Bioelectrosynthesis of Organic and Inorganic Chemicals in Bioelectrochemical System

Naha, Sunandan; Joshi, Chetan; Chandrashekhar, B.; Sreekrishnan, T.R.; Goswami, Pranab; Sevda, Surajbhan

doi:10.1061/(asce)hz.2153-5515.0000491

Cited by 12 publications

(1 citation statement)

References 77 publications

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“…Energy crisis and environmental pollution are one of the major global issues that the world is facing today. The bioelectrochemical system (BES), including microbial fuel cell (MFC) and microbial electrosynthesis (MES), has been regarded as a promising technology for energy generation, resource recovery, environmental remediation, and chemical production ( Bajracharya et al, 2016 ; Chen et al, 2020a ; Naha et al, 2020 ; Rout et al, 2020 ). In a MFC system, the microorganisms transfer electrons to a solid-substrate for the generation of electrical power coupled to the oxidation of organic or inorganic matters in the wastewater ( Santoro et al, 2017 ).…”

Section: Introductionmentioning

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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