Microbial electrochemical systems (MESs) are devices which carry out electrochemical reactions by utilizing the microbial biofilms formed at the electrode (Rittmann, 2018).These systems have evolved as a unique approach in treating wastewaters, bioremediating, producing high value chemicals, and generating bioelectricity.
Exoelectrogenic microorganisms Pure culture experiments have shown that many micro-organisms, from all three domains of life, are exoelectro-genic16 (Fig. 2a), including bacteria in the Firmicutes and
Illustration of the Extracellular electron transfer in the microbial electrochemical systems. The direct microbial electro transfer (DET) is enabled through the growing of nanowires (I), or by the formation of a conductive layer at the microbial cell wall (III).The mediated electron transfer (MET) was conducted either via the naturally secreted mediators (II) or by the chemically utilized ...
0123456789();: The term electromicrobiology has its roots in the study of microbial electron exchange with electrodes 1 and is typi - cally associated with current-generating ''microbial fuel
where Δ δ b i n d ∞ is the maximal chemical shift perturbation of the NMR signals resulting from the complex formation between Cyt A and Cyt B, K d is the dissociation constant, [Cyt A] 0 is the initial concentration of Cyt A, and [Cyt B] 0 is the stock concentration of Cyt B.Binding affinities between the membrane multiheme cytochromes CymA and MtrA from …
Understanding of the extreme microorganisms that possess extracellular electron transfer (EET) capabilities is pivotal to advance electromicrobiology discipline and to develop niche-specific ...
Electroactive bacteria (EAB) are natural microorganisms (mainly Bacteria and Archaea) living in various habitats (e.g., water, soil, sediment), including extreme ones, which can interact ...
Organic electrode materials (OEMs) possess low discharge potentials and charge‒discharge rates, making them suitable for use as affordable and eco-friendly …
Electronic Materials and Organisms. Our interest in this thrust ranges from studying novel semiconductors to electroactive organisms. Over the past several years, we have been pioneering the materials processing and fundamental …
The microbial fuel cell (MFC) is used to evaluate the electricity‐producing activity of endophytic bacteria in plant tissues, and the species distribution of micro‐organisms in the anode of the MFC after inoculation of plant tissues is determined by high‐throughput sequencing.
COFs are porous, crystalline polymers with periodically organized networks connected by covalent bonds between light atoms such as C, N, and O. Directed by reticular chemistry, 2D or 3D COFs are constructed by selecting building blocks and bonding linkages …
Electroactive microorganisms (EAMs) are those with the ability to carry out the flow and exchange of electrons between intracellular and extracellular redox-active electron donors and acceptors (Potter, 1911).Electroactivity refers to the extracellular electron transfer (EET) efficiency and capacity of biofilm formation (Koch and Harnisch, 2016b). ...
Energy storage and conversion are vital for addressing global energy challenges, particularly the demand for clean and sustainable energy. Functional organic materials are gaining interest as …
While electrogenic, or electricity-producing, Gram-negative bacteria predominantly found in anaerobic habitats have been intensively explored, the potential of Gram-positive microbial electrogenic capability residing in a similar anoxic environment has not been considered. Because Gram-positive bacteria contain a thick non-conductive cell wall, they …
Electroactive microorganisms acting as microbial electrocatalysts have intrinsic metabolisms that mediate a redox potential difference between solid electrodes and microbes, leading to spontaneous ...
This study explores the development of an artificial lateral line system using electroactive polymer (EAP) sensors, specifically, ionic polymer-metal composites (IPMCs) and polymer gels. A TPU-based canal structure was 3D printed with two embedded surface TPU-DBA polymer gel sensors at each pore entrance, enabling the detection of hydrodynamic pressure …
Based on research, electroactive microbes indulge in transport of electrons onto an external surface with the aid of two mechanisms: natural production of electro-mediatory metabolites, and produced cell surface associated systems like nanowires (Kumar et al. 2016).Studying the electrophysiology of Shewanella spp, it became obvious that the reduction …
Electroactive polymers (EAPs) are an advanced family of polymers that change their shape through electric stimulation and have been a point of interest since their inception. This unique functionality has helped …
Microbial electrochemical technologies (METs) have become the focus of intense fundamental and applied research to harness the vast metabolic versatility of microorganisms towards sustainable industrial processes (Logan and Rabaey, 2012).The versatility of the concept has spawned a veritable zoo of device designs among which microbial fuel cells (MFC) and …
Fonseca et al. The Effect of Orthologous Proteins STC orthologous are from S igidimarinaand S.algae, which reflect the different environments that these organisms can be
The growing interest on sustainable biotechnological processes for the production of energy and industrial relevant organic compounds have increased the discovery of electroactive organisms (i.e. organisms that are able to exchange electrons with an electrode) and the characterization of their extracellular electron transfer mechanisms.
