Results 181 to 190 of about 1,466 (214)
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Environmental Science & Technology, 2015
The use of thermophilic microorganisms as biocatalysts for electromethanogenesis was investigated. Single-chamber reactors inoculated with thermophiles and operated at 55 °C showed high CH4 production rates (max. 1103 mmol m(–2) day(–1) at an applied voltage of 0.8 V) with current-capture efficiencies >90%, indicating that thermophiles have high ...
Qian, Fu +5 more
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The use of thermophilic microorganisms as biocatalysts for electromethanogenesis was investigated. Single-chamber reactors inoculated with thermophiles and operated at 55 °C showed high CH4 production rates (max. 1103 mmol m(–2) day(–1) at an applied voltage of 0.8 V) with current-capture efficiencies >90%, indicating that thermophiles have high ...
Qian, Fu +5 more
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Oxygen transport in composite mediated biocathodes
Electrochimica Acta, 2005Abstract A numerical simulation of an enzyme-catalyzed oxygen cathode is presented and applied to the analysis of transport limitations in operating electrodes, with the goal of predicting the limits of obtainable cathode current density. Based on macrohomogeneous and thin-film theories, and accounting for dual-substrate enzyme kinetics, the one ...
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Controlled sequential biocathodic denitrification for contaminated groundwater bioremediation
Science of The Total Environment, 2019Nitrate groundwater contamination is a worldwide concern. In this study, a novel 2-stage, sequential biocathodic denitrification system was tested to perform autotrophic denitrification of synthetic groundwater. The system was operated at different nitrate loading rates (66-301 gNO3--N m-3NCC d-1) at constant NO3--N concentration (40 mgNO3--N L-1), by ...
Daniele Cecconet +3 more
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Methanogenic Biocathode Microbial Community Development and the Role of Bacteria
Environmental Science & Technology, 2017The cathode microbial community of a methanogenic bioelectrochemical system (BES) is key to the efficient conversion of carbon dioxide (CO2) to methane (CH4) with application to biogas upgrading. The objective of this study was to compare the performance and microbial community composition of a biocathode inoculated with a mixed methanogenic (MM ...
Christy M. Dykstra +1 more
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The biocathode of microbial electrochemical systems and microbially-influenced corrosion
Bioresource Technology, 2015The cathode reaction is one of the most important limiting factors in bioelectrochemical systems even with precious metal catalysts. Since aerobic bacteria have a much higher affinity for oxygen than any known abiotic cathode catalysts, the performance of a microbial fuel cell can be improved through the use of electrochemically-active oxygen-reducing ...
Kim, Byung Hong +4 more
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Application of Bacterial Biocathodes in Microbial Fuel Cells
Electroanalysis, 2006AbstractThis review addresses the development and experimental progress of biocathodes in microbial fuel cells (MFCs). Conventional MFCs consist of biological anodes and abiotic cathodes. The abiotic cathode usually requires a catalyst or an electron mediator to achieve high electron transfer, increasing the cost and lowering the operational ...
Zhen He, Largus T. Angenent
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Mixed Culture Biocathodes for Production of Hydrogen, Methane, and Carboxylates
2017Formation of hydrogen, methane, and organics at biocathodes is an attractive new application of bioelectrochemical systems (BESs). Using mixed cultures, these products can be formed at certain cathode potentials using specific operating conditions, of which pH is important.
Ter Heijne, Annemiek +5 more
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Bilirubin Oxidase Biocathodes for Ethanol Biofuel Cells
ECS Transactions, 2007A biological fuel cell is a device that converts biochemical energy into electrical energy using a biocatalyst. The basic principle is that the process of fuel (substrate) oxidation by microorganisms or enzymes in the fuel cells offers electrons and protons for electricity production.
Rodica Duma, Shelley D. Minteer
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Advanced Biocathode and Its Application in Battery
ECS Meeting Abstracts, 2017A novel microorganism of Bioechem proprietary, named P1, promotes high electron transport activity on cathode, shown as the highest cathodic current output than the other reported microorganisms. A biocathode, using P1 as catalyst, was tested in an electrochemical system and showed enhanced performance than abiotic cathode.
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Sustainable photosynthetic biocathode in microbial desalination cells
Chemical Engineering Journal, 2015Microbial desalination cells (MDCs) provide for simultaneous wastewater treatment and desalination while producing clean electricity from the organic wastes. However, one major drawback with MDCs technology is its unsustainable cathode chamber where expensive catalysts and toxic chemicals are employed for electricity generation, similar to other ...
Bahareh Kokabian, Veera Gnaneswar Gude
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