Advances in the development of electrode materials for improving the reactor kinetics in microbial fuel cells

Agrahari, Roma; Bayar, B.; Abubackar, Haris Nalakath; Giri, Balendu Shekher; Rene, Eldon R.; Rani, Radha

doi:10.1016/j.chemosphere.2021.133184

Cited by 40 publications

(8 citation statements)

References 83 publications

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“…In the study of electrochemical systems, a key component in the construction of the system to be studied is the electrode. In the context of PMFCs, electrodes should be conductive, biocompatible, chemically stable, and economical (Agrahari et al, 2022;Nidheesh et al, 2022). Carbon is an established material of choice due to its generally high conductivity, low resistance, and porous nature.…”

Section: Conductive Pla As Electrodementioning

confidence: 99%

Performance evaluation of the novel 3D-printed aquatic plant-microbial fuel cell assembly with Eichhornia crassipes

Malinis,

Velasco,

Pamintuan

2023

Int. J. Renew. Energy Dev.

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Plant-Microbial Fuel Cells (PMFCs) are a sustainable derivative of fuel cells that capitalizes on plant rhizodeposition to generate bioelectricity. In this study, the performance of the novel 3D-printed aquatic PMFC assembly with Eichhornia crassipes as the model plant was investigated. The design made use of 1.75 mm Protopasta Conductive Polylactic Acid (PLA) for the electrodes and 1.75 mm CCTREE Polyethylene Terephthalate Glycol (PETG) filaments for the separator. Three systems were prepared with three replicates each: PMFCs with the original design dimensions (System A), PMFCs with cathode-limited surface area variations (System B), and PMFCs with anode-limited surface area variations (System C). The maximum power density obtained by design was 82.54 µW/m2, while the average for each system is 26.99 µW/m2, 36.24 µW/m2, and 6.81 µW/m2, respectively. The effect of variations on electrode surface area ratio was also examined, and the results suggest that the design benefits from increasing the cathode surface area up to a cathode-anode surface area ratio of 2:1. This suggests that the cathode is the crucial component for this design due to it facilitating the rate-limiting step. Plant health was also found to be a contributing factor to PMFC performance, thereby suggesting that PMFCs are an interplay of several factors not limited to electrode surface area alone. The performance of the novel PMFC did not achieve those obtained from existing studies. Nevertheless, the result of this study indicates that 3D-printing technology is a possible retrofit for PMFC technology and can be utilized for scale-up and power amplification.

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Section: Conductive Pla As Electrodementioning

confidence: 99%

Performance evaluation of the novel 3D-printed aquatic plant-microbial fuel cell assembly with Eichhornia crassipes

Malinis,

Velasco,

Pamintuan

2023

Int. J. Renew. Energy Dev.

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“…[ 8 ] Electrode modification has been proven to be an effective route to enhance EET at biological/inorganic interfaces, and micro/nano‐level materials usually exhibit more efficient performance than other materials due to their matchable sizes that can interact more strongly with cells. [ 9 ] However, the performance of bioelectrodes still requires further improved, because this method is usually only effective in a limited range of the interface between the electrode and the several layers of bacteria in contact. [ 10 ] This limitation is evidently unfavorable, particularly considering that the biofilms of typical BESs (e.g., MFCs) could reach a thickness up to tens or hundreds of micrometers.…”

Section: Introductionmentioning

confidence: 99%

In Situ Biosynthesis of FeS Nanoparticles Boosts Current Generation in Bioelectrochemical Systems Through Efficient Electron Transfer

He,

Fu,

et al. 2024

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The utility of electrochemical active biofilm in bioelectrochemical systems has received considerable attention for harvesting energy and chemical products. However, the slow electron transfer between biofilms and electrodes hinders the enhancement of performance and still remains challenging. Here, using Fe3O4 /L‐Cys nanoparticles as precursors to induce biomineralization, a facile strategy for the construction of an effective electron transfer pathway through biofilm and biological/inorganic interface is proposed, and the underlying mechanisms are elucidated. Taking advantage of an on‐chip interdigitated microelectrode array (IDA), the conductive current of biofilm that is related to the electron transfer process within biofilm is characterized, and a 2.10‐fold increase in current output is detected. The modification of Fe3O4/L‐Cys on the electrode surface facilitates the electron transfer between the biofilm and the electrode, as the bio/inorganic interface electron transfer resistance is only 16% compared to the control. The in‐situ biosynthetic Fe‐containing nanoparticles (e.g., FeS) enhance the transmembrane EET and the EET within biofilm, and the peak conductivity increases 3.4‐fold compared to the control. The in‐situ biosynthesis method upregulates the genes involved in energy metabolism and electron transfer from the transcriptome analysis. This study enriches the insights of biosynthetic nanoparticles on electron transfer process, holding promise in bioenergy conversion.

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“…Electroactive polymers such as polyaniline (PANI), 1 polypyrrole (PPy), 2 polythiophene (PTh), 3 poly( o -phenylenediamine) (POPD), 4 poly(1-naphthylamine) (PNA), 5 and polycarbazole (PCz) 6 have been utilized in diverse applications such as biosensors, 7 supercapacitors, 8 battery electrodes, 9 photocatalysts, 10 microbial fuel cells, 11 etc. Among them, PPy and PTh display exceptional properties such as ease of preparation, good redox behavior, high electrical conductivity, and good thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and biophysical interaction studies of water-dispersible polypyrrole/polythiophene co-oligomers with bovine serum albumin and human serum albumin: an experimental and theoretical approach

et al. 2023

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Advances in the development of electrode materials for improving the reactor kinetics in microbial fuel cells

Cited by 40 publications

References 83 publications

Performance evaluation of the novel 3D-printed aquatic plant-microbial fuel cell assembly with Eichhornia crassipes

Performance evaluation of the novel 3D-printed aquatic plant-microbial fuel cell assembly with Eichhornia crassipes

In Situ Biosynthesis of FeS Nanoparticles Boosts Current Generation in Bioelectrochemical Systems Through Efficient Electron Transfer

Synthesis, characterization, and biophysical interaction studies of water-dispersible polypyrrole/polythiophene co-oligomers with bovine serum albumin and human serum albumin: an experimental and theoretical approach

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