Advanced microbial fuel cell for waste water treatment—a review

Jatoi, Abdul Sattar; Akhter, Faheem; Mazari, Shaukat Ali; Nizamuddin, Sabzoi; Aziz, Shaheen; Soomro, Suhail Ahmed; Mubarak, Nabisab Mujawar; Baloch, Humair Ahmed; Memon, Abdul Qayoom; Ahmed, Shoaib

doi:10.1007/s11356-020-11691-2

Cited by 83 publications

(22 citation statements)

References 123 publications

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“…MFCs were inoculated with effluent from a primary clarifier at The Pennsylvania State University Wastewater Treatment Plant (PSU-WWTP), a frequently used inoculum source for MFC reactors [ 2 ], and an enriched cow rumen sample. The rumen sample was collected from a cow at the dairy complex of The Pennsylvania State University and enriched for two weeks in a flask using H 2(g) and fumarate as electron donor and acceptor, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Before 2010, most of the reported results did not exceed 0.1 Wm −2 . However, in recent years, power densities greater than 1 Wm −2 are more frequently found [ 1 , 2 ]. This rapid development has been primarily due to improvements in physical and chemical factors (e.g., architecture, electrode materials, membranes, and buffering) [ 1 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

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Rumen Inoculum Enhances Cathode Performance in Single-Chamber Air-Cathode Microbial Fuel Cells

2022

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During the last decade, bioprospecting for electrochemically active bacteria has included the search for new sources of inoculum for microbial fuel cells (MFCs). However, concerning power and current production, a Geobacter-dominated mixed microbial community derived from a wastewater inoculum remains the standard. On the other hand, cathode performance is still one of the main limitations for MFCs, and the enrichment of a beneficial cathodic biofilm emerges as an alternative to increase its performance. Glucose-fed air-cathode reactors inoculated with a rumen-fluid enrichment and wastewater showed higher power densities and soluble chemical oxygen demand (sCOD) removal (Pmax = 824.5 mWm−2; ΔsCOD = 96.1%) than reactors inoculated only with wastewater (Pmax = 634.1 mWm−2; ΔsCOD = 91.7%). Identical anode but different cathode potentials suggest that differences in performance were due to the cathode. Pyrosequencing analysis showed no significant differences between the anodic community structures derived from both inocula but increased relative abundances of Azoarcus and Victivallis species in the cathodic rumen enrichment. Results suggest that this rarely used inoculum for single-chamber MFCs contributed to cathodic biofilm improvements with no anodic biofilm effects.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rumen Inoculum Enhances Cathode Performance in Single-Chamber Air-Cathode Microbial Fuel Cells

2022

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“…There are many cell types, although in general the cell is connected to an external circuit; the composition of the cell consists of an anodic and cathodic chamber separated by a proton exchange membrane. The anodic chamber is customarily in anaerobiosis, and the cathodic chamber is in contact with oxygen [13][14][15]. In this sense, Cecconet et al (2018) used agroindustrial waste in their cells, which were made with graphite electrodes, and managed to generate voltage peaks of 637 mV with an external resistance of 20.4 Ω on day 51.…”

Section: Introductionmentioning

confidence: 99%

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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“…Moreover, the depletion of these non-renewable fuels with their adverse impacts on the environment is another prominent concern for the mankind. To alleviate this global energy crisis, scientists are trying to focus on developing eco-friendly, renewable, and sustainable bioenergy sources (Jatoi et al, 2021). Thus, the production of bioenergy like bioelectricity and biofuel via the biodegradation of organic and other oxidizable compounds present in wastewater by microbiota could evolve as a suitable renewable and self-sustainable cost-effective revelation.…”

Section: Introductionmentioning

confidence: 99%

“…In the recent era, METs have been extensively researched for their incredible potential to generate green energy and valuables with the concomitant treatment of wastewater (Neethu and Ghangrekar, 2017;Vinayak et al, 2021). Generally, in different kinds of METs, electroactive microorganisms formally known as exoelectrogens consume organic matter present in the wastewater as a substrate for their cell growth and eliminate contaminants with simultaneous generation of bioelectricity (Jatoi et al, 2021). Therefore, self-sustainable METs are advantageous due to their low energy-intensive, cost-effective, and eco-friendly nature over other conventional wastewater treatment processes (Crini and Lichtfouse, 2019).…”

Section: Introductionmentioning

confidence: 99%

A Sustainable Approach for the Production of Green Energy With the Holistic Treatment of Wastewater Through Microbial Electrochemical Technologies: A Review

2021

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With the plausible depletion of fossil fuels in the near future and its associated environmental impacts, researchers have instigated the search for eco-friendly renewable bioenergy. Moreover, the increase in water pollution by industrial and anthropogenic activities is another alarming global concern. In this regard, the production of renewable and sustainable green bioenergy utilizing wastewater through microbial electrochemical technologies (METs) can alleviate these crucial problems by providing a sustainable solution to meet both the demands of energy and fresh water supply. Moreover, different bio-centered techniques such as nitrification and denitrification for nitrogen removal, and elimination of carcinogenic metals, pathogens, and organic components utilizing microbiota followed by toxicity sensing of different pollutants have been efficaciously exhibited through METs. However, inferior bioenergy production and recovery of low biomass yield in METs with high operational cost are noteworthy bottlenecks that hinder the scalability of this technology. Therefore, this review elaborates different physicochemical factors affecting the performance of METs, microbial interaction for the development of stable biofilm and so forth. Moreover, a broad overview on the production of bioenergy, along with the removal of pollutants from wastewater through different types of METs are also highlighted. Furthermore, the production of biofuels like ethanol, methanol, biodiesel, and gaseous fuel like bio-H2 coupled with power generation using photosynthetic microorganisms via CO2 sequestration through METs are also discussed. Additionally, recent developments with future scope for the field-scale implementation of METs along with their bottlenecks have been discussed, which has not been critically reviewed to date.

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Advanced microbial fuel cell for waste water treatment—a review

Cited by 83 publications

References 123 publications

Rumen Inoculum Enhances Cathode Performance in Single-Chamber Air-Cathode Microbial Fuel Cells

Rumen Inoculum Enhances Cathode Performance in Single-Chamber Air-Cathode Microbial Fuel Cells

Use of Onion Waste as Fuel for the Generation of Bioelectricity

A Sustainable Approach for the Production of Green Energy With the Holistic Treatment of Wastewater Through Microbial Electrochemical Technologies: A Review

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