Development of a tubular microbial fuel cell (MFC) employing a membrane electrode assembly cathode

Kim, Jung-Rae; Premier, Giuliano C.; Hawkes, Freda R.; Dinsdale, Richard M.; Guwy, Alan J.

doi:10.1016/j.jpowsour.2008.11.020

Cited by 159 publications

(68 citation statements)

References 29 publications

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“…A small inductance (L1) was observed at the beginning of the impedance, as seen in Figure 6, this being the vertical line at the beginning of the semicircle, which could be due to the extension of the wiring of the electrodes or the presence of low frequencies as mentioned by Min et al (2012) and Kim et al (2009). The inductances are small enough that they do not interfere with the current flow, as proposed by [39,65,66].…”

Section: Internal Resistancementioning

confidence: 79%

“…The inductances are small enough that they do not interfere with the current flow, as proposed by [39,65,66].…”

Section: Internal Resistancementioning

confidence: 99%

“…He et al (2009) propose that this element could be due to the variety of processes that occur in the biofilm [69]. [39,65,66]. The initial resistance (R1) in the equivalent circuit, in addition to being caused by the material of the electrode, was out of phase with the origin at high frequencies because of the reduction of phosphates to iron phosphide (FeP) due to the production of sulfides formed by sulfate-reducing bacteria in marine sediments, as seen in Figure 6.…”

Section: Internal Resistancementioning

confidence: 99%

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Effect of Operating Parameters on the Performance Evaluation of Benthic Microbial Fuel Cells Using Sediments from the Bay of Campeche, Mexico

et al. 2018

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Benthic microbial fuel cells (BMFC) are devices that remove organic matter (OM) and generate energy from sediments rich in organic nutrients. They are composed of electrodes with adequate different distances and floating air cathodes in an aqueous medium with saturated oxygen. In this study we proposed to design, build, analyze and evaluate a set of BMFCs with floating air cathodes to test the optimal distance between the electrodes, using sediment from the Bay of Campeche as a substrate. For the analysis of OM removal, COD tests, volatile solids (VS), E 4 /E 6 study and FTIR analysis were performed. Power generation was evaluated through polarization curves, cyclic voltammetry and electrochemical impedance spectroscopy (EIS). We achieved a current density and power density at 10 cm depth of 929.7 ± 9.5 mA/m 2 and 109.6 ± 7.5 mW/m 2 respectively, with 54% removal of OM from the sediment, obtaining formation of aliphatic structures. BMFCs are proposed as adequate systems for bioremediation and power generation. The system at 10 cm depth and 100 cm distance between sediment and the floating air cathode had a good performance and therefore the potential for possible scaling.

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Section: Internal Resistancementioning

confidence: 79%

“…The inductances are small enough that they do not interfere with the current flow, as proposed by [39,65,66].…”

Section: Internal Resistancementioning

confidence: 99%

Section: Internal Resistancementioning

confidence: 99%

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Effect of Operating Parameters on the Performance Evaluation of Benthic Microbial Fuel Cells Using Sediments from the Bay of Campeche, Mexico

et al. 2018

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“…S1 †). 23 The BC powder catalyst was prepared by grounding the HCl-washed BCT sample and sieving the obtained sample with a 2000 mesh sieve. The catalyst loading of the MFCs was 0.5 mg cm À2 for Pt and 80 mg cm…”

Section: Preparation Of the Air Cathodesmentioning

confidence: 99%

A monolithic air cathode derived from bamboo for microbial fuel cells

Yang

Zhang

et al. 2017

RSC Adv.

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To simplify the cathode fabrication, we herein report a bamboo charcoal tube-derived (BCT) air cathode for microbial fuel cells (MFCs). This monolithic cathode was prepared by carbonizing a bamboo tube in a N 2 atmosphere at 900 C. The scanning electron microscope indicates that the porous structure of the BCT cathode can provide possible channels for oxygen supply and proton transfer, and therefore can offer the formation of the triple phase interfaces required for oxygen reduction reaction (ORR) in the bulk of BCT. It is also shown that compared to the cathode with bamboo charcoal powder (BC) and Pt/C, the BCT cathode exhibited the lowest oxygen mass transfer coefficient of 4.5 Â 10 À5 cm s À1. Additionally, the rotating ring-disk electrode tests demonstrate that the BCT cathode exhibited a considerable activity toward ORR. Consequently, the MFC with BCT delivered a comparable maximum power density (40.4 AE 1.5 W m À3) to that with Pt/C (37.7 AE 2.5 W m À3) and the highest coulombic efficiency of 55.87 AE 1.0% as compared with the MFCs with BC (29.9 AE 0.4%) and Pt/C (17.2 AE 0.4%). These results indicate that BCT could serve as a low cost, simple fabrication and high-performance alternative cathode for MFCs.

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“…however, the use of electrode materials without this expensive catalyst often require cathode hydration in order to maintain a moist environment for the transport of ionic species and oxygen reduction [16]. This provides the added cost and complexity of incorporating the hydration process into operation.…”

Section: Carbon Veil Vs Conductive Latex Cathodesmentioning

confidence: 99%