Bioelectrochemical Treatment and Purification of Wastewater

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Purification Technology".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 2017

Special Issue Editors


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Guest Editor
Biogas Institute of Ministry of Agriculture and Rural Affairs (BIOMA), Chinese Academy of Agricultural Sciences, No. 13 Section 4, South Renmin Rd., Chengdu 610041, China.
Interests: environmental biotechnology; wastewater treatment; bioelectrochemical pollutant treatment process; environmental microbiology engineering; integrated devices design

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Guest Editor
Department of Municipal Engineering, School of Architecture and Civil Engineering, Xihua University, Chengdu 600039, China
Interests: water/wastewater treatment; environmental bioelectrochemistry; bioelectrochemistry-based water quality determination; water restoration

Special Issue Information

Dear Colleagues,

The bioelectrochemical treatment and purification of wastewater is one of the most attractive environmental research fields in the literature. A perspective that promotes this key interest is the possibility of sustainable and carbon neutralization processes, innovative microorganisms, and low-cost wastewater treatment. However, more attention is needed in designing efficient electrode/reactor configurations, process arrangements, and field-scale application research to achieve desirable performances and minimize costs. The analysis and optimization of the factors affecting the functioning of systems and their applications are relevant steps in determining the performance of the bioelectrochemical process and the purification of wastewater.

Therefore, it is my pleasure to invite you to contribute your research article, communication, or review to the Special Issue dedicated to treatment processes, active microbes, electrode materials, and reactor design of bioelectrochemical treatment and purification of wastewater.

Dr. Nuan Yang
Dr. Fei Guo
Guest Editors

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Keywords

  • bioelectrochemical systems
  • bioelectrochemical treatment
  • wastewater treatment and purification
  • electrodes and reactor design
  • electricity generation
  • nitrogen removal
  • electroactive bacteria
  • conductive materials
  • biofilm formation

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Published Papers (2 papers)

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Research

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11 pages, 4012 KiB  
Article
The Important Role of Denitrifying Exoelectrogens in Single-Chamber Microbial Fuel Cells after Nitrate Exposure
by Xiaojun Jin, Wenyi Wang, Zhuo Yan and Dake Xu
Separations 2024, 11(6), 187; https://doi.org/10.3390/separations11060187 - 14 Jun 2024
Viewed by 818
Abstract
Wastewater treatment using microbial fuel cells (MFCs) is a potentially useful technology due to its low cost, environmental friendliness, and low sludge production. In this study, a single-chambered air cathode MFC (SCMFC) was developed and investigated regarding its performance and microbial community evolution [...] Read more.
Wastewater treatment using microbial fuel cells (MFCs) is a potentially useful technology due to its low cost, environmental friendliness, and low sludge production. In this study, a single-chambered air cathode MFC (SCMFC) was developed and investigated regarding its performance and microbial community evolution following nitrate exposure. During long-term operation, diverse denitrifiers accumulated on the electrodes to form a denitrifying MFC (DNMFC) with stable activity for nitrate reduction. The DNMFC presented considerably higher electroactivity, stability, and denitrification rates than the SCMFC. Though energy recovery decreased in the DNMFC by partial organics utilized for heterotrophic denitrification, the electron transfer efficiency increased. Geobacter as the absolutely dominant genus in the SCMFC anode was eliminated and replaced by Azonexus and Pseudomonas in the DNMFC. Furthermore, the biomass of Pseudomonas (151.0 ng/μL) in the DNMFC cathode was five-fold higher than that in the SCMFC, although the bacterial community compositions were quite similar. The DNMFC with highly abundant Pseudomonas exhibited much better performance in terms of electrochemical activity and nitrate removal. The evolution process of functional bacteria from the SCMFC to the DNMFC comprehensively reveals the significant role of denitrifying electroactive bacteria in a bioelectrochemical system for nitrogen-containing wastewater treatment. Full article
(This article belongs to the Special Issue Bioelectrochemical Treatment and Purification of Wastewater)
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Review

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13 pages, 3128 KiB  
Review
Systematic Assessment of Practical Challenges in Rural Domestic Sewage Treatment in China: Examining Treatment Models, Ecological Risks, and Management Dilemmas
by Yi Gao, Luoyu Wei, Yihong Ge, Xia Xiong, Ming Liu, Xiaomei Jiang, Ke Pan, Xiaobo Guo, Yunhui Lei and Nuan Yang
Separations 2024, 11(10), 287; https://doi.org/10.3390/separations11100287 - 9 Oct 2024
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Abstract
The treatment and purification of rural domestic sewage (RDS) is a pivotal focus in enhancing the living environment in rural areas. Since 2008, special funds for comprehensive rural environmental improvement have been established by the Chinese government. Numerous projects have been implemented to [...] Read more.
The treatment and purification of rural domestic sewage (RDS) is a pivotal focus in enhancing the living environment in rural areas. Since 2008, special funds for comprehensive rural environmental improvement have been established by the Chinese government. Numerous projects have been implemented to treat RDS, resulting in a significant enhancement of China’s rural sewage treatment ratio. However, current discussions often focus on technical investigations, process selection, and operation modes pertaining to urban sewage while overlooking the unique challenges posed by decentralized sewage treatment facilities in rural areas. This work aims to provide technical support for addressing rural sewage treatment and purification in China through an analysis of limitations associated with prevailing mainstream sewage treatment and separation technologies, ecological risks arising from new pollutants present in domestic wastewater, and subsequent management difficulties. Full article
(This article belongs to the Special Issue Bioelectrochemical Treatment and Purification of Wastewater)
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