Electrosynthesis, modulation, and self-driven electroseparation in microbial fuel cells.

Autor:	Gajda I; Bristol BioEnergy Centre, Bristol Robotics Laboratory, T-Block, Frenchay Campus, University of the West of England (UWE Bristol), Bristol BS16 1QY, UK., You J; Bristol BioEnergy Centre, Bristol Robotics Laboratory, T-Block, Frenchay Campus, University of the West of England (UWE Bristol), Bristol BS16 1QY, UK., Mendis BA; Bristol BioEnergy Centre, Bristol Robotics Laboratory, T-Block, Frenchay Campus, University of the West of England (UWE Bristol), Bristol BS16 1QY, UK., Greenman J; Bristol BioEnergy Centre, Bristol Robotics Laboratory, T-Block, Frenchay Campus, University of the West of England (UWE Bristol), Bristol BS16 1QY, UK., Ieropoulos IA; Bristol BioEnergy Centre, Bristol Robotics Laboratory, T-Block, Frenchay Campus, University of the West of England (UWE Bristol), Bristol BS16 1QY, UK.
Jazyk:	angličtina
Zdroj:	IScience [iScience] 2021 Jul 21; Vol. 24 (8), pp. 102805. Date of Electronic Publication: 2021 Jul 21 (Print Publication: 2021).
DOI:	10.1016/j.isci.2021.102805
Abstrakt:	Microbial electrosynthesis (MES) represents a sustainable platform that converts waste into resources, using microorganisms within an electrochemical cell. Traditionally, MES refers to the oxidation/reduction of a reactant at the electrode surface with externally applied potential bias. However, microbial fuel cells (MFCs) generate electrons that can drive electrochemical reactions at otherwise unbiased electrodes. Electrosynthesis in MFCs is driven by microbial oxidation of organic matter releasing electrons that force the migration of cationic species to the cathode. Here, we explore how electrosynthesis can coexist within electricity-producing MFCs thanks to electro-separation of cations, electroosmotic drag, and oxygen reduction within appropriately designed systems. More importantly, we report on a novel method of in situ modulation for electrosynthesis, through additional "pin" electrodes. Several MFC electrosynthesis modulating methods that adjust the electrode potential of each half-cell through the pin electrodes are presented. The innovative concept of electrosynthesis within the electricity producing MFCs provides a multidisciplinary platform converting waste-to-resources in a self-sustainable way. Competing Interests: I.A.I. and J.G. have a patent (no. WO2016120641A1) related to part of this work, which is mentioned in the main text. The other authors declare no competing interests. (© 2021 The Author(s).)
Databáze:	MEDLINE
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