Surface modification of commercial carbon felt used as anode for Microbial Fuel Cells

Hidalgo, Diana; Tommasi, Tonia; Bocchini, Sergio; Chiolerio, Alessandro; Chiodoni, Angelica; Mazzarino, Italo; Ruggeri, Bernardo

doi:10.1016/j.energy.2016.01.039

Cited by 91 publications

(36 citation statements)

References 45 publications

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“…Figure shows the main parameters obtained from these curves. In part A, it can be seen how, despite the performance seeming to be stabilized, as the dynamic response of the daily voltage under close circuit conditions indicates, the capacity for the production of power could still be improved after 40 days of operation and how the best MFC (that operated at SRT of 2.5 days) reached 3 W m ‐2 , which is an outstanding value for the technology used, comparable with the output powers of other similar devices in the literature: 1 W m ‐2 , 2 W m ‐2 , 0.1 W m ‐2 , , 0.6 W m ‐2 , . 0.07 .…”

Section: Resultssupporting

confidence: 57%

Effect of sludge age on microbial consortia developed in MFCs

Mateo

Zamorano-López

Borrás

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND This work is focused on the assessment of the performance of mini‐scale air‐breathing microbial fuel cells (MFCs), by monitoring the evolution of the bio‐electrogenic activity for a period of 40 days and by comparing the microorganisms populations developed in each of the MFCs after this period. RESULTS Five MFCs were operated at sludge ages ranging from 1.4 to 10.0 days. Results showed the superb performance of the MFC operating under a sludge age of 2.5 days. Desulfuromonas, Syntrophothermus, Solitalea, Acholeplasma, Propionicimonas, Desulfobacula and Sphaerochaeta are proposed as potentially responsible for the bio‐electrogenic activity. CONCLUSIONS Microbial population analysis through Illumina amplicon sequencing demonstrated that despite all MFCs being seeded with the same mixed culture inoculum, the biological cultures developed in the suspension and the biofilm are completely different and depend strongly on sludge age. © 2017 Society of Chemical Industry

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Section: Resultssupporting

confidence: 57%

Effect of sludge age on microbial consortia developed in MFCs

Mateo

Zamorano-López

Borrás

et al. 2017

J of Chemical Tech & Biotech

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“…[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] Such materials are cheap, resistant to corrosion, environmentally friendly, and possess good mechanical strength and electrical conductivity. [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] Furthermore, 3D carbonaceous materials have a high surface area/volume ratio, which allows electrical interaction between the bacteria and electrode and increases electron transfer rate per unit of the geometric surface. 20 Examples include carbon brush, 21,22 carbon cloth, 23,24 carbon paper, 25,26 carbon felt, [27][28][29] and carbon veil (CV).…”

Section: Introductionmentioning

confidence: 99%

Anodic biofilms as the interphase for electroactive bacterial growth on carbon veil

et al. 2016

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The structure and activity of electrochemically active biofilms (EABs) are usually investigated on flat electrodes. However, real world applications such as wastewater treatment and bioelectrosynthesis require tridimensional electrodes to increase surface area and facilitate EAB attachment. The structure and activity of thick EABs grown on high surface area electrodes are difficult to characterize with electrochemical and microscopy methods. Here, the authors adopt a stacked electrode configuration to simulate the high surface and the tridimensional structure of an electrode for large-scale EAB applications. Each layer of the stacked electrode is independently characterized using confocal laser scanning microscopy (CLSM) and digital image processing. Shewanella oneidensis MR-1 biofilm on stacked carbon veil electrodes is grown under constant oxidative potentials (0, +200, and +400 mV versus Ag/AgCl) until a stable current output is obtained. The textural, aerial, and volumetric parameters extracted from CLSM images allow tracking of the evolution of morphological properties within the stacked electrodes. The electrode layers facing the bulk liquid show higher biovolumes compared with the inner layer of the stack. The electrochemical performance of S. oneidensis MR-1 is directly linked to the overall biofilm volume as well as connectivity between cell clusters.

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“…The properties of the bio-anode play a critical part in the performance of MFCs [23,40]. Carbon and carbon-based materials are commonly used as electrodes for MFC as they are cheap, biocompatible, have a good electrical conductivity, and are available in different morphologies, such as carbon paper (CC), carbon cloth, carbon felt, and carbon brush [41][42][43][44]. The different parameters affecting the MFC performance include everything from the membrane, electrode type and structure, biocatalyst, cell design, pH, and concentration of the anode [45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

A Carbon-Cloth Anode Electroplated with Iron Nanostructure for Microbial Fuel Cell Operated with Real Wastewater

et al. 2020

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Microbial fuel cell (MFC) is an emerging method for extracting energy from wastewater. The power generated from such systems is low due to the sluggish electron transfer from the inside of the biocatalyst to the anode surface. One strategy for enhancing the electron transfer rate is anode modification. In this study, iron nanostructure was synthesized on a carbon cloth (CC) via a simple electroplating technique, and later investigated as a bio-anode in an MFC operated with real wastewater. The performance of an MFC with a nano-layer of iron was compared to that using bare CC. The results demonstrated that the open-circuit voltage increased from 600 mV in the case of bare CC to 800 mV in the case of the iron modified CC, showing a 33% increase in OCV. This increase in OCV can be credited to the decrease in the anode potential from 0.16 V vs. Ag/AgCl in the case of bare CC, to −0.01 V vs. Ag/AgCl in the case of the modified CC. The power output in the case of the modified electrode was 80 mW/m2—two times that of the MFC using the bare CC. Furthermore, the steady-state current in the case of the iron modified carbon cloth was two times that of the bare CC electrode. The improved performance was correlated to the enhanced electron transfer between the microorganisms and the iron-plated surface, along with the increase of the anode surface- as confirmed from the electrochemical impedance spectroscopy and the surface morphology, respectively.

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Surface modification of commercial carbon felt used as anode for Microbial Fuel Cells

Cited by 91 publications

References 45 publications

Effect of sludge age on microbial consortia developed in MFCs

Effect of sludge age on microbial consortia developed in MFCs

Anodic biofilms as the interphase for electroactive bacterial growth on carbon veil

A Carbon-Cloth Anode Electroplated with Iron Nanostructure for Microbial Fuel Cell Operated with Real Wastewater

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