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Advanced Sorbents for Clean Water Production

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Thin Films and Interfaces".

Deadline for manuscript submissions: closed (20 October 2022) | Viewed by 2510

Special Issue Editors

CICECO–Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
Interests: transport properties (mainly diffusion coefficients in liquids and supercritical fluids; phenomenological modeling; molecular dynamics simulations); separation processes (adsorption/simulated moving bed; ion exchange; membranes; supercritical fluid extraction); synthesis and characterization of microporous materials for catalysis and separation processes
Special Issues, Collections and Topics in MDPI journals
Department of Chemistry and CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
Interests: Remediation of metal contaminated waters by sorption processes, either by reusing biowastes as sorbents either by developing highly selective and efficient magnetic nanomaterials for target elements. Synthesis/application of magnetic graphene-based composites for the removal of metal ions and recovery of technology critical elements, such as lanthanides or Platinum group elements, from water samples
Chemistry Department of University of Aveiro, Aveiro, Portugal
Interests: water treatment; mercury and other metal contaminants; remediation

Special Issue Information

Dear Colleagues,

According to the United Nations, in 2017, an estimated 3 billion people worldwide lacked the ability to safely wash their hands at home—one of the cheapest, easiest, and most effective ways to prevent the spread of diseases like COVID-19. Furthermore, despite the scientific and technological progress witnessed over the last few decades, 2.2 billion people throughout the world still lack access to safely managed water. To fight against these numbers, one of the Sustainable Development Goals of the United Nations is to improve water quality by 2030 by reducing pollution, eliminating dumping and minimizing release of hazardous chemicals and materials, halving the proportion of untreated wastewater, and substantially increasing recycling and safe reuse globally.

Fortunately, the growing awareness and sense of responsibility for the environment are imposing increasingly restrictive limits on pollutants discharged into the environment. Adsorption and ion exchange are well-established simple and effective separation processes that can be applied to drinking water treatment, advanced wastewater treatment, and nonpotable and potable reuse, helping to improve water quality and management. Many articles on new sorbents (i.e., adsorbents and ion exchangers) and membranes are published every year, including biosorbents (popular due to their availability and low cost) and various nanomaterials, functionalized hybrid solids, composites, and polymeric materials. In all cases, the main objective is the preparation of high-capacity sorbents exhibiting favorable kinetics and other designed properties.

In this context, it is our pleasure to invite you to submit your recent achievements—both theoretical and experimental—to this Special Issue as original research articles or reviews. Contributions on the development and characterization of biosorbents and new advanced materials, as well as their application to the removal of contaminants from synthetic and real waters, regeneration, and final disposal, are greatly welcomed.

Prof. Carlos Manuel Silva
Dr. Cláudia B. Lopes
Prof. Eduarda Pereira
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

  • adsorption/desorption
  • ion exchange
  • nanoparticles
  • zeotypes
  • biosorbents
  • composites
  • functionalized materials
  • remediation/recovery
  • decontamination
  • water and wastewater treatment
  • resource recovery from wastewater

Published Papers (1 paper)

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Research

15 pages, 18034 KiB  
Article
Removal of Brilliant Green Dye from Water Using Ficus benghalensis Tree Leaves as an Efficient Biosorbent
by Salma Gul, Azra Gul, Hajera Gul, Rozina Khattak, Muhammad Ismail, Sana Ullah Khan, Muhammad Sufaid Khan, Hani Amir Aouissi and Andrejs Krauklis
Materials 2023, 16(2), 521; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16020521 - 05 Jan 2023
Cited by 12 | Viewed by 1750
Abstract
The presence of dyes in water stream is a major environmental problem that affects aquatic and human life negatively. Therefore, it is essential to remove dye from wastewater before its discharge into the water bodies. In this study, Banyan (Ficus benghalensis, F. [...] Read more.
The presence of dyes in water stream is a major environmental problem that affects aquatic and human life negatively. Therefore, it is essential to remove dye from wastewater before its discharge into the water bodies. In this study, Banyan (Ficus benghalensis, F. benghalensis) tree leaves, a low-cost biosorbent, were used to remove brilliant green (BG), a cationic dye, from an aqueous solution. Batch model experiments were carried out by varying operational parameters, such as initial concentration of dye solution, contact time, adsorbent dose, and pH of the solution, to obtain optimum conditions for removing BG dye. Under optimum conditions, maximum percent removal of 97.3% and adsorption capacity (Qe) value of 19.5 mg/g were achieved (at pH 8, adsorbent dose 0.05 g, dye concentration 50 ppm, and 60 min contact time). The Langmuir and Freundlich adsorption isotherms were applied to the experimental data. The linear fit value, R2 of Freundlich adsorption isotherm, was 0.93, indicating its best fit to our experimental data. A kinetic study was also carried out by implementing the pseudo-first-order and pseudo-second-order kinetic models. The adsorption of BG on the selected biosorbent follows pseudo-second-order kinetics (R2 = 0.99), indicating that transfer of internal and external mass co-occurs. This study surfaces the excellent adsorption capacity of Banyan tree leaves to remove cationic BG dye from aqueous solutions, including tap water, river water, and filtered river water. Therefore, the selected biosorbent is a cost-effective and easily accessible approach for removing toxic dyes from industrial effluents and wastewater. Full article
(This article belongs to the Special Issue Advanced Sorbents for Clean Water Production)
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