Improving the extracellular electron transfer of Shewanella oneidensis MR-1 for enhanced bioelectricity production from biomass hydrolysate

Wang, Yan‐Zhai; Shen, Yu; Liao, Zhi-Hong; Sun, Jianzhong; Yong, Yang‐Chun

doi:10.1039/c7ra04106c

Cited by 26 publications

(12 citation statements)

References 47 publications

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“…The maximum PD provided by this MFC was 17.2 ± 0.3 mW/m 2 , demonstrating the viability of biomass hydrolysate as a source of power production in MFC. A high PD of 660 mW/m 2 from the hydrolysate with a pure-culture of Shewanella oneidensis MR-1 could also be obtained by integrating electrode alteration and electron shuttle attachment [25]. Ionic liquids have also been stated to be beneficial due to their thermal stability, low hydrophobicity, low toxicity, and increased electrochemical stability [26].…”

Section: Acid Pretreatmentmentioning

confidence: 99%

Agricultural Waste and Wastewater as Feedstock for Bioelectricity Generation Using Microbial Fuel Cells: Recent Advances

et al. 2021

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In recent years, there has been a significant accumulation of waste in the environment, and it is expected that this accumulation may increase in the years to come. Waste disposal has massive effects on the environment and can cause serious environmental problems. Thus, the development of a waste treatment system is of major importance. Agro-industrial wastewater and waste residues are mainly rich in organic substances, lignocellulose, hemicellulose, lignin, and they have a relatively high amount of energy. As a result, an effective agro-waste treatment system has several benefits, including energy recovery and waste stabilization. To reduce the impact of the consumption of fossil energy sources on our planet, the exploitation of renewable sources has been relaunched. All over the world, efforts have been made to recover energy from agricultural waste, considering global energy security as the final goal. To attain this objective, several technologies and recovery methods have been developed in recent years. The microbial fuel cell (MFC) is one of them. This review describes the power generation using various types of agro-industrial wastewaters and agricultural residues utilizing MFC. It also highlights the techno-economics and lifecycle assessment of MFC, its commercialization, along with challenges.

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Section: Acid Pretreatmentmentioning

confidence: 99%

Agricultural Waste and Wastewater as Feedstock for Bioelectricity Generation Using Microbial Fuel Cells: Recent Advances

et al. 2021

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“…The power output was shown to improve to 0.693 ± 0.036 W m –2 on an inkjet-printed polyaniline modified carbon paper electrode . In a “straw hydrolysate MFC” constructed with polyaniline modified carbon cloth in combination with riboflavin addition, pure cultures of S. oneidensis MR-1 produced 0.66 W m –2 . Recently.…”

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confidence: 99%

Enhanced Bioelectrocatalysis of Shewanella oneidensis MR-1 by a Naphthoquinone Redox Polymer

et al. 2017

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Shewanella oneidensis MR-1 is the model organism used in microbial fuel cells (MFCs). A great deal of research has focused on this bacterium to improve extracellular electron transfer (EET) and subsequently the power output in MFCs. Here, we report on the enhanced bioelectrocatalysis of S. oneidensis MR-1 by using a naphthoquinone redox polymer (NQ-LPEI) on a modified carbon felt electrode. A maximum anodic current of 3.70 ± 0.40 A m–2 is obtained in a three-electrode setup, a value 15 times higher than that obtained for an anode that did not contain the NQ-LPEI redox polymer (0.24 ± 0.05 A m–2). Additionally, a maximum power output of 0.53 ± 0.02 W m–2 was obtained in single-chamber MFCs where the NQ-LPEI modified anode was utilized. The power output was significantly higher than that obtained for MFCs with unmodified anodes (0.19 ± 0.05 W m–2). These findings suggest that NQ-LPEI could be used with known electrogenic microorganisms to further improve the performances of MFCs.

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“…These two chambers were separated by a pretreated 4 cm 2 Nafion-117 proton exchange membrane (Dupont Co., United States). The electrolyte in chambers was composed of 95% M9 buffer (17.8 gL −1 Na 2 HPO 4 ⋅12H 2 O, 3.0 gL −1 KH 2 PO 4 , 1.0 gL −1 NH 4 Cl, 0.5 gL −1 NaCl, 1.0 mM MgSO 4 ⋅7H 2 O, 0.1 mM CaCl 2 ⋅2H 2 O) with 5% LB medium ( Wang et al, 2017 ). S. oneidensis MR-1 cells in the mid-exponential growth phase were harvested by centrifugation, washed twice with M9 buffer, and re-suspended in the cathode electrolyte supplemented with 1.8 mM lactate.…”

Section: Methodsmentioning

confidence: 99%

Tuning Redox Potential of Anthraquinone-2-Sulfonate (AQS) by Chemical Modification to Facilitate Electron Transfer From Electrodes in Shewanella oneidensis

Wang

et al. 2021

Front. Bioeng. Biotechnol.

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Bioelectrochemical systems (BESs) are emerging as attractive routes for sustainable energy generation, environmental remediation, bio-based chemical production and beyond. Electron shuttles (ESs) can be reversibly oxidized and reduced among multiple redox reactions, thereby assisting extracellular electron transfer (EET) process in BESs. Here, we explored the effects of 14 ESs on EET in Shewanella oneidensis MR-1, and found that anthraquinone-2-sulfonate (AQS) led to the highest cathodic current density, total charge production and reduction product formation. Subsequently, we showed that the introduction of -OH or -NH2 group into AQS at position one obviously affected redox potentials. The AQS-1-NH2 exhibited a lower redox potential and a higher Coulombic efficiency compared to AQS, revealing that the ESs with a more negative potential are conducive to minimize energy losses and improve the reduction of electron acceptor. Additionally, the cytochromes MtrA and MtrB were required for optimal AQS-mediated EET of S. oneidensis MR-1. This study will provide new clues for rational design of efficient ESs in microbial electrosynthesis.

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Improving the extracellular electron transfer of Shewanella oneidensis MR-1 for enhanced bioelectricity production from biomass hydrolysate

Abstract: Direct electricity production from biomass hydrolysate by microbial fuel cells (MFC) holds great promise for the development of the sustainable biomass industry.

Cited by 26 publications

References 47 publications

Agricultural Waste and Wastewater as Feedstock for Bioelectricity Generation Using Microbial Fuel Cells: Recent Advances

Agricultural Waste and Wastewater as Feedstock for Bioelectricity Generation Using Microbial Fuel Cells: Recent Advances

Enhanced Bioelectrocatalysis of Shewanella oneidensis MR-1 by a Naphthoquinone Redox Polymer

Tuning Redox Potential of Anthraquinone-2-Sulfonate (AQS) by Chemical Modification to Facilitate Electron Transfer From Electrodes in Shewanella oneidensis

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