Application of Electrochemical Technology for Water 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 2024 | Viewed by 735

Special Issue Editors

School of Environment Science and Engineering, Tianjin University, Tianjin 300350, China
Interests: wastewater treatment and reuse; bio-electrochemical technology for wastewater treatment; water and wastewater infrastructure
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Guest Editor
Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
Interests: bio-electrochemical oxidation; bio-electrochemical reduction; interspecies electron transfer; photo-electrochemical technology; synthesis of semiconductor biohybrids

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Guest Editor
School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
Interests: environmental biotechnology; biological wastewater treatment; nutrient removal and recovery; bioelectrochemistry; electroactive biofilms

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Guest Editor
Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
Interests: bioelectrochemistry; biotechnology; water treatments; electroactive biofilms; extracellular electron transfer; element cycling; electrochemical materials

Special Issue Information

Dear Colleagues,

Access to clean water is an essential pillar of human civilization. However, water systems, including natural aquatic environments and artificial water treatment facilities, are constantly threatened by  pollutants. To address this issue, diverse decontamination technologies have been developed. Electrochemistry-based technologies showcase competitive and attractive advantages in advancing the development of tunable and stable water and wastewater  treatments for effective and efficient decontamination, as well as bio-energy and resource recovery. Moreover, electrochemical approaches serve as promising modules to combine biological processes and other multidisciplinary pipelines to meet the increasing demands of decontamination. In this regard, innovative electrochemical technologies with broad applicability and relevant mechanistic understandings of their environmental implications are of fundamental and practical interest. Therefore, this Special Issue aims to shed light on recent primary discoveries on the application of electrochemical technologies in water and wastewater  treatment. Original research papers with high scientific quality as well as state-of-the-art review articles are welcomed. The topics covered in this Special Issue include, but are not limited to:

Used in water and wastewater treatment:

  • Effective electrode materials/catalysts;
  • Insightful mechanisms on electrode interfacial reactions;
  • Pollutant transformation in electrochemical systems;
  • Bio-electrochemical technology;
  • Development of electrochemical equipment for engineering application.

Prof. Min Ji
Dr. Yinxiu Liang
Dr. Siyuan Zhai
Dr. Shaofeng Zhou
Guest Editors

Manuscript Submission Information

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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

  • water and wastewater treatment
  • electrode materials
  • electrode–liquid interface
  • electrochemical redox process
  • bio-electrochemical technology
  • degradation of organic pollutants
  • detoxification of heavy metals
  • resource recovery

Published Papers (1 paper)

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Research

12 pages, 4803 KiB  
Article
In-Situ Improvement of the Sediment Microenvironment by Nitrate in Tailwater of Wastewater Treatment Plants Combined with Aerobic Denitrifying Bacteria under Low-DO Regulation
by Junyi Chen, Chao Zhang, Yun Liu, Jie Tian and Jianbo Guo
Water 2024, 16(7), 1000; https://doi.org/10.3390/w16071000 - 29 Mar 2024
Viewed by 562
Abstract
Preventing the rebound of black and odorous water bodies is critical for improving the ecological environment of water bodies. This study examined the effect and underlying mechanism of in-situ improvement of the sediment microenvironment by nitrate in the tailwater of wastewater treatment plants [...] Read more.
Preventing the rebound of black and odorous water bodies is critical for improving the ecological environment of water bodies. This study examined the effect and underlying mechanism of in-situ improvement of the sediment microenvironment by nitrate in the tailwater of wastewater treatment plants combined with aerobic denitrifying bacteria under low-DO regulation (TailN + CFM + LDO). On the 60th day of remediation, the levels of dissolved oxygen and oxidation–reduction potential in the overlying water rose to 5.6 mg/L and 300 mV, respectively, the concentration of acid volatile sulfide within the sediment significantly decreased by 70.4%, and the organic matter content in the sediment was reduced by 62.7%, in which the heavy fraction organic matter was degraded from 105 g/kg to 56 g/kg, and the potential risk of water reverting to black and odorous conditions significantly decreased. Amplicon sequencing analysis revealed that the relative abundance of the electroactive bacteria Thiobacillus and Pseudomonas with denitrification capacity was found to be significantly higher in the TailN + CFM + LDO group than in the other remediation groups. Functional prediction of the 16S sequencing results indicated that both the quantity and activity of critical microbial enzymes involved in nitrification and denitrification processes could be enhanced in the TailN + CFM + LDO group. These results improved our understanding of the improvement of the sediment microenvironment and could thus facilitate its application. Full article
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