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Development of Bio-Electrochemical Systems for Waste Exploitation: A Multipurpose Technology for Increasing Circularity and Environmental Sustainability

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Waste and Recycling".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 3469

Special Issue Editors

Dr. Asimina Tremouli

E-Mail Website
Guest Editor
School of Chemical Engineering, National Technical University of Athens, 15780 Athens, Greece
Interests: bio-electrochemical systems; bio-electrochemical systems’ design improvements; materials; modeling; power generation); biofuel production and upgrading; electro fermentation; waste treatment; renewable energy systems (integration of renewable energy for self-sustainable systems); electrochemistry (electrochemical characterization techniques)
Dr. Pavlos Pandis

E-Mail Website
Guest Editor
Laboratory of Inorganic Materials Technology, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
Interests: microbial fuel cell fabrication and operation; materials science; environmental waste treatment; electrochemistry; nanotechnology.

Special Issue Information

Dear Colleagues,

Bio-electrochemical systems (BESs) take advantage of the metabolic processes of collective microbes for wastewater treatment, energy generation and resource recovery. BESs are categorized into four main types: microbial fuel cells (MFCs), microbial desalination cells (MDCs), microbial electrolysis cells (MECs) and microbial electrosynthesis (MES). MFCs are mainly used for wastewater treatment and electricity generation, and MDCs are used for ion desalinization, whereas MECs are mainly used for H2 or CH4 production (bio-gas upgrading) and MES for chemical production. According to the scope of the technology, several systems with different designs and construction materials have been proposed. Although several bio-reactor designs have been investigated with both expensive and cheap materials and under different operating conditions, BESs are still in their infancy.

This Special Issue will present recent developments that have been made in the field of BESs. Papers that present the most recent findings regarding BESs such as designs, alternative materials for electrodes, separators, catalysts, waste/wastewater treatment, energy generation, resource recovery, electrofermentation and the modeling of the processes are welcome. Review articles are also welcome.

Dr. Asimina Tremouli
Dr. Pavlos Pandis
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. Sustainability 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 2400 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

  • wastes/wastewater valorization
  • bio-fuels
  • bio-electrochemical systems (BESs)
  • microbial fuel cells (MFCs)
  • microbial electrosynthesis (MES)
  • microbial desalination cells (MDCs)
  • microbial electrolysis cells (MECs)
  • electrofermentation

Published Papers (2 papers)

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12 pages, 2315 KiB  
Article
Architecture Optimization of a Single-Chamber Air-Cathode MFC by Increasing the Number of Cathode Electrodes
by Theofilos Kamperidis, Asimina Tremouli and Gerasimos Lyberatos
Sustainability 2023, 15(17), 13107; https://doi.org/10.3390/su151713107 - 31 Aug 2023
Viewed by 579
Abstract
The aim of this study was the optimization of a single-chamber microbial fuel cell (MFC) architecture, by increasing the number of cathode electrodes. An air cathode single chamber MFC with a modifiable lid and bottom was operated with 4 and 6 Gore-Tex MnO [...] Read more.
The aim of this study was the optimization of a single-chamber microbial fuel cell (MFC) architecture, by increasing the number of cathode electrodes. An air cathode single chamber MFC with a modifiable lid and bottom was operated with 4 and 6 Gore-Tex MnO2 cathode electrodes. The anode consisted of graphite granules. It was found that the increase from 4 (total cathodic surface area of 160 cm2) to 6 (total cathodic surface area of 240 cm2) electrodes resulted in an increase of the maximum current and the maximum power output of the cell by approximately 72% and 129%, respectively. Additionally, by increasing the cathodic surface area the internal resistance (Rint) of the unit decreased by approximately 19%. The organic removal from the substrate was not affected by the addition of the new electrodes while it was high across all cases studied (chemical oxygen demand (COD) removal > 89%). The average coulombic efficiency (CE) during the 4-electrode operation was 14.3%, while the corresponding efficiency for 6-electrode operation was 18.5%. Full article
(This article belongs to the Special Issue Development of Bio-Electrochemical Systems for Waste Exploitation: A Multipurpose Technology for Increasing Circularity and Environmental Sustainability)
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Review

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20 pages, 3168 KiB  
Review
Biodesalination Research Trends: A Bibliometric Analysis and Recent Developments
by Mahmoud E. Ahmed, Abdul Mannan Zafar, Mohamed A. Hamouda, Ashraf Aly Hassan and Shirin Arimbrathodi
Sustainability 2023, 15(1), 16; https://doi.org/10.3390/su15010016 - 20 Dec 2022
Cited by 7 | Viewed by 2410
Abstract
Due to rising population and industrialization, two-thirds of the world’s population may suffer water scarcity by 2025. Biodesalination is a promising sustainable practice targeting salt removal from seawater by micro-organisms, using lower energy consumption and resulting in less environmental impact. This study examined [...] Read more.
Due to rising population and industrialization, two-thirds of the world’s population may suffer water scarcity by 2025. Biodesalination is a promising sustainable practice targeting salt removal from seawater by micro-organisms, using lower energy consumption and resulting in less environmental impact. This study examined the evolution of biodesalination from 2007 to 2022 by applying bibliometric analysis. A scoping review was also conducted through content analysis of biodesalination publications. Using the Scopus database, the research trends, major contributors in the field, and recent advancements were identified. The study investigated a total of 80 peer-reviewed journal articles in the field of biodesalination. Results of the bibliometric analysis revealed that publications peaked in 2022 and citations in 2021, with values of 14 and 473, respectively. Results also revealed that the research trend in biodesalination is leaning towards the use of microbial desalination cells. Furthermore, advancements in the field focused on enhancing the nutrient medium to yield better growth rates for algae and cyanobacteria and improve desalination efficiencies to up to 40%. Other modifications focused on introducing microbial strains with increased salinity tolerance. Finally, an outline of future research potential was presented, focusing on nutrient medium modifications, specifically the substitution of chloride and sodium salts in the medium with nitrate and potassium minerals. Full article
(This article belongs to the Special Issue Development of Bio-Electrochemical Systems for Waste Exploitation: A Multipurpose Technology for Increasing Circularity and Environmental Sustainability)
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