Novel Analytical Microbial Fuel Cell Design for Rapid in Situ Optimisation of Dilution Rate and Substrate Supply Rate, by Flow, Volume Control and Anode Placement

You, Jiseon; Greenman, John; Ieropoulos, Ioannis

doi:10.3390/en11092377

Cited by 17 publications

(11 citation statements)

References 22 publications

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“…The removal rate of organic acids for MFCs did not change significantly with the variation of the dilution ratio and remained stable between 58 % and 62 %. In You's study, the COD removal rate increased significantly with the decrease of substrate concentration, which was different from us . This may be caused by different substrates.…”

Section: Results and Analysiscontrasting

confidence: 63%

Electricity Enhancement by MFCs from Food Waste Ethanol Fermentation Recycle Stillage Effect of Dilution Ratio and Addition of Tween 80

Gao

et al. 2020

ChemistrySelect

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The ethanol fermentation stillage of food waste can be used as the substrate of microbial fuel cells (MFCs), but its complexity affected the electricity production. In this study, the effect of the dilution ratio and the addition of Tween 80 on MFCs were carried out. The results showed that the maximum output power based on the cathode area and volume gradually enhanced with the increase of the dilution ratio, and the maximum output power of 612 mW m À 2 and 6.4 W m À 3 reached with the dilution of 200 times. The removal rate of organic acids by MFCs remained stable between 58 % and 62 %. The maximum output power of MFCs with three kinds of Tween 80 concentrations, 5 mg L À 1 , 20 mg L À 1 and 80 mg L À 1 , increased by 2.1 times, 3.1 times and 1.4 times respectively. The addition of Tween 80 can significantly reduce the biotoxicity. With 20 mg L À 1 Tween 80 added, the toxicity removal rate reached highest of 95.1 %. ChemistrySelectFull Papers

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Section: Results and Analysiscontrasting

confidence: 63%

Electricity Enhancement by MFCs from Food Waste Ethanol Fermentation Recycle Stillage Effect of Dilution Ratio and Addition of Tween 80

Gao

et al. 2020

ChemistrySelect

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“…Work by You et al. [ 117 ] showed the effects of increasing the flow rate of C/E limited feedstock on power output from a small scale (30 ml chamber volume) MFC with an open-to-air cathode. The biofilm was developed from a mixed highly diverse culture derived from sewage sludge.…”

Section: Empirical Demonstration Of Steady State Stabilitymentioning

confidence: 99%

Microbial fuel cells and their electrified biofilms

Greenman

Gajda

You

et al. 2021

Biofilm

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Bioelectrochemical systems (BES) represent a wide range of different biofilm-based bioreactors that includes microbial fuel cells (MFCs), microbial electrolysis cells (MECs) and microbial desalination cells (MDCs). The first described bioelectrical bioreactor is the Microbial Fuel Cell and with the exception of MDCs, it is the only type of BES that actually produces harvestable amounts of electricity, rather than requiring an electrical input to function. For these reasons, this review article, with previously unpublished supporting data, focusses primarily on MFCs. Of relevance is the architecture of these bioreactors, the type of membrane they employ (if any) for separating the chambers along with the size, as well as the geometry and material composition of the electrodes which support biofilms. Finally, the structure, properties and growth rate of the microbial biofilms colonising anodic electrodes, are of critical importance for rendering these devices, functional living ‘engines’ for a wide range of applications.

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“…In this study, upon changing the cathodic concentrations, by keeping other variables constant, a substantial increment in the MFC performance was observed. With respect to the fuel feed flowrate at the anode, a recent study was performed by You et al [29]. After a series of experiments, it was noted that a higher fuel feed flow rate does not result in an enhancement of the power density of an MFC.…”

Section: Optimal Conditionsmentioning

confidence: 99%

Statistical Modeling and Performance Optimization of a Two-Chamber Microbial Fuel Cell by Response Surface Methodology

et al. 2021

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Microbial fuel cell, as a promising technology for simultaneous power production and waste treatment, has received a great deal of attention in recent years; however, generation of a relatively low power density is the main limitation towards its commercial application. This study contributes toward the optimization, in terms of maximization, of the power density of a microbial fuel cell by employing response surface methodology, coupled with central composite design. For this optimization study, the interactive effect of three independent parameters, namely (i) acetate concentration in the influent of anodic chamber; (ii) fuel feed flow rate in anodic chamber; and (iii) oxygen concentration in the influent of cathodic chamber, have been analyzed for a two-chamber microbial fuel cell, and the optimum conditions have been identified. The optimum value of power density was observed at an acetate concentration, a fuel feed flow rate, and an oxygen concentration value of 2.60 mol m−3, 0.0 m3, and 1.00 mol m−3, respectively. The results show the achievement of a power density of 3.425 W m−2, which is significant considering the available literature. Additionally, a statistical model has also been developed that correlates the three independent factors to the power density. For this model, R2, adjusted R2, and predicted R2 were 0.839, 0.807, and 0.703, respectively. The fact that there is only a 3.8% error in the actual and adjusted R2 demonstrates that the proposed model is statistically significant.

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Novel Analytical Microbial Fuel Cell Design for Rapid in Situ Optimisation of Dilution Rate and Substrate Supply Rate, by Flow, Volume Control and Anode Placement

Cited by 17 publications

References 22 publications

Electricity Enhancement by MFCs from Food Waste Ethanol Fermentation Recycle Stillage Effect of Dilution Ratio and Addition of Tween 80

Electricity Enhancement by MFCs from Food Waste Ethanol Fermentation Recycle Stillage Effect of Dilution Ratio and Addition of Tween 80

Microbial fuel cells and their electrified biofilms

Statistical Modeling and Performance Optimization of a Two-Chamber Microbial Fuel Cell by Response Surface Methodology

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