Progress in microbial fuel cell technology for wastewater treatment and energy harvesting

Gul, Hajera; Raza, Waseem; Lee, Jechan; Azam, Muhammad; Ashraf, Mujtaba; Kim, Ki‐Hyun

doi:10.1016/j.chemosphere.2021.130828

Cited by 124 publications

(62 citation statements)

References 137 publications

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“…Among the most promising renewable energy technologies, microbial fuel cells (MFC) are emerging as a green strategy to effectively trigger the degradation of organic pollutants in wastewater samples while producing electrons. [206,207] In a typical MFC, electricigenic bacteria on the anode decompose the organic materials in wastewater into CO 2 and H 2 O while generating electrons. These electrons are transferred to cathode via an external circuit to be enrolled in an ORR.…”

Section: Electrochemical Energy Devicesmentioning

confidence: 99%

Experimental and Theoretical Advances on Single Atom and Atomic Cluster‐Decorated Low‐Dimensional Platforms towards Superior Electrocatalysts

Santiago

Xia

et al. 2022

Advanced Energy Materials

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The fundamental relationship between structure and properties, which is called “structure‐property”, plays a vital role in the rational designing of high‐performance catalysts for diverse electrocatalytic applications. Low‐dimensional (LD) nanomaterials, including 0D, 1D, 2D materials, combined with low‐nuclearity metal atoms, ranging from single atoms to subnanometer clusters, are currently emerging as rising star nanoarchitectures for heterogeneous catalysis due to their well‐defined active sites and unbeatable metal utilization efficiencies. In this work, a comprehensive experimental and theoretical review is provided on the recent development of single atom and atomic cluster‐decorated LD platforms towards some typical clean energy reactions, such as water‐splitting, nitrogen fixation, and carbon dioxide reduction reactions. The upmost attractive structural properties, advanced characterization techniques, and theoretical principles of these low‐nuclearity electrocatalysts as well as their applications in key electrochemical energy devices are also elegantly discussed.

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Section: Electrochemical Energy Devicesmentioning

confidence: 99%

Experimental and Theoretical Advances on Single Atom and Atomic Cluster‐Decorated Low‐Dimensional Platforms towards Superior Electrocatalysts

Santiago

Xia

et al. 2022

Advanced Energy Materials

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“…A typical MFC (Figure 1) is comprised of a dual-electrode compartments, each housing anode and cathode, and separated by a semi-permeable PEM. The anodic chamber is operated under anaerobic condition to favor the growth of anaerobic exoelectrogenic microbes that are capable of transferring electrons extracellularly to an electron receptor (Gul et al, 2021). These exoelectrogenic microbes carry out the oxidation of the organic ingredients present in wastewater and produce electrons, protons, and carbon dioxide.…”

Section: Types Of Microbial Electrochemical Technologies With Their Diverse Mechanismmentioning

confidence: 99%

A Sustainable Approach for the Production of Green Energy With the Holistic Treatment of Wastewater Through Microbial Electrochemical Technologies: A Review

2021

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With the plausible depletion of fossil fuels in the near future and its associated environmental impacts, researchers have instigated the search for eco-friendly renewable bioenergy. Moreover, the increase in water pollution by industrial and anthropogenic activities is another alarming global concern. In this regard, the production of renewable and sustainable green bioenergy utilizing wastewater through microbial electrochemical technologies (METs) can alleviate these crucial problems by providing a sustainable solution to meet both the demands of energy and fresh water supply. Moreover, different bio-centered techniques such as nitrification and denitrification for nitrogen removal, and elimination of carcinogenic metals, pathogens, and organic components utilizing microbiota followed by toxicity sensing of different pollutants have been efficaciously exhibited through METs. However, inferior bioenergy production and recovery of low biomass yield in METs with high operational cost are noteworthy bottlenecks that hinder the scalability of this technology. Therefore, this review elaborates different physicochemical factors affecting the performance of METs, microbial interaction for the development of stable biofilm and so forth. Moreover, a broad overview on the production of bioenergy, along with the removal of pollutants from wastewater through different types of METs are also highlighted. Furthermore, the production of biofuels like ethanol, methanol, biodiesel, and gaseous fuel like bio-H2 coupled with power generation using photosynthetic microorganisms via CO2 sequestration through METs are also discussed. Additionally, recent developments with future scope for the field-scale implementation of METs along with their bottlenecks have been discussed, which has not been critically reviewed to date.

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“…Several different types of microbial fuel cells were reported during the last decade. We can group them according to the kind of energy production: benthic microbial fuel cells (BMFC) [ 21 , 22 ]; photosynthetic microbial fuel cells (PhMFCs) [ 23 , 24 , 25 ]; plant microbial fuel cells (PMFC) [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Microbial Fuel Cell Based on Nitrogen-Fixing Rhizobium anhuiense Bacteria

et al. 2022

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In this study, the nitrogen-fixing, Gram-negative soil bacteria Rhizobium anhuiense was successfully utilized as the main biocatalyst in a bacteria-based microbial fuel cell (MFC) device. This research investigates the double-chambered, H-type R. anhuiense-based MFC that was operated in modified Norris medium (pH = 7) under ambient conditions using potassium ferricyanide as an electron acceptor in the cathodic compartment. The designed MFC exhibited an open-circuit voltage (OCV) of 635 mV and a power output of 1.07 mW m−2 with its maximum power registered at 245 mV. These values were further enhanced by re-feeding the anode bath with 25 mM glucose, which has been utilized herein as the main carbon source. This substrate addition led to better performance of the constructed MFC with a power output of 2.59 mW m−2 estimated at an operating voltage of 281 mV. The R. anhuiense-based MFC was further developed by improving the charge transfer through the bacterial cell membrane by applying 2-methyl-1,4-naphthoquinone (menadione, MD) as a soluble redox mediator. The MD-mediated MFC device showed better performance, resulting in a slightly higher OCV value of 683 mV and an almost five-fold increase in power density to 4.93 mW cm−2. The influence of different concentrations of MD on the viability of R. anhuiense bacteria was investigated by estimating the optical density at 600 nm (OD600) and comparing the obtained results with the control aliquot. The results show that lower concentrations of MD, ranging from 1 to 10 μM, can be successfully used in an anode compartment in which R. anhuiense bacteria cells remain viable and act as a main biocatalyst for MFC applications.

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Progress in microbial fuel cell technology for wastewater treatment and energy harvesting

Cited by 124 publications

References 137 publications

Experimental and Theoretical Advances on Single Atom and Atomic Cluster‐Decorated Low‐Dimensional Platforms towards Superior Electrocatalysts

Experimental and Theoretical Advances on Single Atom and Atomic Cluster‐Decorated Low‐Dimensional Platforms towards Superior Electrocatalysts

A Sustainable Approach for the Production of Green Energy With the Holistic Treatment of Wastewater Through Microbial Electrochemical Technologies: A Review

Microbial Fuel Cell Based on Nitrogen-Fixing Rhizobium anhuiense Bacteria

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