A single sediment-microbial fuel cell powering a wireless telecommunication system

Thomas, Yohann R.J.; Picot, Matthieu; Carer, Arnaud; Berder, Olivier; Sentieys, Olivier; Barrière, Frédéric

doi:10.1016/j.jpowsour.2013.05.016

Cited by 111 publications

(56 citation statements)

References 28 publications

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“…Besides, MFCs can be fuelled by anoxic sediments or by the rhizodeposits of living plants which e.g. can power sensors at remote locations [2][3][4]. A MFC usually consists of two compartments separated by a membrane [5].…”

Section: Introductionmentioning

confidence: 99%

Monophyletic group of unclassified γ- Proteobacteria dominates in mixed culture biofilm of high-performing oxygen reducing biocathode

Rothballer

Picot

Sieper

et al. 2015

Bioelectrochemistry

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Several mixed microbial communities have been reported to show robust bioelectrocatalysis of oxygen reduction over time at applicable operation conditions. However, clarification of electron transfer mechanism(s) and identification of essential micro-organisms have not been realised. Therefore, the objective of this study was to shape oxygen reducing biocathodes with different microbial communities by means of surface modification using the electrochemical reduction of two different diazonium salts in order to discuss the relation of microbial composition and performance. The resulting oxygen reducing mixed culture biocathodes had complex bacterial biofilms variable in size and shape as observed by confocal and electron microscopy. Sequence analysis of ribosomal 16S rDNA revealed a putative correlation between the abundance of certain microbiota and biocathode performance. The best performing biocathode developed on the unmodified graphite electrode and reached a high current density for oxygen reducing biocathodes at neutral pH (0.9 A/m 2 ). This correlated with the highest domination (60.7 %) of a monophyletic group of unclassified γ-Proteobacteria. These results corroborate earlier reports by other groups, however, higher current densities and higher presence of these unclassified bacteria were observed in this work. Therefore, members of this group are likely key-players for highly performing oxygen reducing biocathodes.

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Section: Introductionmentioning

confidence: 99%

Monophyletic group of unclassified γ- Proteobacteria dominates in mixed culture biofilm of high-performing oxygen reducing biocathode

Rothballer

Picot

Sieper

et al. 2015

Bioelectrochemistry

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“…The depths in the sediment at which the anode electrode was evaluated were 5 and 10 cm [12,15,21,27,38]. The distances at which the floating air cathode electrode was placed on the surface of the sediment were 5, 10, 50 and 100 cm as shown in Figure 2 [10,12,21,27,38,39].…”

Section: Depth In Sediment and Distance Between Electrodesmentioning

confidence: 99%

“…The distances at which the floating air cathode electrode was placed on the surface of the sediment were 5, 10, 50 and 100 cm as shown in Figure 2 [10,12,21,27,38,39]. …”

Section: Depth In Sediment and Distance Between Electrodesmentioning

confidence: 99%

“…Likewise, it has been observed that in the cathode, the concentration of oxygen decreases with respect to the depth at which it is located [27]. Some authors such as Reimers et al (2001) and Tender et al (2008) observed that the oxygen in the aqueous cathode is limited by the submerged electrode, generating a maximum power density of 10 and 16 mW/m 2 respectively [12,21].…”

Section: Introductionmentioning

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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“…This electrode is connected to the cathode which is placed in aerobic water. Thomas et al (2013) constructed a sediment-type MFC which was linked to a wireless telecommunication device and was able to power the device for considerable time without any external control. Sedimenttype MFC can further be coupled with various modifications thereby differentiating them depending upon the type of microbial catalyst involved as well as the process of electron generation and transfer (Rosenbaum et al 2010).…”

Section: Sediment-type Mfcsmentioning

confidence: 99%

Microbial fuel cells in bioelectricity production

Tharali

Sain

Osborne

2016

Frontiers in Life Science

111

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Bioelectricity production involves generation of electricity by anaerobic digestion of organic substrates by microbes. A microbial fuel cell (MFC) is a device that converts chemical energy released as a result of oxidation of complex organic carbon sources which are utilized as substrates by microorganisms to produce electrical energy thereby proving to be an efficient means of sustainable energy production. The electrons released due to the microbial metabolism are captured to maintain a constant power density, without an effective carbon emission in the ecosystem. The various parameters involved in MFC technology toward power generation include maximum power density, coulombic efficiencies and sometimes chemical oxygen demand removal rate which evaluates the effectiveness of the device. Application of microbes toward bioremediation at the same time resulting in generation of electricity makes MFC technology a highly advantageous proposition which can be applied in various sectors of industrial, municipal and agricultural Waste Management. Although the efficiency of MFCs in power generation initially was low, recent modifications in the design, components and working have enhanced the power output to a significant level thereby enabling application of MFCs in various fields including wastewater treatment, biosensors and bioremediation. The following review provides an outline about the components involved, working, modifications and applications of MFC technology for various research and industrial objectives. ARTICLE HISTORY

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A single sediment-microbial fuel cell powering a wireless telecommunication system

Cited by 111 publications

References 28 publications

Monophyletic group of unclassified γ- Proteobacteria dominates in mixed culture biofilm of high-performing oxygen reducing biocathode

Monophyletic group of unclassified γ- Proteobacteria dominates in mixed culture biofilm of high-performing oxygen reducing biocathode

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

Microbial fuel cells in bioelectricity production

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