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Inorganics
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Inorganic Sorbents in Water Treatment
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Inorganic Sorbents in Water Treatment

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Inorganic Materials".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 5784

Special Issue Editors

Dr. Vitaly Milyutin

E-Mail Website
Guest Editor
Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia
Interests: inorganic sorbents; transition metal ferrocyanides; synthesis; sorption of radioactive elements; membranes; microfiltration; nanofiltration; radioactive waste
Dr. Andrei Ivanets

E-Mail Website
Guest Editor
Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, 220072 Minsk, Belarus
Interests: inorganic sorbents; titanium oxides and phosphates; synthesis; sorption of heavy and radioactive metals; inorganic membranes; production; microfiltration; natural water; liquid radioactive waste decontamination; treatment and processing

Special Issue Information

Dear Colleagues,

Inevitably, in the course of production and manufacturing activities, various types of wastes are generated, imposing a potential hazard to the environment. To date, the greatest environmental damage has been associated with wastewater containing toxic organic and inorganic pollutants, rapidly migrating into the environment when generated in large volumes.

The sorption method has been widely used to remove toxic components from waste and natural water. The advantages of inorganic sorbents compared to organic ion exchangers are relatively inexpensive mineral raw materials and the toxic compound-free production technology according to the ‘green chemistry’ principle.

Inorganic sorbents play a peculiar role in liquid radioactive waste processing due to their chemical, thermal and radiation stability, as well as offering the possibility of disposing of the exhausted sorbents in a form suitable for long-term safe storage.

In this Special Issue, we wish to host original research manuscripts and short reviews covering the latest achievements in:

  • The synthesis of novel types of inorganic sorbents;
  • The study of their physicochemical and sorption characteristics;
  • Application of inorganic sorbents for the decontamination and purification of industrial wastewater and polluted natural water from various organic toxic components, heavy metal ions and radioactive elements.

Dr. Vitaly Milyutin
Dr. Andrei Ivanets
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. Inorganics 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 2200 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

  • inorganic sorbents
  • structure and properties
  • wastewater
  • natural water
  • organic contaminants
  • heavy metals
  • radioactive elements
  • decontamination

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Published Papers (2 papers)

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Research

19 pages, 4853 KiB  
Article
Elimination of Arsenic Using Sorbents Derived from Chitosan and Iron Oxides, Applying Factorial Designs
by Marianela Batistelli, Julián Bultri, Mayra Hernandez Trespalacios, María Florencia Mangiameli, Lina Gribaudo, Sebastián Bellú, María Inés Frascaroli and Juan Carlos González
Inorganics 2023, 11(11), 428; https://doi.org/10.3390/inorganics11110428 - 1 Nov 2023
Cited by 2 | Viewed by 2020
Abstract
Arsenic is highly toxic, affecting millions of people in many regions of the world. That is why developing economic and efficient technologies is imperative to eliminate it. Sorption techniques are attractive as efficient and inexpensive sorbents can be used. Chitosan is an abundant, [...] Read more.
Arsenic is highly toxic, affecting millions of people in many regions of the world. That is why developing economic and efficient technologies is imperative to eliminate it. Sorption techniques are attractive as efficient and inexpensive sorbents can be used. Chitosan is an abundant, naturally occurring, biodegradable, low-cost biopolymer that can be combined with metal oxide to enhance its removability. This work aimed to synthesize a new chitosan–magnetite-based sorbent for arsenic removal. The synthesized sorbent does not present pores, and when using FT-IR, functional groups of the chitosan and the presence of As(V) in the sorbent treated with arsenic were identified. The synthesized magnetite was characterized using XRD spectroscopy. Application of the central composite design model showed that 0.22 g of the sorbent at pH 6.0 could remove 27.6% of As(V). Kinetic data, fitted with the pseudo-first and -second order models, indicated an ion exchange sorption and activation energy of 28.1–31.4 kJ mol−1. The isotherms were fitted with the Langmuir model, indicating favorable monolayer adsorption with high affinity. The sorption energy calculated using Dubinin Radushkevich, 9.60–8.80 kJ mol−1, confirms a sorption mechanism mediated by ion exchange. The thermodynamic parameters of the process were ΔG° (−21.7/−19.7 kJ mol−1), ΔH°(16.7 kJ mol−1) and ΔS°(123.3 J mol−1 K−1). Full article
(This article belongs to the Special Issue Inorganic Sorbents in Water Treatment)
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15 pages, 5834 KiB  
Article
Inorganic Sorbents for Wastewater Treatment from Radioactive Contaminants
by Natalya A. Nekrasova, Vitaly V. Milyutin, Victor O. Kaptakov and Evgeny A. Kozlitin
Inorganics 2023, 11(3), 126; https://doi.org/10.3390/inorganics11030126 - 16 Mar 2023
Cited by 13 | Viewed by 2792
Abstract
The article presents the distribution coefficient (Kd) values of 137Cs and 90Sr tracer radionuclides in solutions of sodium and calcium salts for a wide range of commercially available inorganic sorbents: natural and synthetic aluminosilicates, manganese, titanium and zirconium oxyhydrates, [...] Read more.
The article presents the distribution coefficient (Kd) values of 137Cs and 90Sr tracer radionuclides in solutions of sodium and calcium salts for a wide range of commercially available inorganic sorbents: natural and synthetic aluminosilicates, manganese, titanium and zirconium oxyhydrates, titanium and zirconium phosphates, titanosilicates of alkali metals, and ferrocyanides of transition metals. The results were obtained using a standard technique developed by the authors for evaluating the efficiency of various sorption materials towards cesium and strontium radionuclides. It was shown that bentonite clays and natural and synthetic zeolites are the best for decontaminating low-salt natural water from cesium radionuclides, and ferrocyanide sorbents are the choice for decontaminating high-salt-bearing solutions. The manganese (III, IV) oxyhydrate-based MDM sorbent is the most effective for removing strontium from natural water; for seawater, the barium silicate-based SRM-Sr sorbent is the first-in-class. Results of the study provide a possibility of making a reasonable choice of sorbents for the most effective treatment of natural water and technogenic aqueous waste contaminated with cesium and strontium radionuclides. Full article
(This article belongs to the Special Issue Inorganic Sorbents in Water Treatment)
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