Recent advances in microbial fuel cells (<scp>MFCs</scp>) and microbial electrolysis cells (<scp>MECs</scp>) for wastewater treatment, bioenergy and bioproducts

Zhou, Minghua; Wang, Hongyu; Hassett, Daniel J.; Gu, Tingyue

doi:10.1002/jctb.4004

Cited by 230 publications

(109 citation statements)

References 97 publications

(118 reference statements)

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“…The bacterial biofilm produced at anode acts as catalyst to convert the chemical energy of the organic molecule into electrons while the oxygen gets reduced to form water at cathode [10,11].…”

Section: Introduction To Microbial Fuel Cellsmentioning

confidence: 99%

Electrode materials for microbial fuel cells: nanomaterial approach

Mustakeem

2015

Mater Renew Sustain Energy

207

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Microbial fuel cell (MFC) technology has the potential to become a major renewable energy resource by degrading organic pollutants in wastewater. The performance of MFC directly depends on the kinetics of the electrode reactions within the fuel cell, with the performance of the electrodes heavily influenced by the materials they are made from. A wide range of materials have been tested to improve the performance of MFCs. In the past decade, carbon-based nanomaterials have emerged as promising materials for both anode and cathode construction. Composite materials have also shown to have the potential to become materials of choice for electrode manufacture. Various transition metal oxides have been investigated as alternatives to conventional expensive metals like platinum for oxygen reduction reaction. In this review, different carbon-based nanomaterials and composite materials are discussed for their potential use as MFC electrodes.

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Section: Introduction To Microbial Fuel Cellsmentioning

confidence: 99%

Electrode materials for microbial fuel cells: nanomaterial approach

Mustakeem

2015

Mater Renew Sustain Energy

207

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“…La densidad de potencia generada por una MFC no podrá llegar a ser igual o mejor que la de una pila de combustible químico (Zhou et al, 2013), sin embargo, esto no estaría indicando que la tecnología de las MFC no sea promisoria; las MFC ofrecen un medio económico para el tratamiento de aguas residuales, donde al parecer el electrodo actuaría como catalizador del proceso al aumentar las tasas de consumo de sustrato. Además, al ser sistemas anaerobios, evitan los costos de aireación y por el contrario, generan energía en el proceso (Huggins et al, 2013).…”

Section: Discussionunclassified

“…La tecnología de las celdas de combustible microbianas, MFC por sus siglas en inglés (Microbial Fuel Cell), se muestra a futuro como una fuente alternativa de energía, con el beneficio de poder eliminar compuestos tóxicos del ambiente o disminuir los niveles de materia orgánica que son vertidos a las fuentes de agua (Zhou et al, 2013). Las MFC se componen de una o dos cámaras con dos electrodos (ánodo y cátodo) en los cuales se forman biopelículas microbianas capaces de degradar sustratos energéticos; producto del metabolismo microbiano se oxidan compuestos en la cámara del ánodo, produciendo CO 2 , protones y electrones, estos últimos son transportados desde el ánodo hasta el cátodo mediante un circuito externo.…”

Section: Introductionunclassified

Diversidad bacteriana asociada a biopelículas anódicas en celdas de combustible microbianas alimentadas con aguas residuales.

Collazos

Montaño

2017

Acta biol. Colomb.

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RESUMENEl presente trabajo evaluó la diversidad bacteriana asociada a las biopelículas formadas sobre los ánodos de celdas de combustible microbianas, por medio del análisis del gen del ARNr 16S y observaciones por microscopía electrónica de barrido. Se construyeron celdas de combustible microbianas de una cámara que permanecieron en operación durante 30 días utilizando muestras ambientales como inóculo y único sustrato energético; las celdas fueron monitoreadas en función de la producción de energía durante el desarrollo del experimento; al finalizar los ensayos, se realizó la caracterización molecular y observaciones mediante microscopía electrónica de barrido a las biopelículas formadas. Se reportan valores de densidad de potencia máxima de 4,85 mW/m 2 para el agua residual doméstica y de 1,85 mW/m 2 para el caso del agua residual industrial, con disminuciones de 71 % de la DBO para el agua residual doméstica y de 59 % de la DBO para el caso del agua residual industrial. Se logró la recuperación de 15 secuencias únicas provenientes de la amplificación del gen del ARNr 16S obtenidas a partir de las biopelículas formadas sobre los ánodos. El análisis filogenético ubicó estas secuencias en la clase Deltaproteobacteria. Los dos sustratos ambientales contienen una importante e interesante diversidad microbiana, mostrándolos promisorios para la construcción y operación de MFC y la implementación de procesos de biodegradación de materia orgánica.Palabras clave: aguas residuales, ARNr 16S, celdas de combustible microbianas, diversidad bacteriana, generación de energía, microscopia electrónica de barrido. ABSTRACTThis study evaluated the bacterial diversity associated with biofilms formed on the anode of microbial fuel cells (MFC), by analyzing the 16S rRNA gene and observations by scanning electron microscopy. Single chambered MFC were constructed and kept in operation for 30 days using environmental samples as inoculum and sole energy substrate; the MFC were monitored as a function of energy production in the course of the experiment; at endpoint, molecular characterization and observations using scanning electron microscopy was performed to the formed biofilms. Values of maximum power density of 4.85 mW/m2 for domestic wastewater and 1.85 mW/m2 in the case of industrial wastewater are reported, with declines of 71 % of the BOD for domestic wastewater and 59 % of the BOD in the case of industrial wastewater. Recovery of 15 unique sequences from the amplification of 16S rRNA gene obtained from the biofilms formed on the anodes was accomplished. Phylogenetic analysis placed these sequences in the Deltaproteobacteria class. The two environmental substrates contain an important and interesting microbial diversity, showing them very promising for the construction and operation of MFC and implementing biodegradation of organic material.

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“…When microbial consortia are used, they may also contain electrically inert bacteria. These passive members contribute to synergistic electrogenic biofilm formation on the anode, thereby enhancing the electron donation by EAB [24]. Such synergistic activities are also known to enhance the otherwise slow natural degradation processes in addition to electricity generation [25].…”

Section: Set Up Of a Microbial Fuel Cellmentioning

confidence: 99%

Microbial Fuel Cells as Alternate Source of Energy: Research, Advancements and Future Prospects in Indian Scenario

Basheer¹,

Suma²,

Sreelekshmy³

et al. 2017

Asian J. Chem.

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Today, the world is on the verge of transformation from fossil fuels to alternative and sustainable renewable sources due to many reasons. Many plausible technologies have been developed of which, energy from biomass and biowaste is a widely accepted choice. In India too, the fuel crisis is imminent and renewable fuel sources are being developed on a large scale to meet energy requirements. However, generation of electricity from biomass and biowaste is a rather unconventional method which is less exploited. The technology that possesses immense future prospective requires collaboration of expertise from various disciplines of science. Here we present a comprehensive view of developments and novel approaches in microbial fuel cell research in Indian scenario in the backdrop of the developments on a global scale. Though the research outputs in India in terms of power density is in par with that on global scale, we lag behind in bringing a collaborative approach.

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Recent advances in microbial fuel cells (MFCs) and microbial electrolysis cells (MECs) for wastewater treatment, bioenergy and bioproducts

Cited by 230 publications

References 97 publications

Electrode materials for microbial fuel cells: nanomaterial approach

Electrode materials for microbial fuel cells: nanomaterial approach

Diversidad bacteriana asociada a biopelículas anódicas en celdas de combustible microbianas alimentadas con aguas residuales.

Microbial Fuel Cells as Alternate Source of Energy: Research, Advancements and Future Prospects in Indian Scenario

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