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Emerging Technologies for Nutrient Recovery and 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: 30 July 2025 | Viewed by 355

Special Issue Editors


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Guest Editor
Department of Chemical Science, Bernal Institute, University of limerick, Limerick, Ireland
Interests: nutrient recovery; wastewater treatment; bioenergy; biomass pretreatment; anaer-obic digestion; bioelectrochemical system; circular economy
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Guest Editor
Department of Civil and Architectural Engineering, College of Engineering, Sultan Qaboos University, Muscat, Oman
Interests: environmental engineering; water and wastewater engineering; bioenergy; renewable energy; biotechnology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The increasing global demand for water and sustainable waste management has necessitated the development of innovative technologies for nutrient recovery and wastewater treatment. This Special Issue aims to explore emerging methods that enhance the recovery of valuable nutrients such as nitrogen and phosphorus while improving wastewater purification processes. Recent advances in bioelectrochemical systems, membrane technologies, algae-based systems, wetlands, and microbial fuel cells are reshaping the way we approach water treatment and nutrient recycling. These technologies offer the potential to address environmental concerns, optimize resource recovery, and reduce the operational costs of treatment plants. This Special Issue aims to highlight interdisciplinary approaches, innovative designs, and practical applications across industries, providing insights into scalable solutions for a circular economy. Contributions focusing on, but not restricted to, pilot studies, techno-economic analyses, and real-world applications are particularly encouraged.

Dr. Jagdeep Kumar Nayak
Dr. Abdullah Al-Mamun
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.

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Keywords

  • nutrient recovery
  • wastewater treatment
  • bioelectrochemical systems
  • membrane technology
  • resource recycling
  • circular economy
  • microbial fuel cells
  • sustainable water management
  • algae-based systems
  • constructed wetland techno-economic analysis

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Published Papers (1 paper)

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Review

28 pages, 1378 KiB  
Review
Prospect of Conductive Materials in the Anaerobic Digester Matrix for Methane Production: Electron Transfer and Microbial Communication
by Zahra Al Hasani, Jagdeep Kumar Nayak, Noor Juma Al Balushi, Abdullah Al-Mamun and Kundan Samal
Water 2025, 17(9), 1321; https://doi.org/10.3390/w17091321 - 28 Apr 2025
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Abstract
Anaerobic digestion (AD) converts organic waste into methane-rich biogas but often faces performance issues due to organic acid and ammonium nitrogen accumulation. This hinders methanogen growth and reduces methane production. Recent studies show that incorporating conductive materials (CMs) into the AD matrix can [...] Read more.
Anaerobic digestion (AD) converts organic waste into methane-rich biogas but often faces performance issues due to organic acid and ammonium nitrogen accumulation. This hinders methanogen growth and reduces methane production. Recent studies show that incorporating conductive materials (CMs) into the AD matrix can mitigate these issues by facilitating electron transfer between microorganisms. This process accelerates the oxidation of organic acids and ammonium ions, enhancing methane recovery. The effectiveness of CMs depends on their type, porosity, surface morphology, and conductivity, which foster a symbiotic microbial community. This comprehensive review paper aimed to (i) describe the influence of CMs on the growth and enrichment of the AD microbial community, (ii) quantify the enhancement of biodegradation and methane generation, and (iii) observe syntrophic interactions and interspecies electron transfer. The review also summarized the impact of different conductive materials on methane generation and the effect of operational parameters, e.g., dose, size, and external voltage application, on the conductive electrodes. The study summarized that the different conductive materials have different influences, and their application in the AD matrix has to be realistic based on availability and economic benefits. Full article
(This article belongs to the Special Issue Emerging Technologies for Nutrient Recovery and Wastewater Treatment)
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