Sustained energy production from wastewater in microbial fuel cell: effect of inoculum sources, electrode spacing and working volume

Singh, Aradhana; Kaushik, Anubha

doi:10.1007/s13205-021-02886-6

Cited by 16 publications

(3 citation statements)

References 47 publications

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“…All volumes were expressed in mL. 3,17 determined by dividing P and I with the anode's surface area (A). The voltage-current density polarization curves were calculated using the obtained current and voltage values at different external resistance values (2000, 1500, 1200, 1000, 700, 500, 300, 150, 100, and 50 Ω).…”

Section: Electrical Powerproduction In the Mfc Systemmentioning

confidence: 99%

Power production using a batch double‐chamber microbial fuel cell from brewery wastewater: Effects of electron acceptors

Tessema

Yemata

2022

Intl J of Energy Research

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Summary In recent decades, shortage and crisis of energy being a serious issue of concern all over the world as the fossil fuel reserves have been diminishing. A particular emphasis has been given for bio‐energy harvesting from waste and cellulosic biomass by employing an efficient conversion system. Among these, microbial fuel cell (MFC) systems are an emerging promising technology for the effective wastewater treatment. However, the collective effect of waste substrates, inoculum composition, and catholyte concentrations on the performance of MFC system remains unclear. Hence, this study aimed to investigate the effect of electron acceptors under different set of parameters in response to its electrochemical performance inoculum chemical oxygen demand (COD) concentration and type of the electron acceptor on the performance of the electrochemical has been studied. A dual‐chamber MFC with 0.4 to 0.6 M values of potassium permanganate (KMnO4) and Ferricyanide K3[Fe(CN)6], (900‐2520 mgL−1) of COD values, and oxygen as a control substance were used. The experiments were carried out in a batch mode for 20 days of operation. The results reveal that MFC with 0.4 M KMnO4 provides an external output voltage of 310.09 ± 0.06 mV and external output power density value of 400.4 ± 0.46 mWm−2 while 0.4 M K3[Fe(CN)6] results an external output voltage of 252.18 ± 0.12 mV and an external output power density value of 380.28 ± 0.24 mWm−2. Analysis of variance was done using central composite design approach to support the significance of each experimental factors on the responses and the result shows that the confidence interval of 95% for all the parameters that were statistically significant.

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Section: Electrical Powerproduction In the Mfc Systemmentioning

confidence: 99%

Power production using a batch double‐chamber microbial fuel cell from brewery wastewater: Effects of electron acceptors

Tessema

Yemata

2022

Intl J of Energy Research

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“…It is also important to emphasize that the composition of the wastewater and the type of electrode materials utilized can have a significant impact on the effectiveness of these systems. In the MFC, wastewater-growing microorganisms consume the organic substrate and release electrons that are then used to enhance the process of generating energy [ 26 ]. In order to break down the substrate and produce energy, the type of microbial population in the biofilm is essential.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Characterization of Bacteria with High Electroactive Potential from Poultry Wastewater

