Standardized Characterization of a Flow Through Microbial Fuel Cell

Higgins, Scott R.; Lau, Carolin; Atanassov, Plamen; Cooney, Michael J.

doi:10.1002/elan.201100249

Cited by 9 publications

(10 citation statements)

References 49 publications

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“…ethanol, butanol, glycerol, mannitol, ethylene glycol). 13,15,16 Over the past 20 years, microbial electrochemical systems have been studied for nitrate remediation. 7,8 Biological denitrification has been proven effective; however, many of the reactors use heterotrophic bacteria which require complex organic substances as energy sources, increasing operating costs and scalability.…”

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confidence: 99%

A Self-Sufficient Nitrate Groundwater Remediation System:Geobacter SulfurreducensMicrobial Fuel Cell Fed by Hydrogen from a Water Electrolyzer

Knoche

Renner

Gellett

et al. 2016

J. Electrochem. Soc.

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Nitrate contamination of groundwater is a major problem, especially in farming areas where nitrogen-based fertilizers are used. Geobacter sulfurreducens electrodes were electrochemically evaluated for their ability to reduce nitrate with implications for groundwater remediation. G. sulfurreducens were optimized for nitrate reduction by modifying growth media during subculture. The Geobacter were then cast on Toray carbon paper electrodes and immobilized with pectin. Cyclic voltammetry demonstrated that the electrodes bioelectrocatalytically reduce nitrate with an onset potential of −0.25 V vs. SCE. Amperometry was used to evaluate nitrate concentrations between 0.5 and 270 mM. The limit of detection is 8 mM with a linear range of 20 mM to 160 mM. Evaluation by a Michaelis Menten kinetic model yields a K M of 110 ± 10 mM. The Geobacter sulfurreducens electrodes were incorporated into a nitrate reducing microbial fuel cell which was fed nitrate contaminated water by a peristaltic pump and hydrogen from a proton exchange membrane (PEM)-based water electrolysis cell and yielded a remediation rate of 6 mg/cm 2 /day.

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mentioning

confidence: 99%

A Self-Sufficient Nitrate Groundwater Remediation System:Geobacter SulfurreducensMicrobial Fuel Cell Fed by Hydrogen from a Water Electrolyzer

Knoche

Renner

Gellett

et al. 2016

J. Electrochem. Soc.

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“…2,22,24 Geobacter and Shewanella species are two DMRB that are widely studied in MFCs. 4,9,12,[24][25][26][27][28][29] Although they may have different electron transfer mechanisms, they have one major feature, which makes them similar -the presence of outer-surface c-type cytochromes that can transfer electrons directly to a solid electron acceptor (e.g. iron and manganese oxides, and MFC electrodes).…”

Section: Microbial Fuel Cellsmentioning

confidence: 99%

“…In order to simplify the presentation and concentrate on the MFC components, only results from Shewanella spp. were included; 8,14,26,29,40,55,56 however, a similar analysis could be applied for any DMRB or microbial community.…”

Section: Microbial Fuel Cellsmentioning

confidence: 99%

Innovative statistical interpretation of Shewanella oneidensis microbial fuel cells data

Babanova

Bretschger

Roy

et al. 2014

Phys. Chem. Chem. Phys.

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The last decade of research has made significant strides toward practical applications of Microbial Fuel Cells (MFCs); however, design improvements and operational optimization cannot be realized without equally considering engineering designs and biological interfacial reactions. In this study, the main factors contributing to MFCs' overall performance and their influence on MFC reproducibility are discussed. Two statistical approaches were used to create a map of MFC components and their expanded uncertainties, principal component analysis (PCA) and uncertainty of measurement results (UMR). PCA was used to identify the major factors influencing MFCs and to determine their ascendency over MFC operational characteristics statistically. UMR was applied to evaluate the factors' uncertainties and estimate their level of contribution to the final irreproducibility. In order to simplify the presentation and concentrate on the MFC components, only results from Shewanella spp. were included; however, a similar analysis could be applied for any DMRB or microbial community. The performed PCA/UMR analyses suggest that better reproducibility of MFC performance can be achieved through improved design parameters. This approach is exactly opposite to the MFC optimization and scale up approach, which should start with improving the bacteria-electrode interactions and applying these findings to well-designed systems.

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“…According to the seminal works of Yahiro et al [163] which employed a GOx bioanode and a Pt cathode to construct a BFC (open circuit voltage, OCV of 175-350 mV) and those of Young et al [164], the definition of an enzymatic biofuel cell is stated as a fuel cell utilizing an enzyme as the electrocatalyst at one of the two electrodes; in this case it is at the anode. It should be noted that there is another class of BFC, namely the microbial fuel cell (MFC) which uses bacteria or microbes as catalysts [165][166][167][168][169]. Historically, this is the first type of BFC to be developed where specific bacteria perform both fuel oxidation and oxygen reduction reactions (ORR).…”

Section: From Enzymatically To Abiotically Catalyzed Glucose Fuel Celmentioning

confidence: 99%

Nanostructured Inorganic Materials at Work in Electrochemical Sensing and Biofuel Cells

et al. 2017

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Abstract:The future of analytical devices, namely (bio)sensors, which are currently impacting our everyday life, relies on several metrics such as low cost, high sensitivity, good selectivity, rapid response, real-time monitoring, high-throughput, easy-to-make and easy-to-handle properties. Fortunately, they can be readily fulfilled by electrochemical methods. For decades, electrochemical sensors and biofuel cells operating in physiological conditions have concerned biomolecular science where enzymes act as biocatalysts. However, immobilizing them on a conducting substrate is tedious and the resulting bioelectrodes suffer from stability. In this contribution, we provide a comprehensive, authoritative, critical, and readable review of general interest that surveys interdisciplinary research involving materials science and (bio)electrocatalysis. Specifically, it recounts recent developments focused on the introduction of nanostructured metallic and carbon-based materials as robust "abiotic catalysts" or scaffolds in bioelectrochemistry to boost and increase the current and readout signals as well as the lifetime. Compared to biocatalysts, abiotic catalysts are in a better position to efficiently cope with fluctuations of temperature and pH since they possess high intrinsic thermal stability, exceptional chemical resistance and long-term stability, already highlighted in classical electrocatalysis. We also diagnosed their intrinsic bottlenecks and highlighted opportunities of unifying the materials science and bioelectrochemistry fields to design hybrid platforms with improved performance.

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Standardized Characterization of a Flow Through Microbial Fuel Cell

Cited by 9 publications

References 49 publications

A Self-Sufficient Nitrate Groundwater Remediation System:Geobacter SulfurreducensMicrobial Fuel Cell Fed by Hydrogen from a Water Electrolyzer

A Self-Sufficient Nitrate Groundwater Remediation System:Geobacter SulfurreducensMicrobial Fuel Cell Fed by Hydrogen from a Water Electrolyzer

Innovative statistical interpretation of Shewanella oneidensis microbial fuel cells data

Nanostructured Inorganic Materials at Work in Electrochemical Sensing and Biofuel Cells

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