Potassium permanganate as an electron receiver in a microbial fuel cell

Eliato, Tahmineh Rahmani; Pazuki, Gholamreza; Majidian, Nasrollah

doi:10.1080/15567036.2013.818079

Cited by 18 publications

(8 citation statements)

References 18 publications

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“…In a more recent study, the best permanganate concentration was studied in terms of electricity production. The maximum power density with 400 mM of potassium permanganate and the current density at this power density were found to be 93.13 mW/m 2 and 0.03 mA/cm 2 respectively (Eliato et al, 2016 ).…”

Section: Alternative Electron Acceptorsmentioning

confidence: 99%

An Overview of Electron Acceptors in Microbial Fuel Cells

2017

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Microbial fuel cells (MFC) have recently received increasing attention due to their promising potential in sustainable wastewater treatment and contaminant removal. In general, contaminants can be removed either as an electron donor via microbial catalyzed oxidization at the anode or removed at the cathode as electron acceptors through reduction. Some contaminants can also function as electron mediators at the anode or cathode. While previous studies have done a thorough assessment of electron donors, cathodic electron acceptors and mediators have not been as well described. Oxygen is widely used as an electron acceptor due to its high oxidation potential and ready availability. Recent studies, however, have begun to assess the use of different electron acceptors because of the (1) diversity of redox potential, (2) needs of alternative and more efficient cathode reaction, and (3) expanding of MFC based technologies in different areas. The aim of this review was to evaluate the performance and applicability of various electron acceptors and mediators used in MFCs. This review also evaluated the corresponding performance, advantages and disadvantages, and future potential applications of select electron acceptors (e.g., nitrate, iron, copper, perchlorate) and mediators.

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Section: Alternative Electron Acceptorsmentioning

confidence: 99%

An Overview of Electron Acceptors in Microbial Fuel Cells

2017

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“…The scientific principle of DCMFCs/MFCs employing the use of potassium permanganate proves that these systems need not use an exogenous catalyst or chemical compound due to the chemical versatility of the potassium permanganate. The catholyte improves the cathodic chamber's bioelectrochemical capacity and the mechanism of the overall flow of electrons from the anodic chamber to the highly efficient cathodic chamber seeded with a potassium permanganate electron acceptor [48]. Thus, the desirability is increased by an increase in catholyte dosage to the maximum concentration of 0.1 mg/L [48,49].…”

Section: Numerical Optimization Based On Ramp Plots For Desirability ...mentioning

confidence: 99%

Optimization and Modeling of a Dual-Chamber Microbial Fuel Cell (DCMFC) for Industrial Wastewater Treatment: A Box–Behnken Design Approach

Shabangu,

Chetty,

Bakare

2024

Energies

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Microbial fuel cells (MFCs) have garnered significant attention due to their capacity to generate electricity using renewable and carbon-neutral energy sources such as wastewater. Extensive experimental work and modeling techniques have been employed to dissect these processes and understand their respective impacts on electricity generation. The driving force is to enhance MFC performance for practical applications commercially. Among the various statistical modeling approaches, one particularly robust tool is the Design of Experiments (DoE). It serves to establish the relationships between different variables that influence MFC performance and allows for the optimization of the MFC configuration and operation for scaled-up performances in terms of bioelectricity generation. This study focused on optimizing microbial fuel cells (MFCs) for bioelectricity production using industrial wastewater treatment, employing the Box–Behnken design (BBD) methodology. Through an analysis of response surface models and ANOVA tests, it was found that a combined approach of reduced quadratic, reduced two-factor interaction, and linear models yielded sound results, particularly in voltage yield, COD removal, and current density. Second-order regression models predicted optimal conditions for various parameters, with surface area, temperature, and catholyte dosage identified as critical input variables for optimization. Under these conditions, conducted by the four-factor and three-level Box–Behnken design methodology in a double-chamber MFC unit considering eight output variables—CCV yield, % COD removal, current density, power density, % TSS removal, % CE, and % PO43−—the optimum values were 700 mV, 54.4%, 54.4 mA/m2, 73.7 mW/m2, 99%, 21.2%, and 100%, respectively. At optimum operating conditions, the results revealed a desirability of 76.6% out of a total of 92 iterations. The paper highlights the effectiveness of statistical ANOVA fit-statistics modeling and optimization in enhancing DCMFC performance, recommending its use as a sustainable bioenergy source. Furthermore, validation results supported the above optimization output response findings and confirmed the viability of biorefinery wastewater as an anolyte for scaling up DCMFC bioelectricity generation.

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“…To operate the MFC, 4 mL of the selected bacterial consortium aged 48 hr, along with 36 mL of synthetic swine wastewater, were introduced into the anode chamber. The cathode chamber was filled with 40 mL of 400 μM KMnO4, which serves as an effective electron acceptor (Eliato et al 2016). The consortium was allowed to accumulate in the anode chamber for 5 days to immobilize the bacterial cells onto the anode electrode surface.…”

Section: Dual-chamber Mfc Operationmentioning

confidence: 99%

Electricity generation in a ceramic separator microbial fuel cell employing a bacterial consortium for penicillin removal

2023

Archives of Environmental Protection

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The contamination of the environment by antibiotics has become a serious problem, supported by abundant scientific evidence of its negative impact on both aquatic ecosystems and human health. Therefore, it is crucial to intensify research efforts towards developing effective and efficient processes for removing antibiotics from the aquatic environment. In this study, a bacterial consortium capable of breaking down penicillin was employed in a ceramic separator microbial fuel cell (MFC) to generate electricity. The consortium's properties such as laccase activity, penicillin removal and microbial structure were studied. The SF11 bacterial consortium, with a laccase activity of 6.16±0.04 U/mL, was found to be effective in breaking down penicillin. The highest rate of penicillin removal (92.15±0.27%) was achieved when the SF11 consortium was incubated at 30 °C for 48 hours. Furthermore, when used as a whole-cell biocatalyst in a low-cost upflow MFC, the Morganella morganii-rich SF11 consortium demonstrated the highest voltage and power density of 964.93±1.86 mV and 0.56±0.00 W/m3, respectively. These results suggest that the SF11 bacterial consortium has the potential for use in ceramic separator MFCs for the removal of penicillin and electricity generation.

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Potassium permanganate as an electron receiver in a microbial fuel cell

Cited by 18 publications

References 18 publications

An Overview of Electron Acceptors in Microbial Fuel Cells

An Overview of Electron Acceptors in Microbial Fuel Cells

Optimization and Modeling of a Dual-Chamber Microbial Fuel Cell (DCMFC) for Industrial Wastewater Treatment: A Box–Behnken Design Approach

Electricity generation in a ceramic separator microbial fuel cell employing a bacterial consortium for penicillin removal

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