Effect of nitrate on the performance of single chamber air cathode microbial fuel cells

Sukkasem, Chontisa; Xu, Shoutao; Park, Sunhwa; Boonsawang, Piyarat; Liu, Hong

doi:10.1016/j.watres.2008.08.029

Cited by 96 publications

(50 citation statements)

References 31 publications

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“…MFCs (8,14,22,25,43). There was a far greater diversity of exoelectrogens in these biofilms than was previously suspected, and the community composition to some extent depended on the inoculum (14,22).…”

Section: Vol 75 2009 Wheat Straw Biomass-powered Microbial Fuel Celmentioning

confidence: 82%

Generation of Electricity and Analysis of Microbial Communities in Wheat Straw Biomass-Powered Microbial Fuel Cells

Zhang

Min

Huang

et al. 2009

Appl Environ Microbiol

176

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Electricity generation from wheat straw hydrolysate and the microbial ecology of electricity-producing microbial communities developed in two-chamber microbial fuel cells (MFCs) were investigated. The power density reached 123 mW/m 2 with an initial hydrolysate concentration of 1,000 mg chemical oxygen demand (COD)/liter, while coulombic efficiencies ranged from 37.1 to 15.5%, corresponding to the initial hydrolysate concentrations of 250 to 2,000 mg COD/liter. The suspended bacteria found were different from the bacteria immobilized in the biofilm, and they played different roles in electricity generation from the hydrolysate. The bacteria in the biofilm were consortia with sequences similar to those of Bacteroidetes (40% of sequences), Alphaproteobacteria (20%), Bacillus (20%), Deltaproteobacteria (10%), and Gammaproteobacteria (10%), while the suspended consortia were predominately Bacillus (22.2%). The results of this study can contribute to improving understanding of and optimizing electricity generation in microbial fuel cells.

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Section: Vol 75 2009 Wheat Straw Biomass-powered Microbial Fuel Celmentioning

confidence: 82%

Generation of Electricity and Analysis of Microbial Communities in Wheat Straw Biomass-Powered Microbial Fuel Cells

Zhang

Min

Huang

et al. 2009

Appl Environ Microbiol

176

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“…Lee et al (2007) reported that facultative anaerobic Shewanella species, well known for their capability to generate electricity in MFCs, were able to utilize selenite as the sole electron acceptor for respiration in anaerobic conditions, resulting in reduction of selenite and precipitation of elemental Se nano-sized spherical particles. Denitrifying bacteria, which could play an important role in electron transfer in the MFCs (Sukkasem et al 2008), were also reported capable of reducing selenite or selenate to elemental Se (Rege et al 1999). By using these electrogens, simultaneous electricity generation and COD/Se removal can be achieved, indicating the great potential of using MFC technology for wastewater treatment.…”

Section: Selenite Removalmentioning

confidence: 99%

Removal of selenite from wastewater using microbial fuel cells

2009

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Simultaneous electricity generation and selenium removal was evaluated in single-chamber microbial fuel cells (MFCs) with acetate and glucose as carbon sources. Power output was not affected by selenite up to 125 mg l(-1) with glucose as substrate. Coulombic efficiencies of MFCs with glucose increased from 25% to 38% at 150 mg Se l(-1). About 99% of 50 and 200 mg Se l(-1) selenite was removed in 48 and 72 h for MFCs fed with acetate and glucose, respectively, demonstrating the potential of using MFC technology for Se remediation.

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“…Various types of biodegradable organic matter have been used as fuels to generate electricity in the MFC, including acetate, glucose, cellulose, and organic mixtures in the municipal wastewater [9][10][11][12]. However, different organics in the MFCs have resulted in different power outputs.…”

Section: Introductionmentioning

confidence: 99%