Trivalent iron shaped the microbial community structure to enhance the electrochemical performance of microbial fuel cells inoculated with soil and sediment

Sharafat, Iqra; Ali, Jafar; Hussain, Arshad; Torres, César I.; Ali, Naeem

doi:10.1016/j.jece.2022.107790

Cited by 14 publications

(2 citation statements)

References 72 publications

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“…and Geobacter sp. on the anode [9]. Yamashita et al [10] tested a flame-oxidized (FO) stainless steel (SS) anode in a single-chamber MFC compared to SS and CC anodes without treatment.…”

Section: Introductionmentioning

confidence: 99%

Anode Modification with Fe2O3 Affects the Anode Microbiome and Improves Energy Generation in Microbial Fuel Cells Powered by Wastewater

Nosek

Mikołajczyk

Cydzik‐Kwiatkowska

2023

IJERPH

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This study investigated how anode electrode modification with iron affects the microbiome and electricity generation of microbial fuel cells (MFCs) fed with municipal wastewater. Doses of 0.0 (control), 0.05, 0.1, 0.2, and 0.4 g Fe2O3 per the total anode electrode area were tested. Fe2O3 doses from 0.05 to 0.2 g improved electricity generation; with a dose of 0.10 g Fe2O3, the cell power was highest (1.39 mW/m2), and the internal resistance was lowest (184.9 Ω). Although acetate was the main source of organics in the municipal wastewater, propionic and valeric acids predominated in the outflows from all MFCs. In addition, Fe-modification stimulated the growth of the extracellular polymer producers Zoogloea sp. and Acidovorax sp., which favored biofilm formation. Electrogenic Geobacter sp. had the highest percent abundance in the anode of the control MFC, which generated the least electricity. However, with 0.05 and 0.10 g Fe2O3 doses, Pseudomonas sp., Oscillochloris sp., and Rhizobium sp. predominated in the anode microbiomes, and with 0.2 and 0.4 g doses, the electrogens Dechloromonas sp. and Desulfobacter sp. predominated. This is the first study to holistically examine how different amounts of Fe on the anode affect electricity generation, the microbiome, and metabolic products in the outflow of MFCs fed with synthetic municipal wastewater.

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“…and Geobacter sp. on the anode [9]. Yamashita et al [10] tested a flame-oxidized (FO) stainless steel (SS) anode in a single-chamber MFC compared to SS and CC anodes without treatment.…”

Section: Introductionmentioning

confidence: 99%

Anode Modification with Fe2O3 Affects the Anode Microbiome and Improves Energy Generation in Microbial Fuel Cells Powered by Wastewater

Nosek

Mikołajczyk

Cydzik‐Kwiatkowska

2023

IJERPH

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“…An MFCs is a system in which chemical energy is transformed into electrical energy through redox reactions [11]. They are made up of an anode and a cathode, where the electrons are released through a microbial reaction and are transported to the anode by mediators or direct transmission, then, with an external resistance, the electrons are directed to the cathode where they are consumed [12]. The substrate provides energy to microbial fuel cells and provides nutrients to microorganisms, the most used are: glucose (C₆H₁₂O₆), ethanol (C2H5OH) and lactate (C3H6O3) [13].…”

Section: Introductionmentioning

confidence: 99%

Electricity generation and wastewater treatment using microbial fuel cells with graphite and aluminum electrodes

QuiÑones¹,

Coronado²,

Leon³

et al. 2022

Proceedings of the 2nd LACCEI International Multiconference on Entrepreneurship, Innovation and Regional Development (LEIRD 202

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A microbial fuel cell (MFC) is a system that can integrate electricity generation and, at the same time, contribute to decontaminating wastewater, becoming an eco-friendly technology with the environment. In this research, microbial fuel cells with graphite and aluminum electrodes were used at different sizes: 9, 25 and 64 cm 2 , and a wastewater sample obtained from a rural location in Peru was used as substrate. The MFCs parameters of voltage, current and conductivity were monitored for 12 days, for the generation of electricity; and the parameters of Chemical Oxygen Demand (COD), Thermotolerant Coliforms, Turbidity and pH, for wastewater treatment. The MFCs with electrodes of 64 cm 2 were the ones that had the highest efficiency in the production of electricity, because they generated higher voltage, current and conductivitythroughout the days evaluated, with peaks of 0.22 V, 0.08 mA and 1.05 mS/cm, respectively. Likewise, a reduction in the content of COD, Thermotolerant Coliforms and Turbidity of the substrate used (70, 73 and 36%) was achieved, while the pH remained slightly stable, with values from 7.39 to 6.49 during the days evaluated. The MFCs are a promising approach to a sustainable future in which energy can be generated from the use of household wastewater, while simultaneously treating these effluents.

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Performance assessment of commercial bacteria in microbial fuel cells designed using dry cell components

Maddalwar,

Nayak,

Singh

2024

Bioresource Technology Reports

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Trivalent iron shaped the microbial community structure to enhance the electrochemical performance of microbial fuel cells inoculated with soil and sediment

Cited by 14 publications

References 72 publications

Anode Modification with Fe2O3 Affects the Anode Microbiome and Improves Energy Generation in Microbial Fuel Cells Powered by Wastewater

Anode Modification with Fe2O3 Affects the Anode Microbiome and Improves Energy Generation in Microbial Fuel Cells Powered by Wastewater

Electricity generation and wastewater treatment using microbial fuel cells with graphite and aluminum electrodes

Performance assessment of commercial bacteria in microbial fuel cells designed using dry cell components

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