Long term testing of Microbial Fuel Cells: Comparison of different anode materials

Hidalgo, Diana; Tommasi, Tonia; Velayutham, Karthikeyan; Ruggeri, Bernardo

doi:10.1016/j.biortech.2016.07.084

Cited by 18 publications

(8 citation statements)

References 32 publications

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“…As a consequence, the maximum current density attainable increases over time reaching a value as high as 35 A m ‐2 , which is a very remarkable value for this type of MFCs taking into account the absence of catalyst on the anode, which accelerates the electron transfer. This is clearly seen when it is compared with the 0.8 A m ‐2 obtained in a MFC with a carbon felt anode of 25 cm 2 , a carbonaceous cathode with 0.5 mg Pt cm ‐2 and enriched with mixed culture; the 20 A m ‐2 reached in a double chamber MFC using anode and cathode of carbon felt under the same operational conditions as our study, and the 4.65 A m ‐2 and 0.75 A m ‐2 attained in another double chamber devices of 0.0113 cm 2 of carbon felt anode , . Other studies in literature with a different material in the anode reflected lower achievable current densities.…”

Section: Resultssupporting

confidence: 82%

“…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%

“…This is clearly seen when it is compared with the 0.8 A m -2 obtained in a MFC with a carbon felt anode of 25 cm 2 , a carbonaceous cathode with 0.5 mg Pt cm -2 and enriched with mixed culture; 10 the 20 A m -2 reached in a double chamber MFC using anode and cathode of carbon felt under the same operational conditions as our study, 66 and the 4.65 A m -2 and 0.75 A m -2 attained in another double chamber devices of 0.0113 cm 2 of carbon felt anode. 67,68 Other studies in literature with a different material in the anode reflected lower achievable current densities. Thus, an air-breathing MFC with 0.16 cm 2 of carbon cloth anode reached 0.0073 A m -2 14 another attained 9 A m -2 with a characteristically and operationally similar MFC to the previous one but increasing the surface area to 7 This value decreases to 2.2 A m -2 when carbon paper is used as electrodes.…”

Section: Resultsmentioning

confidence: 98%

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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: 82%

Section: Resultssupporting

confidence: 57%

Section: Resultsmentioning

confidence: 98%

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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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“…The best performing cell during MFC operation, the one inoculated with aerobic sludge under starving condition (MFC_100A.S), recorded an OCV of just 509 mV and the worse operating cells recorded always higher values: 809 mV for MFC_10A.S, 859 mV for MFC_50A.S and 859 mV for MFC_100N.A.S. Fuel mass transfer problems in the deeper layers of microorganisms might be the responsible for the decrease in the OCV of MFC_100A.S while the other MFCs show the theoretical value of OCV when operating with carbon felt as anode[30,31] as no electrogenic microorganisms grew up.…”

mentioning

confidence: 98%

Influence of the methodology of inoculation in the performance of air-breathing microbial fuel cells

Vicari

Mateo

Fernández-Morales

et al. 2017

Journal of Electroanalytical Chemistry

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In this work, four air-breathing microbial fuel cells (AB-MFC) were operated for 1 month in order to determine if the methodology of inoculation affects the steady-state performance of this type of MFCs. For this purpose, anaerobic and aerobic sludge were fed to two identical AB-MFCs without any external carbon source into a tight sealed environment during the first three days of start-up. For comparison purposes, other two AB-MFCs were operated mixing the initial sludge and an amount of sodium acetate as substrate. Results point out that the inoculation procedure does not affect the steady-state treatment capacity of the cells but it affects very seriously the production of electricity. Only the system fed with concentrated aerobic sludge was able to develop an efficient culture of bioelectrogenic microorganisms, while the other three systems failed in this purpose. This result was confirmed in a second independent series of experiments and by a last operation test, which consists of a re-inoculation of a low active MFC with microorganisms obtained from the best-performing cell in order to evaluate how much the MFC performance can be enhanced.

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“…Beside wastewater MFC can usage clean mixtures such as acetate or butyrate (Hidalgo et al 2016), alcohol, fatty acid, monosaccharide sugar (Asensio et al 2016), sucrose and glucose as electrolyte. To improve the output of MFC, recently researchers did several studies to the practice of MFC through membrane (Ghasemi et al 2015), short of membrane (Logan et al 2007), using moderator, short of moderator (Sevda and Sreekrishnan 2012) also using biocathodes (Gonzalez del Campo et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Study of The Effect of pH on The Performance of Microbial Fuel Cell for Generation of Bioelectricity

Halim¹,

Rahman²,

Ibrahim³

et al. 2021

Preprint

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Background: Day by day microbial fuel cell (MFC) technology is becoming a thought-provoking topic to the researcher because for its simultaneous utilization e.g. electricity production and wastewater treatment. Since wastewater is an important source of electrolyte for MFC, the key tenacity of this study was to investigate the outcome of pH happening various (Municipal, Bhairab river and Hospital) wastewaters used as electrolyte in dual chamber MFC.Findings: The lab-scale experiment was conducted in batch mode, where zinc plate (0.0027m2) as anode and copper plate (0.0027m2) as cathode. In this study a single electrolyte (any one of earlier mentioned three electrolytes) was used in five dual-chambers MFC where the pH of the electrolyte was 6, 7, 8, 9 and 10. The MFC was worked on a temperature ranged from 27°C to 34°C. Maximum outputs were found in terms of current density (1288.9mAm-2), voltage (1132 mV) and power density (1459.02wmw-2) were obtained at pH 8 by using Bhairab river water as an electrolyte in MFC chamber. A substantial amount of COD removal (94%) was also achieved in the same MFC chamber at the same pH (i.e. pH 8). However, the optimum operating pH for MFC containing municipal wastewater and hospital wastewater was found to be 8 and 9, respectively.Conclusion: The results suggest that various wastewaters may act as feasible feedstocks for bioelectricity generation in MFC. The results also show that COD can be removed from wastewater that suggest a treatment possibility of wastewater.

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Long term testing of Microbial Fuel Cells: Comparison of different anode materials

Cited by 18 publications

References 32 publications

Effect of sludge age on microbial consortia developed in MFCs

Effect of sludge age on microbial consortia developed in MFCs

Influence of the methodology of inoculation in the performance of air-breathing microbial fuel cells

Study of The Effect of pH on The Performance of Microbial Fuel Cell for Generation of Bioelectricity

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