Electron transfer in Gram-positive bacteria: enhancement strategies for bioelectrochemical applications

Gomaa, Ola M.; Costa, Nazua L.; Paquete, Catarina M.

doi:10.1007/s11274-022-03255-y

Cited by 13 publications

(5 citation statements)

References 97 publications

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“…22 In the direct route, microorganisms themselves transfer electrons to the anode through physical contact between the bacterial cell membrane and the electrode surface via cytochrome or putative nanowire structures. 23 However, a soluble redox active compound (mediator) is responsible for electron transfer in the indirect route. Some microorganisms can release redox-active compounds that are responsible for indirect electron transfer to electrodes.…”

Section: Anodic Reaction: Chmentioning

confidence: 99%

Microbial Fuel Cell, Their Type, Working Principle and Different Factors Affecting Their Performance: A Review

Dileep Ahmad,

Muhammad Haroon,

Naeemullah

et al. 2023

SCE

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Microbial fuel cell (MFC) is a green technology and is an alternative energy resource of fossil fuels. MFC is the class of Bio-electro-chemical patterns with novel property, like wastewater treatment, electricity generation and biosensor operation. MFCs are ingenious devices that harness the power of bio-electrochemical processes to generate electric current by breaking down organic waste found in wastewater. These systems establish a fascinating connection between microbial metabolism and electricity production. The microbes within the MFCs thrive on the nutrients present in their environment and convert the energy stored in the organic matter into usable electricity. This electrical energy can be effectively utilized to power various essential portable electronic devices such as mobile phones, laptops, TVs, air dryers, threading machines, chargeable torches, as well as devices used in the air force, outer space, and weather stations. The maximum power produced by MFC using an Iron anode is 170 mW·m-2, 0.645 v, while MFCs have better power efficiency in mix culture Microbs 30 mA, 3,600 mW·m-2. It has been observed that MFCs equipped with carbon-based electrodes tend to have a longer lifespan compared to those using metal-based electrodes. However, one drawback of carbon-based electrode MFCs is that they generally exhibit lower power output. In recent times, the investment focus on MFC research has significantly improved the analysis of its chemical, microbiological, and electrochemical aspects. These advancements have led to notable enhancements in the sensing capabilities of MFCs. In this review, we have summarized the MFCs, their working principle, types, composition and the various factors which affect the performance of these MFCs.

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Section: Anodic Reaction: Chmentioning

confidence: 99%

Microbial Fuel Cell, Their Type, Working Principle and Different Factors Affecting Their Performance: A Review

Dileep Ahmad,

Muhammad Haroon,

Naeemullah

et al. 2023

SCE

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“…Electron transfer is essential for bacterial energy metabolism and survival ( Gomaa et al, 2022 ). Electron transfer is an essential link in bacterial respiration ( Shi et al, 2016 ).…”

Section: Antibacterial Mechanism Of Mg- Zn- and Fe-based Alloys As Or...mentioning

confidence: 99%

Mg-, Zn-, and Fe-Based Alloys With Antibacterial Properties as Orthopedic Implant Materials

Wang

Shi

et al. 2022

Front. Bioeng. Biotechnol.

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Implant-associated infection (IAI) is one of the major challenges in orthopedic surgery. The development of implants with inherent antibacterial properties is an effective strategy to resolve this issue. In recent years, biodegradable alloy materials have received considerable attention because of their superior comprehensive performance in the field of orthopedic implants. Studies on biodegradable alloy orthopedic implants with antibacterial properties have gradually increased. This review summarizes the recent advances in biodegradable magnesium- (Mg-), iron- (Fe-), and zinc- (Zn-) based alloys with antibacterial properties as orthopedic implant materials. The antibacterial mechanisms of these alloy materials are also outlined, thus providing more basis and insights on the design and application of biodegradable alloys with antibacterial properties as orthopedic implants.

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“…Electroactive bacteria are known to have two main mechanisms by which electrons are harnessed, (1) direct electron transfer (DET) where electrons move inward or outward via direct contact with the electrode using nanowires or biofilm formation and (2) mediated electron transfer (MET) by which electrons move via an electron shuttle compound. Several gram-positive and gram-negative bacteria were reported to have electroactivity and electroactive enhancing strategies were reviewed [ 1 , 9 ]. The use of MFC in dye decolorization has been proven to be efficient [ 13 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Shewanella chilikensis MG22 isolated from tannery site for malachite green decolorization in microbial fuel cell: a proposed solution for recirculating aquaculture system (RAS)

Efraim,

Saeed,

Elbaz

et al. 2023

Microb Cell Fact

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Malachite Green (MG) dye of the triphenylmethane group is a toxic compound used in the aquaculture industry as an antifungal agent, however, it can accumulate in fish and pose toxicity. The present work aims to remove MG in Microbial Fuel Cell (MFC) as a sustainable and eco-friendly solution. Out of six samples, the highest malachite green degradation was obtained by a sample obtained from Robiki tannery site in agar plates in 24 h at 37 °C. Robiki sample was used to inoculate the anodic chamber in Microbial Fuel cell, the resulting average electricity production was 195.76 mV for two weeks. The decolorization average was almost 88%. The predominant bacteria responsible for MG decolorization and electricity production were identified using 16S rRNA as Shewanella chilikensis strain MG22 (Accession no. OP795826) and formed a heavy biofilm on the anode. At the end of the decolorization process, MG was added again for re-use of water. The results showed efficiency for re-use 3 times. To ensure the sterility of treated water for re-use, both UV and filter sterilization were used, the latter proved more efficient. The obtained results are promising, MFC can be used as recirculating aquaculture system (RAS). The same aquaculture water can be treated multiple times which provides a sustainable solution for water conservation. Graphical Abstract

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Electron transfer in Gram-positive bacteria: enhancement strategies for bioelectrochemical applications

Cited by 13 publications

References 97 publications

Microbial Fuel Cell, Their Type, Working Principle and Different Factors Affecting Their Performance: A Review

Microbial Fuel Cell, Their Type, Working Principle and Different Factors Affecting Their Performance: A Review

Mg-, Zn-, and Fe-Based Alloys With Antibacterial Properties as Orthopedic Implant Materials

Shewanella chilikensis MG22 isolated from tannery site for malachite green decolorization in microbial fuel cell: a proposed solution for recirculating aquaculture system (RAS)

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