Journal ArticleDOI
Microbial electrochemistry and technology: terminology and classification
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TLDR
In this article, the authors introduce a classification of technologies based on interfacing microbiology and electrochemistry and argue that BESs comprise all systems based on bioelectrochemistry, with a further layer of termini through the use of METs.Abstract:
Microbial electrochemistry is the study and application of interactions between living microbial cells and electrodes (i.e. electron conductors, capacitive materials). For a long time this subfield of bioelectrochemistry has been the interest of mainly fundamental researchers. This has considerably changed during the last decade and microbial electrochemistry gained interest from applied researchers and engineers. These researchers took the microbial fuel cell (MFC), which is a system that converts the chemical energy of organic material in wastewater into electric power, from a concept to a technology. In addition, a plethora of derivative technologies, such as microbial electrolysis cells (MECs), microbial desalination cells (MDCs), photomicrobial fuel cells (photoMFCs), microbial electrosynthesis (MES), and biocomputing have been developed. The growing number of systems is often referred to in literature under the termini bioelectrochemical system (BES), microbial electrochemical technology (MET), or electrobiotechnology. Within this article we introduce a classification of technologies based on interfacing microbiology and electrochemistry. We argue that BESs comprise all systems based on bioelectrochemistry, with a further layer of termini through the use of METs. Primary METs are based on extracellular electron transfer (direct or mediated), whereas secondary METs include systems in which electrochemistry is connected – at least through ionic contact – with a microbial process via the electrochemical control or adaptation of environmental parameters, such as pH or metabolite concentration level.read more
Citations
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Modern Electrochemical Aspects for the Synthesis of Value-Added Organic Products.
Sabine Möhle,Michael Zirbes,Eduardo Rodrigo,Tile Gieshoff,Anton Wiebe,Anton Wiebe,Siegfried R. Waldvogel,Siegfried R. Waldvogel +7 more
TL;DR: This Review surveys many of the recent seminal important developments which will determine the future of this dynamic emerging field of organic synthesis.
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Overview of pretreatment strategies for enhancing sewage sludge disintegration and subsequent anaerobic digestion: Current advances, full-scale application and future perspectives
TL;DR: In this article, an up-to-date review of recent research achievements in the pretreatment technologies used for improving biogas production including mechanical (ultrasonic, microwave, electrokinetic and high-pressure homogenization), thermal, chemical (acidic, alkali, ozonation, Fenton and Fe(II)-activated persulfate oxidation), and biological options (temperature-phased anaerobic digestion and microbial electrolysis cell).
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Recent advances in the use of different substrates in microbial fuel cells toward wastewater treatment and simultaneous energy recovery
TL;DR: In this paper, the performance of different types (designs) of MFCs in terms of electric current and power outputs together with the wastewater treatment efficiency, including chemical oxygen demand (COD) removal and columbic efficiency (CE), is presented.
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The ins and outs of microorganism–electrode electron transfer reactions
Amit Kumar,Leo Hsu,Paul Kavanagh,Frédéric Barrière,Piet N.L. Lens,Piet N.L. Lens,Laure Lapinsonnière,John H. Lienhard,Uwe Schröder,Xiaocheng Jiang,Dónal Leech +10 more
TL;DR: In this paper, the authors outline the mechanisms by which electrons are transferred between microorganisms and electrodes, and describe the challenges involved in designing robust and efficient systems, as well as present a review of the current state of the art.
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Metals removal and recovery in bioelectrochemical systems: A review.
TL;DR: This article reviews the state of art research of bioelectrochemical systems for removal and recovery of metal(loid) ions and pertaining removal mechanisms.
References
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Exoelectrogenic bacteria that power microbial fuel cells
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Journal ArticleDOI
Electrically conductive bacterial nanowires produced by Shewanella oneidensis strain MR-1 and other microorganisms
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TL;DR: Nanowires produced by the oxygenic phototrophic cyanobacterium Synechocystis PCC6803 and the thermophilic, fermentative bacterium Pelotomaculum thermopropionicum reveal that electrically conductive appendages are not exclusive to dissimilatory metal-reducing bacteria and may, in fact, represent a common bacterial strategy for efficient electron transfer and energy distribution.
Journal ArticleDOI
Shewanella secretes flavins that mediate extracellular electron transfer
Enrico Marsili,Daniel B. Baron,Indraneel D. Shikhare,Dan Coursolle,Jeffrey A. Gralnick,Daniel R. Bond +5 more
TL;DR: In situ demonstration of flavin production, and sequestration at surfaces, requires the paradigm of soluble redox shuttles in geochemistry to be adjusted to include binding and modification of surfaces.
Journal ArticleDOI
Bug juice: harvesting electricity with microorganisms
TL;DR: A new form of microbial respiration has recently been discovered in which microorganisms conserve energy to support growth by oxidizing organic compounds to carbon dioxide with direct quantitative electron transfer to electrodes.
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