Characterization of electricity production and microbial community of food waste-fed microbial fuel cells

Asefi, Bahareh; Li, Shiue-Lin; Moreno, Henry A.; Sánchez-Torres, Viviana; Hu, Anyi; Li, Jiangwei; Yu, Chang-Ping

doi:10.1016/j.psep.2019.03.016

Cited by 64 publications

(22 citation statements)

References 47 publications

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“…Synergistetes, Bacteroidetes, Firmicutes and Proteobacteria are the most common phyla in anode microorganisms in a two‐chamber MFC and similar results were found in previous studies 5,16 . However, the abundance of these phyla in each study varied due to different parameters such as the feeding substrate, operational conditions, pH and temperature 17,18 .…”

Section: Resultssupporting

confidence: 80%

Silver removal and microbial community structure in microbial fuel cells

Almatouq

Webster

Babatunde

2022

J of Chemical Tech & Biotech

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Background: Silver (Ag) removal, electric current generation and the microbial community responsible were investigated in two replicate dual-chamber microbial fuel cells (MFCs). The MFCs were inoculated with activated sludge and operated for electricity generation over 90 days.Results: Silver was efficiently removed from synthetic wastewater at the cathode chamber of the MFC and the precipitated particles on the cathode electrode were verified as Ag using X-ray diffraction and scanning electron microscopy analysis. The MFCs achieved a maximum power density of 1850 ± 25 mW m −2 and a maximum Ag removal of 99.8%. Furthermore, Illumina highthroughput sequencing of bacterial 16S rRNA genes showed that both MFCs shared the same dominant bacterial phyla, namely Synergistetes, Bacteroidetes, Proteobacteria and Firmicutes, with bacteria belonging to Butyricicoccus, Petrimonas, Desulfomicrobium and Desulfovibrio and large numbers of unassigned genera.Conclusions: The dual-chamber MFCs provided an efficient method for concurrent Ag removal and energy generation, and effectively removed and recovered Ag from various wastewater streams even at low Ag concentrations. However, continued Ag precipitation on the electrode surface during long-term operation could lead to a deterioration in the performance of the MFC and an increase in internal resistance.

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Section: Resultssupporting

confidence: 80%

Silver removal and microbial community structure in microbial fuel cells

Almatouq

Webster

Babatunde

2022

J of Chemical Tech & Biotech

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“…Increases and decreases in voltage values are due to the increase and depletion of nutrients in anodic behaviour [20]. The reduction in voltage values of MFCs is also because, as time passed, the organic matter content increased, depositing on the bottom of the chambers and, thus, the size of organic particles increased, which restricted the movement of protons in the substrate of the anode chamber [21]. When is because, when the organic load exceeds a specific concentration, the voltage decreases due to the increase in internal resistance [22].…”

Section: Resultsmentioning

confidence: 99%

Potential Use of Papaya Waste as a Fuel for Bioelectricity Generation

et al. 2021

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Papaya (Carica papaya) waste cause significant commercial and environmental damage, mainly due to the economic losses and foul odours they emit when decomposing. Therefore, this work provides an innovative way to generate electricity for the benefit of society and companies dedicated to the import and export of this fruit. Microbial fuel cells are a technology that allows electricity generation. These cells were produced with low-cost materials using zinc and copper electrodes; while a 150 mL polymethylmethacrylate tube was used as a substrate collection chamber (papaya waste). Maximum values of 0.736 ± 0.204 V and 5.57 ± 0.45 mA were generated, while pH values increased from 3.848 to 8.227 ± 0.35 and Brix decreased slowly from the first day. The maximum power density value was 878.38 mW/cm2 at a current density of 7.245 A/cm2 at a maximum voltage of 1072.77 mV. The bacteria were identified with an identity percentage of 99.32% for Achromobacter xylosoxidans species, 99.93% for Acinetobacter bereziniae, and 100.00% for Stenotrophomonas maltophilia. This research gives a new way for the use of papaya waste for bioelectricity generation.

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“…The excellent production of electricity obtained was attributed to colonization of the species of electroactive bacteria on the anode electrode [16]. In the same way, Asefi et al (2019) used food waste as substrate and carbon felt as electrodes, and managed to generate voltage peaks of approximately 775 ± 2 mV and 422 mW/m 2 , with the decline in values being attributed to the lack of nutrients in the last days of monitoring [17]. Although vegetable residues are difficult to use for the generation of electrical currents, Fogg et al (2015) were one of the first to report the use of plants in MFCs for electricity generation, pointing out their great potential for use as a substrate in a cell due to their possessing many active redox mediators [18].…”

Section: Introductionmentioning

confidence: 88%

Use of Onion Waste as Fuel for the Generation of Bioelectricity

et al. 2022

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The enormous environmental problems that arise from organic waste have increased due to the significant population increase worldwide. Microbial fuel cells provide a novel solution for the use of waste as fuel for electricity generation. In this investigation, onion waste was used, and managed to generate maximum peaks of 4.459 ± 0.0608 mA and 0.991 ± 0.02 V of current and voltage, respectively. The conductivity values increased rapidly to 179,987 ± 2859 mS/cm, while the optimal pH in which the most significant current was generated was 6968 ± 0.286, and the ° Brix values decreased rapidly due to the degradation of organic matter. The microbial fuel cells showed a low internal resistance (154,389 ± 5228 Ω), with a power density of 595.69 ± 15.05 mW/cm2 at a current density of 6.02 A/cm2; these values are higher than those reported by other authors in the literature. The diffractogram spectra of the onion debris from FTIR show a decrease in the most intense peaks, compared to the initial ones with the final ones. It was possible to identify the species Pseudomona eruginosa, Acinetobacter bereziniae, Stenotrophomonas maltophilia, and Yarrowia lipolytica adhered to the anode electrode at the end of the monitoring using the molecular technique.

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Characterization of electricity production and microbial community of food waste-fed microbial fuel cells

Cited by 64 publications

References 47 publications

Silver removal and microbial community structure in microbial fuel cells

Silver removal and microbial community structure in microbial fuel cells

Potential Use of Papaya Waste as a Fuel for Bioelectricity Generation

Use of Onion Waste as Fuel for the Generation of Bioelectricity

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