Performance assessment of a four-air cathode single-chamber microbial fuel cell under conditions of synthetic and municipal wastewater treatments

Tremouli, Asimina; Martinos, Michalis; Bebelis, S.; Lyberatos, Gérasimos

doi:10.1007/s10800-016-0935-3

Cited by 31 publications

(14 citation statements)

References 30 publications

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“…The high concentrations of anions and cations in the MFCs substrate under high salt conditions can accelerate the ion migration rate, which can significantly reduce the internal resistance of MFCs which, in turn, is beneficial to MFCs electricity production. However, high salt environments also inhibit the growth of microbes . In this paper, we investigated the effects of different salt concentrations on the growth and electricity production of microbial flora in MFCs anodes.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, the internal resistance of MFCs can be significantly reduced, which is beneficial to the electricity production . However, the high salt environment will also adversely affect the metabolism and growth of electrogenic microorganisms on the anode of MFCs, thereby affecting the population and community structure of anode biofilm, and may inhibit the electricity production and pollutants removal capacity of MFCs . Therefore, the problem of inhibition of microbial growth and metabolism under high salt conditions needs to be solved to obtain a high electricity generation of MFCs.…”

Section: Introductionmentioning

confidence: 99%

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Osmotic Pressure Compensated Solute Ectoine Improves Salt Tolerance of Microbial Cells in Microbial Fuel Cells

et al. 2019

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In the technology of microbial fuel cells (MFCs) for simultaneous electricity production and wastewater purification, the electricity production of MFCs decreases when the salt concentration in the wastewater is high. Increasing the electricity production of MFCs under high salt conditions is a great challenge. This paper studies the reasons for the decline of electricity production of MFCs under high salt conditions and develops ways to increase the electricity generation. The results show that high salt inhibits the growth of electrogenic microorganisms on the anode of MFCs, thereby reducing the electricity production. Addition of ectoine, an osmotic pressure compensated solute, can increase the salt tolerance of electrogenic microorganisms, thereby increasing the electricity generation of MFCs. With the addition of 1 mmol L−1 ectoine to the substrate, the average voltage output of the MFCs based on mixed microbial flora anode was increased by 60.4% (±3.9%). Under this condition, microbial diversity analysis showed that the dominant growth and electricity production genus Acinetobacter accounted for 38.9% in the microbial community of anode biofilm.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Osmotic Pressure Compensated Solute Ectoine Improves Salt Tolerance of Microbial Cells in Microbial Fuel Cells

et al. 2019

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“…The MFC design is a crucial factor that affects the technology performance. Single chamber configurations produce higher power densities in comparison with the dual chamber MFCs [ 6 , 7 ].Thus, in order to minimise the high internal resistance which drastically contributes to the low power output values, many designs and electrode materials have been proposed [ [8] , [9] , [10] , [11] , [12] ]. Further to the reactors design, the configuration of the electrodes and the electrode materials influence to a great extent the performance of an MFC.…”

Section: Introductionmentioning

confidence: 99%

Effect of simple interventions on the performance of a miniature MFC fed with fresh urine

Tremouli

Greenman

Ieropoulos

2021

International Journal of Hydrogen Energy

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The aim of the present study is to enhance the performance of a microbial fuel cell (MFC) design by making simple interventions. Specifically, terracotta “t” and mullite “m” ceramics are tested as membranes while carbon veil and carbon cloth are used as electrodes. In the case of “m” cylinders different dimensions are examined (m: ID 30 mm x height 11.5 mm; sm: ID 18 mm x height 18 mm). The units operated continuously with urine as the feedstock. The best performing is the sm type (60–100 μW), followed by the t type (40–80 μW) and the m type (20–40 μW). Polarisation experiments indicated that activated carbon on the anode enhances the power output (t: 423 μW, sm: 288 μW). Similarly, the increase of the surface area and the addition of stainless steel mesh on the cathode improves the power performance for the “sm” and the “t” units. Furthermore, it is shown that the design with the smaller internal diameter, performs better and is more stable through time.

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“…The stack has been constructed aiming at keeping the cost low. Thus GORE-TEX cloth was used as separator and cathode catalyst support, while MnO2 was used as catalyst [14,15]. The units were operated in continuous mode under two different connection modes (series and parallel) using fermentable household food waste (FORBI) extract as the feed [16].…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of a four-air cathode membraneless microbial fuel cell stack for wastewater treatment and energy extraction

et al. 2019

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A stack of two identical single chamber microbial fuel cells (MFCs) was assessed during using fermentable house hold extract as substrate. The design of the MFC units was based on the single chamber membrane-less technology using four cathode electrodes. The total power output was 492 mW either in series or parallel connection considering a total anolyte volume of 240 cm3. During continuous operation, the COD removal was 80% for each cell and for both operation modes (series and parallel). The electrochemical profiles provided significant information on the behaviour of the stack. During continuous operation, parallel connection is preferred over series connection, as it results to the same power output values, and COD removal but it provides lower internal resistances leading to more stable electrochemical performance behaviour.

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Performance assessment of a four-air cathode single-chamber microbial fuel cell under conditions of synthetic and municipal wastewater treatments

Cited by 31 publications

References 30 publications

Osmotic Pressure Compensated Solute Ectoine Improves Salt Tolerance of Microbial Cells in Microbial Fuel Cells

Osmotic Pressure Compensated Solute Ectoine Improves Salt Tolerance of Microbial Cells in Microbial Fuel Cells

Effect of simple interventions on the performance of a miniature MFC fed with fresh urine

Performance assessment of a four-air cathode membraneless microbial fuel cell stack for wastewater treatment and energy extraction

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