Microbial Electrochemistry Technology: The Applications in the Environment and Human Health

A special issue of Bioengineering (ISSN 2306-5354). This special issue belongs to the section "Biochemical Engineering".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 4781

Special Issue Editors

Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China
Interests: bioelectrochemical system; biosynthesis of nanomaterials; detection of pathogenic microorganisms
State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
Interests: constructed wetlands; biological wastewater treatment; bioelectrochemistry; remediation of heavy metal pollution; anaerobic digestion
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Guest Editor
School of Chemical and Materials Engineering, National University of Sciences and Technology, Islamabad 44000, Pakistan
Interests: chemical engineering; biological wastewater treatment; bioelectrochemistry

Special Issue Information

Dear Colleagues,

The field of microbial electrochemical technologies (METs) has been focused on identifying bacteria capable of extracellular electron transfer (EET) for over 30 years. These technologies have a wide range of potential applications in various fields, such as energy production, environmental remediation, and biotechnology. For example, EET-capable bacteria can be used to generate hydrogen gas, fix nitrogen as well as carbon compounds, and synthesize valuable chemicals in a microbial electrolysis cell (MEC). In a microbial fuel cell (MFC), electrons can be harnessed from EET-capable bacteria to power small electronic devices, desalinate water, and treat waste/wastewater. Furthermore, METs also have several potential applications in human health, including in the development of sensors, diagnostic tools, powering biomedical devices, bioremediation, producing new antimicrobial agents, biopharmaceuticals, and therapeutics by programming protein expressions as well as materials; however, challenges such as developing a bacteria–electron acceptor interface, limited electron flow in natural cells, and scaling-up reactors have hindered the progress of METs. To overcome these challenges, a multidisciplinary strategy involving engineering, electrochemistry, and microbiology is necessary.

In this Special Issue of Bioengineering we welcome submissions of original papers and reviews on all aspects of METs, including basic EET interactions between bacteria and high-performance electrodes, MFC/MECs, and any type of MET reactor design and improvement, as well as their potential applications in the environment and human health. Studies on the novel electrochemical sterilization of bacteria and algae are also within the scope of this Special Issue.

Dr. Xizi Long
Dr. Hui Wang
Dr. Waheed Miran
Guest Editors

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Keywords

  • microbial electrosynthesis
  • microbial fuel cell
  • electrochemical sterilization
  • pathogen sensors

Published Papers (2 papers)

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Review

19 pages, 1522 KiB  
Review
Microbial Fuel Cell-Based Organic Matter Sensors: Principles, Structures and Applications
by Huang Yao, Jialong Xiao and Xinhua Tang
Bioengineering 2023, 10(8), 886; https://doi.org/10.3390/bioengineering10080886 - 26 Jul 2023
Cited by 2 | Viewed by 1435
Abstract
Wastewater contains a significant quantity of organic matter, continuously causing environmental pollution. Timely and accurate detection of organic content in water can facilitate improved wastewater treatment and better protect the environment. Microbial fuel cells (MFCs) are increasingly recognized as valuable biological monitoring systems, [...] Read more.
Wastewater contains a significant quantity of organic matter, continuously causing environmental pollution. Timely and accurate detection of organic content in water can facilitate improved wastewater treatment and better protect the environment. Microbial fuel cells (MFCs) are increasingly recognized as valuable biological monitoring systems, due to their ability to swiftly detect organic indicators such as biological oxygen demand (BOD) and chemical oxygen demand (COD) in water quality. Different types of MFC sensors are used for BOD and COD detection, each with unique features and benefits. This review focuses on different types of MFC sensors used for BOD and COD detection, discussing their benefits and structural optimization, as well as the influencing factors of MFC-based biomonitoring systems. Additionally, the challenges and prospects associated with the development of reliable MFC sensing systems are discussed. Full article
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19 pages, 1304 KiB  
Review
Bioengineering for the Microbial Degradation of Petroleum Hydrocarbon Contaminants
by Minzhen Wang, Mingzhu Ding and Yingjin Yuan
Bioengineering 2023, 10(3), 347; https://doi.org/10.3390/bioengineering10030347 - 10 Mar 2023
Cited by 6 | Viewed by 2757
Abstract
Petroleum hydrocarbons are relatively recalcitrant compounds, and as contaminants, they are one of the most serious environmental problems. n-Alkanes are important constituents of petroleum hydrocarbons. Advances in synthetic biology and metabolic engineering strategies have made n-alkane biodegradation more designable and maneuverable for solving [...] Read more.
Petroleum hydrocarbons are relatively recalcitrant compounds, and as contaminants, they are one of the most serious environmental problems. n-Alkanes are important constituents of petroleum hydrocarbons. Advances in synthetic biology and metabolic engineering strategies have made n-alkane biodegradation more designable and maneuverable for solving environmental pollution problems. In the microbial degradation of n-alkanes, more and more degradation pathways, related genes, microbes, and alkane hydroxylases have been discovered, which provide a theoretical basis for the further construction of degrading strains and microbial communities. In this review, the current advances in the microbial degradation of n-alkanes under aerobic condition are summarized in four aspects, including the biodegradation pathways and related genes, alkane hydroxylases, engineered microbial chassis, and microbial community. Especially, the microbial communities of “Alkane-degrader and Alkane-degrader” and “Alkane-degrader and Helper” provide new ideas for the degradation of petroleum hydrocarbons. Surfactant producers and nitrogen providers as a “Helper” are discussed in depth. This review will be helpful to further achieve bioremediation of oil-polluted environments rapidly. Full article
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