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The Application of Adsorption Technologies in Wastewater Treatment

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: 20 September 2026 | Viewed by 1180

Special Issue Editors


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Guest Editor
School of Engineering and Technology, Chemical Engineering, University of Hull, Hull HU6 7RX, UK
Interests: nanomaterials; green chemistry; waste to materials; environmental protection; wastewater treatment
Special Issues, Collections and Topics in MDPI journals

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Guest Editor Assistant
School of Engineering and Technology, Chemical Engineering, University of Hull, Hull HU6 7RX, UK
Interests: heavy metal removal; environmental remediation; surface engineering; adsorption modelling; waste utilisation

Special Issue Information

Dear Colleagues,

Adsorption is one of the most widely used and effective techniques for removing pollutants from wastewater due to its simplicity, cost-efficiency, and adaptability to a wide range of contaminants. With growing environmental concerns and stricter discharge regulations, research into advanced adsorbents and optimised adsorption systems has gained increasing momentum. This Special Issue aims to highlight recent progress and innovation in adsorption-based technologies for wastewater treatment, from laboratory-scale studies to real-world applications.

We welcome original research articles, critical reviews, and short communications on the development, characterisation, and performance of adsorbent materials, as well as their regeneration, modelling, and integration with other treatment processes. Topics may include novel adsorbent materials (e.g., nanomaterials, modified biochars, composites), kinetic and isotherm modelling, regeneration techniques, process optimisation, integration with other treatment methods, and the life cycle assessment (LCA) of adsorption-based systems. This Special Issue aims to present a balanced view, from fundamental research to practical implementation, encouraging sustainable development and technological innovation.

Topics of interest include (but are not limited to) the following:

  • Removal of heavy metals, dyes, pharmaceuticals, and organic pollutants;
  • Development of low-cost and eco-friendly adsorbents;
  • Advanced characterisation and performance analysis;
  • Fixed-bed/column adsorption and pilot-scale studies;
  • Regeneration and reuse of adsorbents;
  • Coupling adsorption with biological or physicochemical treatments;
  • Life cycle assessment (LCA) and environmental impact analysis.

Dr. Martin J. Taylor
Guest Editor

Dr. Amthal Al-Gailani
Guest Editor Assisstant

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 250 words) can be sent to the Editorial Office for assessment.

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. Water 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
  • wastewater treatment
  • heavy metal removal
  • organic pollutant adsorption
  • low-cost adsorbents
  • fixed-bed systems
  • regeneration
  • adsorption modelling
  • life cycle assessment (LCA)
  • environmental sustainability

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Published Papers (1 paper)

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Research

17 pages, 2780 KB  
Article
A Hybrid Inorganic–Organic Schiff Base-Functionalised Porous Platform for the Remediation of WEEE Polluted Effluents
by Devika Vashisht, Martin J. Taylor, Amthal Al-Gailani, Priyanka, Aseem Vashisht, Alex O. Ibhadon, Ramesh Kataria, Shweta Sharma and Surinder Kumar Mehta
Water 2026, 18(2), 247; https://doi.org/10.3390/w18020247 - 16 Jan 2026
Viewed by 647
Abstract
An inorganic–organic hybrid nano-adsorbent was prepared by chemical immobilisation of an organic Schiff base Cu (II) ion receptor, DHB ((E)-N-(1-(2-hydroxy-6-methyl-4-oxo-4H-pyran-3-yl) ethylidene) benzohydrazide), a selective dehydroacetic acid-based chemosensor, onto a mesoporous silica support. In order to prepare the sorbent, the silylating agent was anchored [...] Read more.
An inorganic–organic hybrid nano-adsorbent was prepared by chemical immobilisation of an organic Schiff base Cu (II) ion receptor, DHB ((E)-N-(1-(2-hydroxy-6-methyl-4-oxo-4H-pyran-3-yl) ethylidene) benzohydrazide), a selective dehydroacetic acid-based chemosensor, onto a mesoporous silica support. In order to prepare the sorbent, the silylating agent was anchored onto the silica. During this procedure, 3-Chloropropyl trimethoxy silane (CPTS) was attached to the surface, increasing hydrophobicity. By immobilising DHB onto the CPTS platform, the silica surface was activated, and as a result the coordination chemistry of the Schiff base generated a hybrid adsorbent with the capability to rapidly sequestrate Cu (II) ions from wastewater, as an answer to combat growing Waste Electrical and Electronic Equipment (WEEE) contamination in water supplies, in the wake of a prolonged consumerism mentality and boom in cryptocurrency mining. The produced hybrid materials were characterised by FTIR, proximate and ultimate analysis, nitrogen physisorption, PXRD, SEM, and TEM. The parameters influencing the removal efficiency of the sorbent, including pH, initial metal ion concentration, contact time, and adsorbent dosage, were optimised to achieve enhanced removal efficiency. Under optimal conditions (pH 7.0, adsorbent dosage 3 mg, contact time of 70 min, and 25 °C), Cu (II) ions were quantitatively sequestered from the sample solution; 93.1% of Cu (II) was removed under these conditions. The adsorption was found to follow pseudo-second-order kinetics, and Langmuir model fitting affirmed the monolayer adsorption. Full article
(This article belongs to the Special Issue The Application of Adsorption Technologies in Wastewater Treatment)
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