it was shown that increasing the mass of NCs also improved the removal of Cr(VI), following a pseudo-second-order adsorption kinetics. The synthesized materials show great potential for applications in environmental remediation, showing good efficiency in the removal of Cr(VI) in wastewater. Full article
(This article belongs to the Special Issue Nanomaterials for Environmental Remediation Processes)
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13 pages, 3752 KiB  
Article
Paraquat Removal from Water by Magnetic Nanoparticles Coated with Waste-Sourced Biobased Substances
by Santiago Ocampo, María Eugenia Parolo and Luciano Carlos
Processes 2024, 12(7), 1339; https://doi.org/10.3390/pr12071339 - 27 Jun 2024
Viewed by 832
Abstract
The use of biobased substances derived from industrial and household waste as renewable raw materials for environmental applications is gaining prominence due to its sustainable and cost-effective approach to waste valorisation. Herein, we report the uptake of paraquat, a widely used pesticide, by [...] Read more.
The use of biobased substances derived from industrial and household waste as renewable raw materials for environmental applications is gaining prominence due to its sustainable and cost-effective approach to waste valorisation. Herein, we report the uptake of paraquat, a widely used pesticide, by magnetite nanoparticles coated with composted urban biowaste-derived substances (MNP-BBS). The magnetic nanoparticles were prepared using a modified co-precipitation method, and were characterized through various physicochemical techniques. They were tested as an adsorbent for paraquat removal under diverse experimental conditions, exploring the influence of pH (3–10), MNP-BBS dosages (200–1000 mg L−1), ionic strength (0–0.01 M), and presence of organic matter. The kinetic study revealed that the adsorption of paraquat onto MNP-BBS follows the pseudo-second-order model, reaching the adsorption equilibrium after 2 h of contact and 90% of paraquat removal in the best condition tested (1000 mg L−1). The equilibrium experimental data showed a high adsorption performance with a good fitting to the Freundlich isotherm model. Also, from Langmuir model a maximum adsorption capacity of 0.085 mmol g−1 was estimated. The results indicated that electrostatic interaction between the negative functional groups of the adsorbent and the paraquat play a major role in the adsorption mechanism, although the contribution of π-π and hydrophobic interactions cannot be completely ruled out. This research underscores the potential of utilizing MNP-BBS as an effective adsorbent for the removal of paraquat, shedding light on its application in sustainable water purification processes. Full article
(This article belongs to the Special Issue Nanomaterials for Environmental Remediation Processes)
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