Improved performance of microbial fuel cell by using conductive ink printed cathode containing Co3O4 or Fe3O4

Bhowmick, Gourav Dhar; Das, Sovik; Verma, Harshlata; Neethu, B.; Ghangrekar, Makarand M.

doi:10.1016/j.electacta.2019.04.127

Cited by 67 publications

(10 citation statements)

References 25 publications

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“…Similarly, the energy ( W c ) harvested from the UFBFC connected to the capacitor‐based circuit was calculated for a single charging cycle using Equation (4) 24 :

Wc = \frac{1}{2} C ({V_{c}}^{2} - {V_{d}}^{2})

The normalized energy recovery (NER) was estimated by the energy harvested (W c ) to the effective anodic chamber volume, that is, kWh/m 3 . The NER from the UFBFC at the steady‐state mode of operation (connected to an external resistance of 100 Ω) was estimated in terms of the effective anodic chamber volume according to Equation (5) 27,28 :

NER = \frac{P \times t}{V_{w}}

where P is the power output estimated by V cell 2 /R , V cell is the voltage in V obtained against the external resistance R in Ω, t is the retention time in h, and V w is the effective anodic chamber volume in m 3 .…”

Section: Methodsmentioning

confidence: 99%

“…The normalized energy recovery (NER) was estimated by the energy harvested (W c ) to the effective anodic chamber volume, that is, kWh/m 3 . The NER from the UFBFC at the steady-state mode of operation (connected to an external resistance of 100 Ω) was estimated in terms of the effective anodic chamber volume according to Equation ( 5) 27,28 :…”

Section: Performance Monitoring Of the Ufbfcmentioning

confidence: 99%

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Ultrafiltration membrane bio‐fuel cell as an energy‐efficient advanced wastewater treatment system

Bhowmick

Ghangrekar

Zekker

et al. 2022

Intl J of Energy Research

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Summary A novel anaerobic ultrafiltration membrane bio‐fuel cell (UFBFC) was conceptualized to improve the efficiency of wastewater treatment with a reduced footprint and bioenergy recovery. The system with a working volume of 40 L reached a maximum power density of 23.3 mW/m2 while treating synthetic wastewater with initial chemical oxygen demand (COD) of 2026 ± 61 mg/L and 19.1 mW/m2 while treating actual fish processing wastewater with initial COD of 1915 ± 63 mg/L. The average COD removal efficiency of UFBFC was found to be almost similar (>97%) for both types of wastewaters showing the efficacy of the system in real‐life applications comparable to the existing treatment systems. The cost‐effective longitudinal vibrational mechanism (0.25 $/kLD of treated wastewater), with a frequency of 0.5 Hz and an amplitude of 8 mm, revealed superior anti‐biofouling ability for ultrafiltration membrane placed inside the anodic chamber of UFBFC than cost‐intensive conventional techniques (117 $/kLD in conventional MBR with aeration). The capacitor‐based power management circuit improved the maximum normalized energy recovery (58 Wh/m3) of UFBFC by over twice compared to UFBFC when operated with external resistance of 100 Ω (24 Wh/m3). The harvested energy by UFBFC with capacitor‐based power management system thus could successfully compensate the operational power requirement of the system, proving its practical field‐scale applications as an energy‐economic advanced wastewater treatment system. Highlights Ultrafiltration membrane bio‐fuel cell (UFBFC) for efficient wastewater treatment Cost‐effective longitudinal vibration technique for reduced membrane biofouling Chemical oxygen demand removal efficiency of UFBFC was >97% Capacitor‐based circuit improved normalized energy recovery of UFBFC UFBFC successfully used to treat synthetic as well as fish processing wastewater

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“…Similarly, the energy ( W c ) harvested from the UFBFC connected to the capacitor‐based circuit was calculated for a single charging cycle using Equation (4) 24 :

Wc = \frac{1}{2} C ({V_{c}}^{2} - {V_{d}}^{2})

NER = \frac{P \times t}{V_{w}}

Section: Methodsmentioning

confidence: 99%

Section: Performance Monitoring Of the Ufbfcmentioning

confidence: 99%

Ultrafiltration membrane bio‐fuel cell as an energy‐efficient advanced wastewater treatment system

Bhowmick

Ghangrekar

Zekker

et al. 2022

Intl J of Energy Research

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“…The better performance of graphite felt was attributed to the presence of greater microbial diversity and abundance of microbial population on the anode surface. Furthermore, different alternate materials, such as waste medicine wrappers and blended metal cathodes with conductive coating, have also been used to enhance the efficiency of MFCs (Bhowmick et al, 2019b). In addition, cathode of a MFC and other METs is often supplemented with catalyst to accelerate the rate of ORR for ameliorating the recovery of bioresources.…”

Section: Electrode Materialsmentioning

confidence: 99%

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

2021

Self Cite

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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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“…With the increasing world population and ever-mounting energy demands, the development and deployment of clean energy technologies are critically important from the purview of sustainable development. In this context, microbial fuel cells (MFCs) have garnered tremendous attention from the global scientific community, , because of their ability to recover renewable energy directly from the oxidizable organic matter present in wastewater and other organic wastes. , In a typical dual-chamber MFC, electrons and protons are generated in the anodic chamber, through oxidation of organic matter by electrochemically active microorganisms. These biocatalytically generated electrons then migrate to the cathode through an external circuit, wherein they reduce the dissolved oxygen in the catholyte to water.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and Sulfur Codoped Graphene Macroassemblies as High-Performance Electrocatalysts for the Oxygen Reduction Reaction in Microbial Fuel Cells

Verma

Chakraborty

Chowdhury

et al. 2020

ACS Sustainable Chem. Eng.

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Microbial fuel cells (MFCs) are receiving considerable attention for generating clean and sustainable electrical energy directly from wastewater. The development of highly efficient, durable, and inexpensive oxygen reduction electrocatalysts is vital to the fabrication of commercially viable MFCs. Herein, nitrogen (N) and sulfur (S) codoped graphene aerogels (NSGAs) were synthesized hydrothermally via an environmentally benign method, and their application potential as electrocatalysts for the oxygen reduction reaction (ORR) in double-chamber MFCs was systematically evaluated. The NSGAs displayed outstanding electrocatalytic activity for ORR in both cyclic voltammogram experiments and electrochemical impedance spectroscopy measurements. Further, when applied as cathodes in MFCs, the NSGAs could deliver a maximum volumetric power density of up to 13.78 ± 0.43 W m −3 , which was nearly two times higher than that of the conventional platinum/carbon catalyst (7.01 ± 0.36 W m −3 ). The impressive electrocatalytic performance of the NSGAs can be attributed to their interconnected porosity, and the presence of N and S elements with diverse bonding states in their twodimensional nanoscale building blocks. The outcome of this investigation lays out an important research direction for the development of the next generation of robust metal-free ORR electrocatalysts for application in MFCs and related devices.

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Improved performance of microbial fuel cell by using conductive ink printed cathode containing Co3O4 or Fe3O4

Cited by 67 publications

References 25 publications

Ultrafiltration membrane bio‐fuel cell as an energy‐efficient advanced wastewater treatment system

Ultrafiltration membrane bio‐fuel cell as an energy‐efficient advanced wastewater treatment system

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

Nitrogen and Sulfur Codoped Graphene Macroassemblies as High-Performance Electrocatalysts for the Oxygen Reduction Reaction in Microbial Fuel Cells

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