Bioaugmentation using Pseudomonas aeruginosa with an approach of intermittent aeration for enhanced power generation in ceramic MFC

Bagchi, Somdipta; Behera, Manaswini

doi:10.1016/j.seta.2021.101138

Cited by 12 publications

(11 citation statements)

References 21 publications

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“…These shuttle mediators play an important role in extracellular electron transfer enhancement in this microorganism. Bagchi and Behera 32 inoculum Pseudomonas aeruginosa with anaerobic sludge in an MFC (MFC P + A ). The results showed that the MFC P + A had a higher CE of 10.4%, followed by MFC seeded with only Pseudomonas aeruginosa (9.7%) and the MFC seeded with only anaerobic sludge (4.41%).…”

Section: Resultsmentioning

confidence: 99%

Exploring the effect of attractive and repulsive magnetic field on electricity generation and microbial community in microbial fuel cells

Lay

Deng

Chang

2021

Intl J of Energy Research

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External magnetic field technology enhances microbial electrochemical reactions in biological processes. This study added Neodymium-Iron-Boron magnets to the outside of a double-chamber cubic microbial fuel cell (MFC) to explore the attractive or repulsive magnetic field effects at various intensities (0, 60, and 120 mT) on MFC performance. The results show that an extra 120 mT repulsive magnetic field can generate a peak power density of 144 mW/m 2 and a maximum current density of 1558 mA/m 2 . This value is 45 and 8 times higher, respectively, compared without adding the magnetic field. Moreover, adding 120 mT repulsive magnetic field can increase coulombic efficiency (CE) to 63.0%, which is higher than the CE of 25.9% without magnetic field addition. Taxonomy profiling classification results show that Geobacter and Pseudomonas, which can achieve e-pili and redox mediators, were the domain microorganism community. Magnetic fields enhance the electron movement efficiency through extracellular electron transfer mechanisms, including e-pili and redox mediators provided by the exoelectrogenic microorganism to enlarge the chemical oxygen demand removal efficiency and CE value as well as increase the electron transfer probability to the electrode.

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Section: Resultsmentioning

confidence: 99%

Exploring the effect of attractive and repulsive magnetic field on electricity generation and microbial community in microbial fuel cells

Lay

Deng

Chang

2021

Intl J of Energy Research

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“…The levels of inocula were mixed inoculum (I1) and maturated inoculum (I2), and the substrate levels were fermentation CWW (S1) and leached CWW (S2); all these were previously described. The experiment was made in duplicate and with two controls, using an electrogenic medium of reference adapted from Bagchi et al [35]. The experimental design's set of conditions are presented in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Determination of Electrogenic Potential and Removal of Organic Matter from Industrial Coffee Wastewater Using a Native Community in a Non-Conventional Microbial Fuel Cell

Erazo

Agudelo-Escobar

2023

Processes

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Microbial fuel cells (MFCs) are an alternative to conventional wastewater treatments that allow for the removal of organic matter and cogeneration of electrical energy, taking advantage of the oxidation–reduction metabolism of organic compounds conducted by microorganisms. In this study, the electrogenic potential and the capacity for the reduction of the organic matter of native microbial communities in wastewater from the wet processing of coffee were evaluated using open-cathode MFCs. To determine the electrogenic potential, a factorial experimental design was proposed in which the origin of the residual water and the source of the inoculum were evaluated as factors. The MFCs operated for 21 days in both open-circuit and closed-circuit operation modes. Voltage records, current determinations, and chemical oxygen demand (COD) analyses were used to establish the power reached in the electrochemical system and the degree of the decontamination of the wastewater. During the MFC operation, voltages from 200–400 mV and power and current densities from 300–900 mW·m−2 and 10–22 mA·m−2, respectively, were reached. The inoculum used, with a statistical significance of α < 0.05, influenced the electrogenic performance of the microbial fuel cell. The previous process of adaptation to the operational conditions of the MFCs of the native microbial community positively influenced the current generation in the system. The degradation rates reached 500–600 mg·L−1·day−1, indicating the metabolic capacity of the microbial community in the MFCs to achieve the decontamination of wastewater from the coffee agroindustry. It was shown the implementation of bioelectrochemical systems constituted a viable option for the treatment of agricultural waste in Colombia. In addition, it was observed the capacity to cogenerate electrical energy from the biotransformation of the polluting organic matter in the effluents of the coffee industry.

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“…However, it is the study of pure cultures that can elucidate the EET and electro-assisted biodegradation mechanisms in terms of the specific genetic and enzymatic steps followed. Therefore, these studies can reduce the complexity of understanding the microbial communities [ 23 , 24 ] or assist when MFCs are used as biosensors for specific target analytes.…”

Section: Introductionmentioning

confidence: 99%

“…Pseudomonas is a metabolically versatile bacterium that can be found in diverse environments; hence, it is able to compete for a variety of substrates under both aerobic and anoxic conditions, and constitutes a particularly efficient anode biocatalyst in MFC systems with enormous potential for bioremediation of environmental pollutants [ 24 – 26 ]. Pseudomonas spp.…”

Section: Introductionmentioning

confidence: 99%

Electricity generation and real oily wastewater treatment by Pseudomonas citronellolis 620C in a microbial fuel cell: pyocyanin production as electron shuttle

Varnava,

Persianis,

Ieropoulos

et al. 2024

Bioprocess Biosyst Eng

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In the present study, the potential of Pseudomonas citronellolis 620C strain was evaluated, for the first time, to generate electricity in a standard, double chamber microbial fuel cell (MFC), with oily wastewater (OW) being the fuel at 43.625 mg/L initial chemical oxygen demand (COD). Both electrochemical and physicochemical results suggested that this P. citronellolis strain utilized efficiently the OW substrate and generated electricity in the MFC setup reaching 0.05 mW/m2 maximum power. COD removal was remarkable reaching 83.6 ± 0.1%, while qualitative and quantitative gas chromatography/mass spectrometry (GC/MS) analysis of the OW total petroleum and polycyclic aromatic hydrocarbons, and fatty acids revealed high degradation capacity. It was also determined that P. citronellolis 620C produced pyocyanin as electron shuttle in the anodic MFC chamber. To the authors’ best knowledge, this is the first study showing (phenazine-based) pyocyanin production from a species other than P. aeruginosa and, also, the first time that P. citronellolis 620C has been shown to produce electricity in a MFC. The production of pyocyanin, in combination with the formation of biofilm in the MFC anode, as observed with scanning electron microscopy (SEM) analysis, makes this P. citronellolis strain an attractive and promising candidate for wider MFC applications.

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Bioaugmentation using Pseudomonas aeruginosa with an approach of intermittent aeration for enhanced power generation in ceramic MFC

Cited by 12 publications

References 21 publications

Exploring the effect of attractive and repulsive magnetic field on electricity generation and microbial community in microbial fuel cells

Exploring the effect of attractive and repulsive magnetic field on electricity generation and microbial community in microbial fuel cells

Determination of Electrogenic Potential and Removal of Organic Matter from Industrial Coffee Wastewater Using a Native Community in a Non-Conventional Microbial Fuel Cell

Electricity generation and real oily wastewater treatment by Pseudomonas citronellolis 620C in a microbial fuel cell: pyocyanin production as electron shuttle

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