Electrical tension-triggered conversion of anaerobic to aerobic respiration of <i>Shewanella putrefaciens</i> CN32 cells while promoting biofilm growth in microbial fuel cells

He, Xuesong; Wu, Xiaoshuai; Qiao, Yan; Hu, Tianbao; Wang, Deng; Han, Xiao; Li, Chang Ming

doi:10.1039/d0cc01605e

Cited by 5 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8 It is to be noted that Shewanella putrefaciens was recently found to promote bidirectional extracellular electron transfer 29 and the growth of biofilm in MFCs. 30 On the other hand, an MFC that used Shewanella oneidensis MR-1 cultured in bamboofermented effluent has shown agreeable performance results with this work. 31 It was observed that the generated power from a Shewanella oneidensis MR-1 in an MFC can be enhanced with the adoption of ferric iron as reported by Wu et al 32 While the COD removal of an MFC, which used Shewanella oneidensis MR-1, can be improved by the implementation of a biomass-based anodic substrate, as shown by Baniasadi and Vahabzadeh.…”

Section: Experiments Verification and Mathematical Modelsupporting

confidence: 81%

Effect of nanowire conductive transfer on the performance of batch‐microbial fuel cells

Wang

Lan

Ubando

et al. 2021

Intl J of Energy Research

View full text Add to dashboard Cite

Microbial fuel cells (MFCs) are a promising technology that uses microorganisms to simultaneously generate bioelectricity while treating wastewater. To further improve the performance of the MFC, it is essential to understand and evaluate the electron transfer mechanism. However, redesigning the electron transfer mechanism of MFCs through an experimental approach is costly and time-consuming. Hence, in this study, a numerical modeling approach is implemented through the Nernst-Monod kinetic equation, which is validated by experimental results. A nanowire conductive transferring pathway is considered between the microorganisms and anode electrodes of a batch-type MFC. Moreover, two types of bacteria are utilized such as the Shewanella oneidensis MR-1 and Shewanella putrefacient with substrate concentrations of 0.5 M sodium lactate. The results have shown that the limiting current density of the MFC from the computational model is 1514 mA m À2 . On the other

show abstract

Section: Experiments Verification and Mathematical Modelsupporting

confidence: 81%

Effect of nanowire conductive transfer on the performance of batch‐microbial fuel cells

Wang

Lan

Ubando

et al. 2021

Intl J of Energy Research

View full text Add to dashboard Cite

show abstract

“…The core genes related to the iron transport system that was reported in our previous work (He et al, 2020) include heme ABC transporter ATP-binding protein (hABCATP), hemin ABC transporter substrate-binding protein (hemeABC), energy transducer TonB (enTonB), and iron ABC transporter permease (iron ABC). Additionally, the target genes encompass both the core genes related to the iron transport system and the outer membrane electron transfer-related genes (mtrA, mtrB, mtrC, undA, feoA, feoB) of S. putrefaciens CN32 (Wu et al, 2018b;Zou et al, 2019).…”

Section: Target Genes Selections and Validation Of Target Genes By Re...mentioning

confidence: 99%

Promotion of direct electron transfer between Shewanella putrefaciens CN32 and carbon fiber electrodes via in situ growth of α-Fe2O3 nanoarray

He,

Lu,

et al. 2024

Front. Microbiol.

Self Cite

View full text Add to dashboard Cite

The iron transport system plays a crucial role in the extracellular electron transfer process of Shewanella sp. In this study, we fabricated a vertically oriented α-Fe2O3 nanoarray on carbon cloth to enhance interfacial electron transfer in Shewanella putrefaciens CN32 microbial fuel cells. The incorporation of the α-Fe2O3 nanoarray not only resulted in a slight increase in flavin content but also significantly enhanced biofilm loading, leading to an eight-fold higher maximum power density compared to plain carbon cloth. Through expression level analyses of electron transfer-related genes in the outer membrane and core genes in the iron transport system, we propose that the α-Fe2O3 nanoarray can serve as an electron mediator, facilitating direct electron transfer between the bacteria and electrodes. This finding provides important insights into the potential application of iron-containing oxide electrodes in the design of microbial fuel cells and other bioelectrochemical systems, highlighting the role of α-Fe2O3 in promoting direct electron transfer.

show abstract

“…(24) Next to the anode, there was the presence of S. putrefaciens CN32 cells and its global gene expression showed that due to anaerobic respiration, there was increased production of flavin and synthesis of cytochrome C. This results in electron transfer in the long-distance and also helps in biofilm formation. (40) There had been numerous microbial fuel cells that are applied for the treatment of wastewater, but due to the appearance of the nitrogen, induces unreliability in the performance by varying contents of the working biofilms. (41) The ShewanellaOneidensis MR-1 grew for over fifty days and lactate was not oxidized fully into acetate which had the huge recovery of electrons gained as electricity.…”

Section: Microbial Fuel Cell (Mfc)mentioning

confidence: 99%

Microbial Fuel Cells and Genomics: A Review

Meda¹,

Rath²,

Rao³

et al. 2022

ECS Trans.

View full text Add to dashboard Cite

With the depletion of fossil fuels, the world is looking towards green energy for electricity production and environmentalists are emphasizing the importance of green energy production. The huge production of biodegradable waste from various sources that are not recycled or treated appropriately is polluting the natural resources. There are many challenges associated with the disposal or reuse of biowastes and in this scenario Microbial Fuel Cells (MFCs) comes into the picture. MFCs generate electricity and hydrogen using wastewater and also bring down the concentration of organic pollutants present in the wastewater thereby purifying it to an extent. Exoelectrogens either present in the wastewater or added externally break down the organic matter into simpler compounds. Distinct parameters that significantly influence the performance of MFC are the microorganisms and to enhance the working, various microorganisms need to be explored and the best ones should be employed. With the help of genomics, we found out the microorganisms that are suitable for enhancing the efficiency of MFC. This was done with the help of certain tools of genomics. MFC and genomics are two varied and diverse topics and in this review paper we try to bridge the gap between them.

show abstract

Electrical tension-triggered conversion of anaerobic to aerobic respiration of Shewanella putrefaciens CN32 cells while promoting biofilm growth in microbial fuel cells

Abstract: A global gene expression analysis of S. putrefaciens CN32 cells within the diffusion layer of the microbial fuel cell anode with surface controlled reaction reveals an electrical tension-triggered conversion of anaerobic to aerobic respiration, which represents the nature of the biofilm.

Cited by 5 publications

References 28 publications

Effect of nanowire conductive transfer on the performance of batch‐microbial fuel cells

Effect of nanowire conductive transfer on the performance of batch‐microbial fuel cells

Promotion of direct electron transfer between Shewanella putrefaciens CN32 and carbon fiber electrodes via in situ growth of α-Fe2O3 nanoarray

Microbial Fuel Cells and Genomics: A Review

Contact Info

Product

Resources

About