A vast array of microorganisms from all three domains of life can produce electrical current and transfer electrons to the anodes of different types of bioelectrochemical systems. These exoelectrogens are typically iron-reducing bacteria, such as Geobacter sulfurreducens, that produce high power den …
Cultivating electroactive microbes—from field to bench, Mon Oo Yee, Joerg Deutzmann, Alfred Spormann, Amelia-Elena Rotaru
A vast array of microorganisms from all three domains of life can produce electrical current and transfer electrons to the anodes of different types of bioelectrochemical systems.
Organic electrode materials (OEMs) can deliver remarkable battery performance for metal-ion batteries (MIBs) due to their unique molecular versatility, high flexibility, versatile structures, …
Aims Electroactive micro-organisms play a significant role in microbial fuel cells. It is necessary to discover potential resources in plant endophytes. In this study, plant tissues were selected to...
1 Introduction. Discovering and engineering electrocatalysts to speed up reactions with electrons and chemical species are crucial for a carbon-neutral economy. [] Metal–air …
This is a critical review of the advances in the molecular design of organic electroactive molecules, which are the key components for redox flow batteries (RFBs).
Microbial electrocatalysis relies on microorganisms as catalysts for reactions occurring at electrodes. Microbial fuel cells and microbial electrolysis cells are well known in …
This review describes and compares key microbiological features of different EAB and focuses on achievements and future prospects of genetic manipulation for efficient strain development. In nature, different bacteria have evolved strategies to transfer electrons far beyond the cell surface. This electron transfer enables the use of these bacteria in bioelectrochemical …
Electroactive microorganisms can exchange electrons with other cells or conductive interfaces in their extracellular environment. This property opens the way to a broad range of practical biotechnological applications, from manufacturing sustainable chemicals via electrosynthesis, to bioenergy, bioelectronics or improved, low-energy demanding wastewater …
Electroactive microorganisms acting as microbial electrocatalysts have intrinsic metabolisms that mediate a redox potential difference between solid electrodes and microbes, leading to spontaneous electron transfer to the electrode (exo-electron transfer) or electron uptake from the electrode (endo-electron transfer).
Gram-negative mesophilic bacteria are one of the most studied class of electroactive organisms, with most of the knowledge being confined to the model organisms Geobacter sulfurreducens and Shewanella oneidensis MR-1 [2], [3], [24].Nonetheless, Gram-positive bacteria have recently attracted the scientific attention, given their capacity in …
Electroactive microorganisms can transfer electrons to or take them up from electrodes, and they are used in applications such as microbial fuel cells. In this Review, Logan …
In nature, different bacteria have evolved strategies to transfer electrons far beyond the cell surface. This electron transfer enables the use of these bacteria in …
More particular, electrons are transferred from the electron donor to intracellular electron carriers (e.g., NAD +), subsequently further to the electron-transport chain (ETC) and finally to the TEA.Microorganisms can obtain different …
Organic material-based rechargeable batteries have great potential for a new generation of greener and sustainable energy storage solutions [1, 2].They possess a lower …
In nature, different bacteria have evolved strategies to transfer electrons far beyond the cell surface. This electron transfer enables the use of these bacteria in bioelectrochemical systems (BES), such as microbial fuel cells (MFCs) and microbial electrosynthesis (MES).
Biofilm Formation: Benefits of Living Together. The success of microbes on Earth in terms of biomass and habitat distribution can be attributed in large part to their phenotypic plasticity, which makes them resilient to environmental stimuli (Costerton et al., 1995).Part of this plasticity is the tendency of many bacteria to form biofilms.
