Comparison of different electrode materials and modification for power enhancement in benthic microbial fuel cells (BMFCs)

Prakash, Om; Mungray, Alka A.; Kailasa, Suresh Kumar; Chongdar, Shobhana; Mungray, Arvind Kumar

doi:10.1016/j.psep.2018.04.009

Cited by 29 publications

(16 citation statements)

References 35 publications

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“…The R ct is related to the activation energy of anode, and low R ct contributes to enhancing the power generation. Our internal resistance results are comparable with previous studies such as the ones conducted by Prakash et al29 with carbon cloth anode (R ct = 74.7 Ω) and by Li et al27 with graphite plate anode (72 ± 12) using a mixture of biochar and sediment as an anode medium 30.…”

supporting

confidence: 91%

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Taşkan

Hasar

2020

Env Prog and Sustain Energy

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The aim of this study is to increase the electricity generation capacity of sediment microbial fuel cell (SMFC) using sewage sludge as a substrate source in anode media via an attractive electrode material. For this purpose, several electrochemical and molecular techniques have been employed to evaluate the performance of SMFC. The max power density and charge transfer resistance of SMFC running on sewage sludge were 187 mW/m2 and 84.7 Ω, respectively. The polymerase chain reaction‐denaturing gradient gel electrophoresis (PCR‐DGGE) analysis indicated that bacteria in anode biofilm belonged to the Clostridia, d‐proteobacteria, g‐proteobacteria, and b‐proteobacteria. Scanning electron microscopy and fluorescence in situ hybridization observations demonstrated that a viable biofilm was formed on the anode surface and the abundance of bacteria was significantly higher than archaea. Consequently, this study showed that sewage sludge could be used as a substrate in the anode media of SMFC for producing high power density.

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supporting

confidence: 91%

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Taşkan

Hasar

2020

Env Prog and Sustain Energy

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“…Prakash et al. modified the anode of BMFC with polyaniline incorporated carbon cloth but they found the maximum power density reached about 11 mW m −2 . Considering current density, it was clear that the Fe‐BMFC (1.4 A m −2 ) at the point of maximum power density was 3.5 times higher than that of the B‐BMFC (0.4 A m −2 ).…”

Section: Resultsmentioning

confidence: 99%

Improving Electrochemical Performance of Carbon Felt Anode by Modifying With Akaganeite in Marine Benthic Microbial Fuel Cells

Zhao

Ying

et al. 2019

Fuel Cells

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Enhancing the electrochemical performance of anode is a critical step for improving the power output of marine benthic microbial fuel cells (BMFCs). An active anode involving the akaganeite (β‐FeOOH)‐coated carbon felt was proposed in present study. Results showed that electrochemical performance of modified anode was significantly improved. The peak current density of oxidation reaction increased from 0.664 to 6.107 A m−2. The exchange current density was improved from 11.75 × 10−3 to 151.36 × 10−3 mA cm−2. Electron transfer resistance decreased from 13.4 to 1.407 Ω, while the surface capacitance dramatically increased. The maximum power density of the BMFCs equipped with modified anode approached to 504.2 mW m−2, 2.3 times higher than that with unmodified anode. Moreover, relative abundance of dissimilatory iron reducing bacteria (DIRB) on the modified anode increased. Finally, a molecule synergetic mechanism containing electrostatic interaction and bacteria recognition between DIRB and β‐FeOOH was proposed to interpret the improvement of modified anode.

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“…The nomenclature used for four sets developed for the configuration analysis was configuration/position/Set number/day as Horizontal/Left/Set/day (H/L/1/05). The seawater was aerated by air pump in the storage tank to maintain the dissolved oxygen above 3 mg L −1 approximately, which is similar to the natural condition in the ocean . All the reactors were operated in batch mode and seawater was re‐circulated.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of the Effect of Position and Configuration of Electrodes in Benthic Microbial Fuel Cell

et al. 2018

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Benthic microbial fuel cell (BMFC) is a futuristic technology for powering low power devices. A major problem in the scale‐up of BMFC is decreasing in the power generation with an increase in the size of the electrodes. However, the multi‐electrodes have a potential to increase the power generation. Therefore, multi‐electrodes (three electrodes) in Horizontal (H) and Vertical (V) configurations are examined in this work. For effective understanding, individual and combined electrodes in both the configurations are analyzed and compared with the Single (S) electrode. The analytical techniques, such as power and electrochemical impedance spectroscopy (EIS) are used in situ to understand the performance of BMFC. The start‐up provides information that the position of the electrode is the key for the enhancement of power generation. V, H, and S generated a maximum power density of 56.6, 49.4 and 22.5 mW m−2 having internal resistances of 389, 421 and 668 Ω, respectively. EIS data shows that the energy generation is dependent on the capacitance and resistance. The vertical arrangement provided the best configuration.

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Comparison of different electrode materials and modification for power enhancement in benthic microbial fuel cells (BMFCs)

Cited by 29 publications

References 35 publications

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Improving Electrochemical Performance of Carbon Felt Anode by Modifying With Akaganeite in Marine Benthic Microbial Fuel Cells

Evaluation of the Effect of Position and Configuration of Electrodes in Benthic Microbial Fuel Cell

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Comparison of different electrode materials and modification for power enhancement in benthic microbial fuel cells (BMFCs)

Cited by 29 publications

References 35 publications

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO2 electrode

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO2 electrode

Improving Electrochemical Performance of Carbon Felt Anode by Modifying With Akaganeite in Marine Benthic Microbial Fuel Cells

Evaluation of the Effect of Position and Configuration of Electrodes in Benthic Microbial Fuel Cell

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Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode

Electricity generation potential of sewage sludge in sediment microbial fuel cell using Ti–TiO₂ electrode