Evaluation of catalytic properties of tungsten carbide for the anode of microbial fuel cells

Rosenbaum, Miriam A.; Zhao, Feng; Quaas, M.; Wulff, H.; Schröder, Uwe; Scholz, Fritz

doi:10.1016/j.apcatb.2007.02.013

Cited by 126 publications

(51 citation statements)

References 30 publications

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“…MFCs offer a unique benefit in that electricity can be produced simultaneously with the removal of mixed organic contaminants in water, such as those found in municipal and food industry wastewaters. This application of MFCs is demonstrated by the many studies involving MFC power generation using various wastewaters [17,19,20,21].…”

Section: Introductionmentioning

confidence: 98%

Assessment of the Effects of Flow Rate and Ionic Strength on the Performance of an Air-Cathode Microbial Fuel Cell Using Electrochemical Impedance Spectroscopy

et al. 2010

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Impedance changes of the anode, cathode and solution were examined for an air-cathode microbial fuel cell (MFC) under varying conditions. An MFC inoculated with a pre-enriched microbial culture resulted in a startup time of less than ten days. Over this period, the anode impedance decreased below the cathode impedance, suggesting a cathode-limited power output. Increasing the anode flow rate did not impact the anode impedance significantly, but it decreased the cathode impedance by 65%. Increasing the anode-medium ionic strength also decreased the cathode impedance. These impedance results provide insight into electron and proton transport mechanisms and can be used to improve MFC performance.

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Section: Introductionmentioning

confidence: 98%

Assessment of the Effects of Flow Rate and Ionic Strength on the Performance of an Air-Cathode Microbial Fuel Cell Using Electrochemical Impedance Spectroscopy

et al. 2010

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“…These studies focused on how the electrode properties influenced the electrochemical reaction or increased the available/reactive surface area thus providing a foundation for later investigation into how electrodes effected biofilm formation and growth [8,9]. Observations from these studies led to the modification of anodes in order to further increase reactive surface area [7,10,11] and or decrease overpotentials, a conventional approach borrowed from catalytic fuel cell research [12][13][14]. For example, Logan et al [11] showed that increasing the overall surface area by employing a graphite electrode brush increased current density by ~2.5 times compared to a carbon cloth anode.…”

Section: Introductionmentioning

confidence: 99%

Changes in Carbon Electrode Morphology Affect Microbial Fuel Cell Performance with Shewanella oneidensis MR-1

et al. 2015

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Abstract:The formation of biofilm-electrodes is crucial for microbial fuel cell current production because optimal performance is often associated with thick biofilms. However, the influence of the electrode structure and morphology on biofilm formation is only beginning to be investigated. This study provides insight on how changing the electrode morphology affects current production of a pure culture of anode-respiring bacteria. Specifically, an analysis of the effects of carbon fiber electrodes with drastically different morphologies on biofilm formation and anode respiration by a pure culture (Shewanella oneidensis MR-1) were examined. Results showed that carbon nanofiber mats had ~10 fold higher current than plain carbon microfiber paper and that the increase was not due to an increase in electrode surface area, conductivity, or the size of the constituent material. Cyclic voltammograms reveal that electron transfer from the carbon nanofiber mats was biofilm-based suggesting that decreasing the diameter of the constituent carbon material from a few microns to a few OPEN ACCESSEnergies 2015, 8 1818 hundred nanometers is beneficial for electricity production solely because the electrode surface creates a more relevant mesh for biofilm formation by Shewanella oneidensis MR-1.

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“…2). This principle is not limited to molecular hydrogen; other reduced primary metabolites, such as formate, lactate or sulfide can mediate electrons in the presence of suitable electrocatalysts [1,26]. The ability to produce molecular hydrogen is widespread among many kinds of microorganisms, however, this chapter is focused on the application of photosynthetic, hydrogen-producing microorganisms in microbial fuel cells.…”

Section: Hydrogen As Mediator For Photomicrobial and Microbial Fuel Cmentioning

confidence: 99%

Photomicrobial Solar and Fuel Cells

Rosenbaum

Schröder

2010

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Microbial solar cells and photomicrobial fuel cells exploit the energy of light and the activity of phototrophic microorganisms to produce electricity. Whereas microbial solar cells use light as the sole energy source, photomicrobial fuel cells degrade organic matter in the presence of light. This review gives an overview about the recent developments in the field of microbial based photobiological fuel cells and microbial solar cells. It provides an insight into possible electron transfer mechanisms and elementary photobiological reaction pathways. A short outline of upcoming engineering issues is provided.

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Evaluation of catalytic properties of tungsten carbide for the anode of microbial fuel cells

Cited by 126 publications

References 30 publications

Assessment of the Effects of Flow Rate and Ionic Strength on the Performance of an Air-Cathode Microbial Fuel Cell Using Electrochemical Impedance Spectroscopy

Assessment of the Effects of Flow Rate and Ionic Strength on the Performance of an Air-Cathode Microbial Fuel Cell Using Electrochemical Impedance Spectroscopy

Changes in Carbon Electrode Morphology Affect Microbial Fuel Cell Performance with Shewanella oneidensis MR-1

Photomicrobial Solar and Fuel Cells

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