Comparative evaluation of performance and electrochemistry of microbial fuel cells with different anode structures and materials

Nam, Taehui; Son, Sunghoon; Koo, Bonyoung; Tran, Huong Viet Hoa; Kim, Eun Jung; Choi, Yong-Sung

doi:10.1016/j.ijhydene.2017.07.180

Cited by 72 publications

(24 citation statements)

References 33 publications

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“…CB showed the best current recovery among the three carbon anodes. This agrees with previous reports that demonstrated the superiority of CB over carbon paper (Logan et al, 2007), carbon cloth (Nam et al, 2017), and carbon mesh (Wang et al, 2009). BC yielded a current that was approximately half of that by CB and was comparable to that for PNWG in this study.…”

Section: Discussionsupporting

confidence: 93%

Comparative evaluation of fibrous artificial carbons and bamboo charcoal in terms of recovery of current from sewage wastewater

Nagahashi

Yoshida

2021

J. Gen. Appl. Microbiol.

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In this study, two fibrous carbon anodes (namely (PNWG) and carbon brush (CB) made from artificial carbon) and bamboo charcoal (BC) were evaluated for current recovery from sewage wastewater. When these anodes were polarized at 0.2 V vs. Ag/AgCl in sewage wastewater, CB produced a maximum current of 2.9 1.5 1.4 A/m 2 . This exceeded that produced by PNWG ( A/m 2 ) and BC ( A/m 2 ). The CB was superior to those achieved with the accumulative charge recovery achieved with other two 1.6-2.2-NWG BC ( and fold higher than that with P and , respectively). During the cyclic voltammetry analysis, CB demonstrated the highest catalytic current with maximum -0.6 0.4 potential in the range of to V vs. Ag/AgCl and the smallest anode resistance (0.20 Ω that the fibrous anodes (CB and PNWG) m 2 ). Direct cell counting revealed attached most the anodes (80%), whereas BC the proportion of of the cells in did not. In contrast,Geobacter species, a representative electrogenic microorganism in the total bacteria, was similar among the three anodes (4.4-5.8%). The observed to be tubular microbial fuel cell (ϕ 5.0 cm core wrapped with an anion exchange ) equipped with an air-chamber membrane A/ 2 . This is higher than those reported in the (AEM) and the CB delivered a current of 1.8 m existing literature for the same microbial fuel cell (MFC) configuration. This indicates that the anode from planar the current the alteration of to brush can contribute toward improving recovery The BC needs improvement to have more through the air-cathode-AEM-MFC. specific surface area, whereas it showed superiority in cost efficiency considering material and processing.

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Section: Discussionsupporting

confidence: 93%

Comparative evaluation of fibrous artificial carbons and bamboo charcoal in terms of recovery of current from sewage wastewater

Nagahashi

Yoshida

2021

J. Gen. Appl. Microbiol.

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“…Different strategies related to surface structuration, surface modification and/or activation were developed on carbon-based materials and have recently been reviewed. [3],[4], [5], [6], [7], [8] Among these strategies, the chemical functionalization of the bioanode through diazonium chemistry has been demonstrated to be successful at increasing the current densities, notably in Microbial Fuel Cells (MFCs). [9], [10], [11], [12], [13], [14], [15] The electron transfer from the electroactive bacteria to the anode is indeed affected by the anode properties and its surface modification.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Reductive electrografting of in situ produced diazopyridinium cations: Tailoring the interface between carbon electrodes and electroactive bacterial films

Smida

Lebègue

Bergamini

et al. 2018

Bioelectrochemistry

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Carbon electrodes were functionalized through the reduction of diazopyridinium cations that are produced from in situ diazotization of 2-, 3- and 4-aminopyridine. Diazopyridinium salts were much more rarely employed for surface functionalization than other aryldiazonium derivatives. A study combining X-ray Photoelectron Spectroscopy (XPS), contact angle, ellipsometry, Atomic Force Microscopy (AFM) measurements and electrochemical analyses demonstrates that films obtained from 4-diazopyridinium cations are hydrophilic, dense, compact but sufficiently thin to preserve fast electronic transfer rate, being then relevant to efficiently tailor the interface between the anode surface and an electroactive biofilm. Microbial Fuels Cells (MFCs) with pyridine-functionalized graphite anodes exhibit faster development and improved performances than MFCs operating with bare graphite anodes.

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“…A stainless steel plate was used as an electrode connector (1.0 cm 2 of contact area) (P), a stainless steel plate and a rounded-rim current collector were used (4.3 cm 2 of contact area) (PC), and a stainless steel plate and a stainless-steel-mesh current collector were used (6.5 cm 2 of contact area) (PM). and 3-cm diameter [21,[24][25][26]. A brush electrode was made with a carbon fiber brush (25-mm diameter and 50-mm length) twisted between two titanium rods (length 70 mm, 17 gauge; grade 2, Seoul Titanium).…”

Section: Mfc Constructionmentioning

confidence: 99%

Improved structures of stainless steel current collector increase power generation of microbial fuel cells by decreasing cathodic charge transfer impedance

Nam

Son

Kim

et al. 2018

Environmental Engineering Research

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Microbial fuel cell (MFC) is an innovative environmental and energy system that converts organic wastewater into electrical energy. For practical implementation of MFC as a wastewater treatment process, a number of limitations need to be overcome. Improving cathodic performance is one of major challenges, and introduction of a current collector can be an easy and practical solution. In this study, three types of current collectors made of stainless steel (SS) were tested in a single-chamber cubic MFC. The three current collectors had different contact areas to the cathode (P 1.0 cm 2 ; PC 4.3 cm 2 ; PM 6.5 cm 2) and increasing the contacting area enhanced the power and current generations and coulombic and energy recoveries by mainly decreasing cathodic charge transfer impedance. Application of the SS mesh to the cathode (PM) improved maximum power density, optimum current density and maximum current density by 8.8%, 3.6% and 6.7%, respectively, comparing with P of no SS mesh. The SS mesh decreased cathodic polarization resistance by up to 16%, and cathodic charge transfer impedance by up to 39%, possibly because the SS mesh enhanced electron transport and oxygen reduction reaction. However, application of the SS mesh had little effect on ohmic impedance.

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Comparative evaluation of performance and electrochemistry of microbial fuel cells with different anode structures and materials

Cited by 72 publications

References 33 publications

Comparative evaluation of fibrous artificial carbons and bamboo charcoal in terms of recovery of current from sewage wastewater

Comparative evaluation of fibrous artificial carbons and bamboo charcoal in terms of recovery of current from sewage wastewater

Reductive electrografting of in situ produced diazopyridinium cations: Tailoring the interface between carbon electrodes and electroactive bacterial films

Improved structures of stainless steel current collector increase power generation of microbial fuel cells by decreasing cathodic charge transfer impedance

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