Temirbekova

Tekebayeva²,

Temirkhanov³

et al. 2023

Biology

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Natural resources are in short supply, and the ecosystem is being damaged as a result of the overuse of fossil fuels. The creation of novel technology is greatly desired for investigating renewable and sustainable energy sources. Microorganisms have received a lot of interest recently for their potential to transform organic waste into sustainable energy and high-value goods. New exoelectrogens that can transmit electrons to electrodes and remove specific wastewater contaminants are expected to be studied. In this study, we examined three distinct samples (as determined by chemical oxygen demand and pH) that can be used as anolytes to generate power in single-chamber and double-chamber microbial fuel cells using graphite electrodes. Wastewater from poultry farms was studied as an exoelectrogenic anolyte for microbial fuel cell power generation. The study examined 10 different bacterial strains, numbered A1 through A10. Due to their highly anticipated capacity to metabolize organic/inorganic chemicals, the diverse range of microorganisms found in poultry wastewater inspired us to investigate the viability of generating electricity using microbial fuel cells. From the investigated bacterial strains, the highest voltage outputs were produced by strains A1 (Lysinibacillus sphaericus) and A2 (Bacillus cereus), respectively, at 402 mV and 350 mV. Among the 10 different bacterial strains, strain A6 generated the least amount of electricity, measuring 35.03 mV. Furthermore, a maximum power density of 16.16 1.02 mW/m2 was achieved by the microbial fuel cell using strain A1, significantly outperforming the microbial fuel cell using a sterile medium. The strain A2 showed significant current and power densities of 35 1.12 mA/m2 and 12.25 1.05 mW/m2, respectively. Moreover, in the two representative strains, chemical oxygen demand removal and Coulombic efficiency were noted. Samples from the effluent anode chamber were taken in order to gauge the effectiveness of chemical oxygen demand removal. Wastewater had an initial chemical oxygen demand content of 350 mg/L on average. Strains A1 and A2 decomposed 94.28% and 91.71%, respectively, of the organic substrate, according to the chemical oxygen demand removal efficiency values after 72 h. Strains A1 and A2 had electron donor oxidation efficiencies for 72 h of 54.1% and 60.67%, respectively. The Coulombic efficiency increased as the chemical oxygen demand decreased, indicating greater microbial electroactivity. With representative strains A1 and A2, Coulombic efficiencies of 10% and 3.5%, respectively, were obtained in the microbial fuel cell. The findings of this study greatly advance the field as a viable source of power technology for alternative energy in the future, which is important given the depletion of natural resources.

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“…This technology could be considered for developing in the future in adopting back-to-nature concepts that use natural organic substrates [9,10], such as wastewater-based biomass, enriching carbons, and nutrients utilized by the electrogenic bacteria [11,12]. The research of MFC is still lacking in power generation affected by high internal resistance [13,14] and affected by parameters' control (pH, and temperature) [15], anolyte [16], catholyte [17][18][19][20], inoculum [21,22], anode [23,24], cathode [25,26], electrode spacing [27,28], separator [29,30], flowrate [31,32], retention time [33], wiring system [34], design/construction [35], and configuration [36][37][38]. Design and configuration modifications are studied since the highest internal resistance mostly occurs on the anode chamber.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Power Generation and Organic Removal in Double Anode Chamber Designed Dual-Chamber Microbial Fuel Cell (DAC-DCMFC)

Samudro

Imai

Hung

2021

Water

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One of the important factors in enhancing the performance of microbial fuel cells (MFCs) is reactor design and configuration. Therefore, this study was conducted to evaluate the regressors and their operating parameters affecting the double anode chamber–designed dual-chamber microbial fuel cell (DAC-DCMFC) performance. Its primary design consists of two anode chamber compartments equipped with a separator and cathode chamber. The DAC-DCMFCs were parallelly operated over 8 days (60 days after the acclimation period). They were intermittently pump-fed with the different organic loading rates (OLRs), using chemically enriched sucrose as artificial wastewater. The applied OLRs were adjusted at low, medium, and high ranges from 0.4 kg.m−3.d−1 to 2.5 kg.m−3.d−1. The reactor types were type 1 and type 2 with different cathode materials. The pH, temperature, oxidation-reduction potential (ORP), optical density 600 (OD600), chemical oxygen demand (COD), and total organic carbon (TOC) were measured, using standard analytical instruments. In general, the power production achieved a maximum of 866 ± 44 mW/m2, with a volumetric power density of 5.15 ± 0.26 W/m3 and coulombic efficiency of 84%. Two-stage COD and TOC removal at medium OLR achieved a range of 60–80%. Medium OLR is the recommended level to enhance power production and organic removal in DAC-DCMFC. The separated anode chambers into two parts in a dual anode chamber microbial fuel cell adjusted by various organic loadings expressed a preferable comprehension in the integrated MFCs for wastewater treatment.

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Sustained energy production from wastewater in microbial fuel cell: effect of inoculum sources, electrode spacing and working volume

Cited by 16 publications

References 47 publications

Power production using a batch double‐chamber microbial fuel cell from brewery wastewater: Effects of electron acceptors

Power production using a batch double‐chamber microbial fuel cell from brewery wastewater: Effects of electron acceptors

Isolation and Characterization of Bacteria with High Electroactive Potential from Poultry Wastewater

Enhancement of Power Generation and Organic Removal in Double Anode Chamber Designed Dual-Chamber Microbial Fuel Cell (DAC-DCMFC)

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