Recent advances in the development and utilization of modern anode materials for high performance microbial fuel cells

Sonawane, Jayesh M.; Yadav, Abhishek; Ghosh, Prakash C.; Adeloju, Samuel B O

doi:10.1016/j.bios.2016.10.014

Cited by 277 publications

(135 citation statements)

References 77 publications

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“…Also, the OsRP is a positively charged redox polymer that facilitates more stable contact with negatively charged bacterial surface structures with the help of strong electrostatic interactions ,. Surface modification of the bioanodes with nanomaterials or mediating and charged polymers like OsRP provides a good adhesion environment and facilitates electron transfer from the bacterial cells to the electrode surface …”

Section: Resultsmentioning

confidence: 99%

Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT‐Au‐Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells

et al. 2017

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In this work, a carbon felt electrode (CFE) was modified with a multiwalled carbon nanotube‐gold‐platinum (MWCNT−Au‐Pt) hybrid nanomaterial and integrated with an osmium redox polymer (OsRP, [Os(2, 2’‐bipyridine)2(poly‐vinylimidazole)10Cl]Cl) and Gluconobacter oxydans DSM 2343 (G. oxydans) cells. The developed electrode was used as the bioanode in a 5.0 mM K3Fe(CN)6 mediator containing phosphate buffer (pH 6.5) anolyte and combined with a Pt wire cathode in phosphoric acid medium (pH 3.5). As a result, a two chamber microbial fuel cell (MFC) was formed, in which an activated Nafion membrane was used as a proton exchange membrane. The OsRP/G.oxydans/MWCNT−Au‐Pt/CFE based bioanode was electrochemically examined in differently deoxygenated bioanode chambers and additionally the amounts of hybrid nanomaterial and OsRP were optimized. In terms of MFC characteristics, it was found that an anaerobic OsRP/G.oxydans/MWCNT−Au‐Pt/CFE bioanode based MFC had a maximum power density of 32.1 mW m−2 (at 90 mV), a maximum current density of 1032 mA m−2 and a charge transfer efficiency (E%) value of 22.30 (open circuit potential 180 mV).

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Section: Resultsmentioning

confidence: 99%

Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT‐Au‐Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells

et al. 2017

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“…As the major limitation in converting cellulose to electricity is decomposition of this polysaccharide, attention needs to be focused on optimizing cellulose degradation and fermentation to the products that could be oxidized by exoelectrogens [66]. This will be the first step towards improving power generation, which will make it possible to scale-up cellulose-fed MFCs also by refining reactor materials and design [67,68]. Extremely important issue is the optimization of conditions for cellulolytic and electrogenic microorganisms.…”

Section: Discussionmentioning

confidence: 99%

Evolving Microbial Communities in Cellulose-Fed Microbial Fuel Cell

et al. 2018

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Abstract:The abundance of cellulosic wastes make them attractive source of energy for producing electricity in microbial fuel cells (MFCs). However, electricity production from cellulose requires obligate anaerobes that can degrade cellulose and transfer electrons to the electrode (exoelectrogens), and thus most previous MFC studies have been conducted using two-chamber systems to avoid oxygen contamination of the anode. Single-chamber, air-cathode MFCs typically produce higher power densities than aqueous catholyte MFCs and avoid energy input for the cathodic reaction. To better understand the bacterial communities that evolve in single-chamber air-cathode MFCs fed cellulose, we examined the changes in the bacterial consortium in an MFC fed cellulose over time. The most predominant bacteria shown to be capable electron generation was Firmicutes, with the fermenters decomposing cellulose Bacteroidetes. The main genera developed after extended operation of the cellulose-fed MFC were cellulolytic strains, fermenters and electrogens that included: Parabacteroides, Proteiniphilum, Catonella and Clostridium. These results demonstrate that different communities evolve in air-cathode MFCs fed cellulose than the previous two-chamber reactors.

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“…In literature there are several efforts to scale up MFCs; Table 3 shows a summary of the most significant attempts. There is a tendency to use carbonaceous material for the scale-up prototypes, because these materials are cheaper, with a big surface area that maintains a large ratio of electrode surface against reactor volume and is compatible with the exoelectrogens bacterial growth in the anode making a good cost-effective option especially with GAC (used in this study as well) [15,16]. Likewise, it can be concluded that MFCs with packed electrodes (GAC) generally show higher COD removal rates and achieve higher power density [22].…”

Section: Scaling Up a Microbial Fuel Cell (Mfc) Systemmentioning

confidence: 99%

“…MFCs offer unique advantages over traditional wastewater treatment processes, such as low carbon footprint, electricity generation, reduced sludge production, and simple operation and tend to use carbonaceous materials that are cheaper [15,16]. MFCs are a promising technology that can change the way we treat wastewater, especially in developing nations where improvements in traditional wastewater technologies give room to significant savings in operation, particularly if MFCs are used to transform the treatment plant into a "net energy producer".…”

Section: Introductionmentioning

confidence: 99%

Scale up of Microbial Fuel Cell Stack System for Residential Wastewater Treatment in Continuous Mode Operation

Linares¹,

Domínguez‐Maldonado

Rodríguez-Leal³

et al. 2019

Water

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The most important operational expense during wastewater treatment is electricity for pumping and aeration. Therefore, this work evaluated operational parameters and contaminant removal efficiency of a microbial fuel cell stack system (MFCSS) that uses no electricity. This system consists of (i) septic tank primary treatment, (ii) chamber for secondary treatment containing 18 MFCs, coupled to an energy-harvesting circuit (EHC) that stores the electrons produced by anaerobic respiration, and (iii) gravity-driven disinfection (sodium hypochlorite 5%). The MFCSS operated during 60 days (after stabilization period) and it was gravity-fed with real domestic wastewater from a house (5 inhabitants). The flow rate was 600 ± 100 L·d −1 . The chemical oxygen demand, biological oxygen demand, total nitrogen and total phosphorous were measured in effluent, with values of 100 ± 10; 12 ± 2; 9.6 ± 0.5 and 4 ± 0.2 mg·L −1 , and removal values of 86%, 87%, 84% and 64%, respectively. Likewise, an EHC (ultra-low energy consumption) was built with 6.3 V UCC ® 4700 µF capacitors that harvested and stored energy from MFCs in parallel. Energy management was programmed on a microcontroller Atmega 328PB ® . The water quality of the treated effluent complied with the maximum levels set by the Mexican Official Standard NOM-001-SEMARNAT-1996-C. A cost analysis showed that MFCSS could be competitive as a sustainable and energy-efficient technology for real domestic wastewater treatment.

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Recent advances in the development and utilization of modern anode materials for high performance microbial fuel cells

Cited by 277 publications

References 77 publications

Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT‐Au‐Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells

Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT‐Au‐Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells

Evolving Microbial Communities in Cellulose-Fed Microbial Fuel Cell

Scale up of Microbial Fuel Cell Stack System for Residential Wastewater Treatment in Continuous Mode Operation

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