Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Extracellular Electron Transfer"”.
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Optimization of Quinone-Based, Extracellular Electron Transfer Mediators for Bioelectronic Applications
… have evolved to respire onto non-oxygen terminal electron acceptors (TEAs). A subset of these organisms, also known as metal reducing (MR) bacteria, can produce a usable electric current. Production of electric current makes MR bacteria of interest for the development of bioelectronic devices like …
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Strategies to enhance extracellular electron transfer rates in wild-type cyanobacterium Synechococcus elongatus PCC7942 for photo-bioelectricity generation
The aim of this thesis is to enhance the extracellular electron transfer rates (exoelectrogenesis) in cyanobacteria, to be utilised for photo-bioelectricity generation in biophotovoltaics (electrochemical cell). An initial cross comparison of the cyanobacterium Synechococcus elongatus PCC7942 …
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MICROBIAL FUEL CELLS AS A PROMISING TECHNOLOGY FOR SIMULTANEOUS WASTEWATER TREATMENT AND BIOELECTRICITY GENERATION
… stored in waste into electrical energy through extracellular electron transfer between microorganisms and an electrode surface, MFCs have several advantages over the conventional activated sludge method, such as elimination of the need for an external energy source, no excessive sludge …
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Electrical current generation by wild type and mutant Shewanella strains
… been reported to have the capacity to couple the transfer of electrons to insoluble metal oxides and solid carbon electrodes with cellular growth. While this process may be useful as an energy generation strategy or biotechnological tool, the electron transfer pathway by which this process occurs …
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Engineering outer-membrane electron transfer proteins for modular biotic-abiotic interfacing with living cells
… utilises the MtrCAB protein complex to transfer electrons across the outer membrane, forming a biotic-abiotic interface that can be harnessed for energy generation, biosensing, microbial electrosynthesis and cell signalling. Within this complex, the decaheme cytochromes MtrC and MtrA are …
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Low strength wastewater treatment using emerging anaerobic treatment processes
… processes because of possible interspecies mass transfer limitations and membrane fouling in AnMBRs. Till now, little is known about how short HRTs would affect effluent water quality that is linked to the specific affinity of anaerobic sludge and their microbial community structures in AnMBRs. …
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Bioreduction of Hematite Nanoparticles by Shewanella oneidensis MR-1
… The study shows that an alternative extracellular electron transfer mechanism other than the classical 'direct-contact' mechanism may be simultaneously employed by Shewanella oneidensis MR-1 during solid-phase metal reduction. This conclusion is supported by analysis of the …
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Electrical-phenotyping of the bacterial envelope using microfluidics
… Electrochemically active bacteria transport electrons directly from their interior to external insoluble electron accepters, e.g. metal oxides or electrodes in electrochemical systems, via a process known as extracellular electron transfer (EET), holding an exciting promise in energy …
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Optimizing electrogenic activity from photosynthetic bacteria in bioelectrochemical systems
… photosynthetic biology. A set of metabolic electron sinks were deleted to remove a selection of pathways that might compete with extracellular electron transfer (EET). The combined deletion of a bi-directional hydrogenase – HoxH, nitric oxide reductase – NorB, cytochrome-c oxidase – COX, …
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Enhancing energy recovery from industrial wastewater using microbial fuel cells
… electricity recovery from MFCs, mechanisms of electron transfer need to be understood. The contribution of direct electron transfer mechanisms to overall electron transfer was investigated for the first time by restricting S. oneidensis cells close to or away from an anode electrode. A maximum …
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Towards unravelling the mechanism and function of exoelectrogenesis in cyanobacteria
… algae and cyanobacteria, are able to export electrons derived from the photosynthetic electPhotosynthetic microorganisms, including algae and cyanobacteria, are able to export electrons derived from the photosynthetic electron transport chain to the cell exterior, in a phenomenon known as …
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Long-range extracellular electron transport by dissimilatory metal-reducing bacteria across a physical separation
… and Mn oxides that are often the most abundant electron acceptors for microbial respiration. The reduction of these minerals is catalyzed almost exclusively by dissimilatory metal-reducing bacteria (DMRB) that are defined by their ability to gain energy by coupling the oxidation of organic …
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Electrogenetic pathways in cyanobacteria
… energy from the environment by coupling charge-transfer reactions between available electron donors and acceptors with the generation of electrochemical gradients across cellular membranes. The variety of strategies that organisms have evolved to harness the many environmental sources of energy …