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Recent Advances in the Environmental Remediation Using Zeolites and Other Adsorbent Materials

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

Deadline for manuscript submissions: 20 August 2024 | Viewed by 1031

Special Issue Editor


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Guest Editor
INCDO-INOE 2000 Research Institute for Analytical Instrumentation Cluj-Napoca, Ploiesti, Romania
Interests: trace elements analysis in environmental samples using advanced analytical techniques; miniaturized spectrometric instrumentation; passive sampling using the diffusive gradients in thin-films (DGT) technique; development and validation of spectrometric methods for environmental applications; elements bioavailability in soil and water; materials characterization using spectrometric techniques
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Special Issue Information

Dear Colleagues,

The topic of the Special Issue is devoted to the newest research trends in the field of environmental treatment techniques using zeolites and other adsorbent materials.

Natural zeolites and their modified forms, synthetic zeolites, and other adsorbent materials have received considerable attention in environmental remediation due to their remarkable physical and chemical properties. Water treatment with the aid of zeolites and adsorbent materials is one of the oldest applications; however, at the same time, there are many perspectives related to its future developments. One of the most promising soil remediation techniques is in situ stabilization using adsorbing amendments to incorporate and immobilize heavy metals to reduce their bioavailability and transfer to the biota. Zeolites and other adsorbent materials have potential in the purification and separation of gases based on their ability to act as molecular sieves. All these applications are based on porous characteristics which provide them with high adsorption capacities and ion exchangers properties.

The articles presented in this Special Issue of Materials will cover various topics ranging from reports on the zeolites and other porous materials’ characterization, modifications and synthesis and their applications in wastewater treatment, soil remediation, and purification and separation of gases.

Dr. Marin Senila
Guest Editor

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

  • zeolites and porous adsorbents
  • environmental protection and remediation
  • physico-chemical characterization of porous adsorbents
  • modification of natural zeolites
  • synthesis of zeolites
  • wastewater treatment
  • soil remediation via in situ stabilization
  • gas separation/purification using zeolites and other porous adsorbents

Published Papers (1 paper)

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Research

14 pages, 6576 KiB  
Article
Green Synthesis and Efficient Adsorption: Na-X Zeolite vs. C/Mn/SiO2 Composite for Heavy Metals Removal
by Magdalena Medykowska, Małgorzata Wiśniewska, Katarzyna Szewczuk-Karpisz, Mariia Galaburda, Olena Oranska and Rafał Panek
Materials 2024, 17(4), 954; https://doi.org/10.3390/ma17040954 - 19 Feb 2024
Viewed by 648
Abstract
The studies aimed to test the adsorption capacity of two silica-enriched porous materials, synthetic Na-X zeolite and Mn-containing carbon composite, towards Pb(II) and Zn(II) ions in single and mixed systems and in the presence of diclofenac (DCF) and (or) poly(acrylic acid) (PAA). The [...] Read more.
The studies aimed to test the adsorption capacity of two silica-enriched porous materials, synthetic Na-X zeolite and Mn-containing carbon composite, towards Pb(II) and Zn(II) ions in single and mixed systems and in the presence of diclofenac (DCF) and (or) poly(acrylic acid) (PAA). The synthetic zeolite was characterized by a well-developed surface area of 728 m2/g and a pore diameter of 1.73 nm, while the carbon composite exhibited 268 m2/g and 7.37 nm, respectively. Na-X was found to be more efficient than the carbon composite (75–212 mg/g) in adsorbing heavy metal ions in both single and bimetallic systems (322–333 mg/g). In turn, the C/Mn/SiO2 composite was more effective in removing Pb(II) ions from the systems that simultaneously contained DCF or PAA (480 and 476 mg/g, respectively). The Na-X zeolite demonstrated the greatest stability in all the systems studied. The highest stability was observed in the DCF + Pb(II) mixture, in contrast to the carbon composites where the stability was much lower. To evaluate the possibility of regeneration of the solids, HCl proved to be the best desorbent for heavy metal ions (efficiency of 99%). In general, both adsorbents offer promising potential for solving environmental problems. Full article
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