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Reimagining Sustainable Resource Recovery in Wastewater Treatment Processes

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

Deadline for manuscript submissions: 30 June 2026 | Viewed by 901

Special Issue Editor


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Guest Editor
Department of Environmental Protection and Water Engineering, Faculty of Environmental Engineering, Vilnius Gediminas Technical University, Vilnius, Lithuania
Interests: water; wastewater; treatment; sorbents; environment; protection; sludge; anaerobic; digestion

Special Issue Information

Dear Colleagues,

In this Special Issue, we invite scientists to submit high-quality scientific and review articles on sustainable wastewater treatment and resource recovery. Articles should critically examine existing domestic, industrial or surface wastewater treatment methods and propose new solutions for efficient wastewater treatment using innovative methods, in accordance with the principles of sustainability. The benefits of innovative wastewater treatment methods from a scientific, environmental or economic point of view should be highlighted. Articles should preferably provide insights into how to further manage and utilize unwanted substances removed from wastewater. It is expected that submitted articles will provide new scientific knowledge and insights into improving wastewater treatment technologies and managing wastewater pollutants in a sustainable context.

The following topics will be discussed:

  • Technological and research issues related to wastewater reuse and resource recovery;
  • Tertiary wastewater treatment using "green sorbents";
  • Innovative solutions for individual wastewater treatment;
  • Industrial wastewater treatment and its sustainability;
  • Effective treatment of urban surface wastewater to obtain clean water that does not pollute natural water bodies;
  • Effective wastewater treatment without the use of chemical reagents, eco-technology.

Prof. Dr. Aušra Mažeikienė
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 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

  • wastewater
  • treatment
  • sustainable
  • resource recovery

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Published Papers (1 paper)

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Research

27 pages, 5553 KB  
Article
Phosphorus Removal from Real Wastewater Using Biochar Derived from Sewage Sludge Pretreated with Zero-Valent Iron Nanoparticles in a Fixed-Bed Column
by Aušra Mažeikienė, Tomas Januševičius, Luiza Usevičiūtė, Vaidotas Danila, Mantas Pranskevičius and Eglė Marčiulaitienė
Water 2026, 18(8), 930; https://doi.org/10.3390/w18080930 - 13 Apr 2026
Viewed by 659
Abstract
The aim of this study was to investigate the ability of sewage sludge-derived biochar to remove PO4-P from real biologically treated wastewater. Biochar was produced via the pyrolysis of anaerobically digested sewage sludge pretreated with nanoscale zero-valent iron (nZVI) at concentrations [...] Read more.
The aim of this study was to investigate the ability of sewage sludge-derived biochar to remove PO4-P from real biologically treated wastewater. Biochar was produced via the pyrolysis of anaerobically digested sewage sludge pretreated with nanoscale zero-valent iron (nZVI) at concentrations of 3%, 1.5%, and 0.5% (w/w, based on total solids). A sample without nZVI addition was used as a control. The properties of biochar samples were analyzed, including elemental composition, specific surface area, and pore size. PO4-P removal was evaluated using both batch adsorption and column experiments. The highest adsorption capacity determined in the batch experiment was 2.5 mg/g. When wastewater was passed through columns packed with 0.3–0.6 mm biochar particles at a hydraulic loading rate of 1 m/h, a 3-fold-higher phosphorus retention capacity was obtained in the range of 7.26–7.82 mg/g. The column containing biochar derived from sewage sludge with 3% nZVI accumulated 7% more PO4-P than the biochar without nZVI. All columns effectively removed phosphates from wastewater (efficiency > 80%) due to the chemical composition of biochar, which mainly contained Fe and Ca elements. In contrast to the batch experiment, the columns were subject to the biological sorption of phosphates via microorganisms, physical retention between particles, and the formation of precipitates on the surface of a column. Full article
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