Evaluation of microbial fuel cell coupled with aeration chamber and bio-cathode for organic matter and nitrogen removal from synthetic domestic wastewater

2009 ◽  
Vol 60 (6) ◽  
pp. 1409-1418 ◽  
Author(s):  
J. Cha ◽  
C. Kim ◽  
S. Choi ◽  
G. Lee ◽  
G. Chen ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Nitrogen Removal ◽  
Hydraulic Retention Time ◽  
Loading Rate ◽  
Removal Rate ◽  
Nitrate Removal ◽  
Domestic Wastewater ◽  
Carbon And Nitrogen

For simultaneous carbon and nitrogen removal via single stream, a microbial fuel cell (MFC) coupled with an aeration chamber and a bio-cathode was investigated. Without catalysts and any additional buffer, the MFC produced electricity continuously and the power density reached 1.3 W/m3 at a loading rate of 1.6 kg COD/m3 d. Simultaneously, the COD and the nitrate removal rate were 1.4 kg COD/m3 d and 67 g NO3-N/m3 d, respectively. When the hydraulic retention time was changed from 6 to 0.75 hours, the power density significantly increased from 0.2 to 10.8 W/m3 due to an increase of cathodic potential. When the aeration chamber was removed and the nitrate was injected into the cathode, the power density increased to 3.7 W/m3. At a high recirculation rate of 10 ml/min, the power density and the nitrate removal rate greatly increased to 34 W/m3 and 294 g NO3−-N/m3 d, respectively.

Electron Fluxes in a Microbial Fuel Cell Performing Carbon and Nitrogen Removal

2009 ◽  
Vol 43 (13) ◽  
pp. 5144-5149 ◽  
Author(s):  
Bernardino Virdis ◽  
Korneel Rabaey ◽  
Zhiguo Yuan ◽  
René A. Rozendal ◽  
Jürg Keller
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Nitrogen Removal ◽  
Carbon And Nitrogen

Simultaneous carbon and nitrogen removal using a litre-scale upflow microbial fuel cell

2013 ◽  
Vol 69 (2) ◽  
pp. 293-297 ◽  
Author(s):  
Ling-ling Zhao ◽  
Tian-shun Song
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Nitrogen Removal ◽  
Microbial Fuel Cells ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
Chicken Manure ◽  
Synthetic Wastewater ◽  
Nitrification Rate ◽  
Carbon And Nitrogen

A 10 L upflow microbial fuel cell (UMFC) was constructed for simultaneous carbon and nitrogen removal. During the 6-month operation, the UMFC constantly removed carbon and nitrogen, and then generated electricity with synthetic wastewater as substrate. At 5.0 mg L−1 dissolved oxygen, 100 Ω external resistance, and pH 6.5, the maximum power density (Pmax) and nitrification rate for the UMFC was 19.5 mW m−2 and 17.9 mg·(L d)−1, respectively. In addition, Pmax in the UMFC with chicken manure wastewater as substrate was 16 mW m−2, and a high chemical oxygen demand (COD) removal efficiency of 94.1% in the UMFC was achieved at 50 mM phosphate-buffered saline. Almost all ammonia in the cathode effluent was effectively degraded after biological denitrification in the UMFC cathode. The results can help to further develop pilot-scale microbial fuel cells for simultaneous carbon and nitrogen removal.

Simultaneous carbon and nitrogen removal from piggery wastewater using loop configuration microbial fuel cell

2013 ◽  
Vol 48 (7) ◽  
pp. 1080-1085 ◽  
Author(s):  
J.H. Ryu ◽  
H.L. Lee ◽  
Y.P. Lee ◽  
T.S. Kim ◽  
M.K. Kim ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Nitrogen Removal ◽  
Piggery Wastewater ◽  
Carbon And Nitrogen

scholarly journals A Microbial Fuel Cell Modified with Carbon Nanomaterials for Organic Removal and Denitrification

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Njud S. Alharbi
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Carbon Nanomaterials ◽  
Removal Rate ◽  
Nitrate Removal ◽  
Fish Farming ◽  
Performance Potential ◽  
Potential Health ◽  
Organic Removal ◽  
Cell Electrode

This paper investigated microbial denitrification using electrochemical sources to replace organic matter as reductant. The work also involved developing a system that could be optimised for nitrate removal in applied situations such as water processing in fish farming or drinking water, where high nitrate levels represent a potential health problem. Consequently, the study examined a range of developments for the removal of nitrate from water based on the development of electrochemical biotransformation systems for nitrate removal. This also offers considerable scope for the potential application of these systems in broader bionanotechnology based processes. Furthermore, the work discussed the context of improved microbial fuel cell (MFC) performance, potential analytic applications, and further innovations using a bionanotechnology approach to analyse cell-electrode interactions. High nitrate removal rate of more than 95% was successfully achieved by using a MFC system modified with carbon nanomaterials.

scholarly journals Electrochemical Monitoring and Microbial Characterization of a Domestic Wastewater-Fed Microbial Fuel Cell Inoculated with Anaerobic Sludge

2019 ◽  
Vol 22 (2) ◽  
Author(s):  
Felipe Vejarano ◽  
Enrique Bravo-Montaño ◽  
Neyla Benítez-Campo ◽  
Oscar A. Loaiza ◽  
William Lizcano-Valbuena
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Current Density ◽  
Microbial Fuel Cells ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Anaerobic Sludge ◽  
Rrna Gene

A dual-chambered microbial fuel cell with aqueous cathode was operated with domestic wastewater to investigate the electrogenic ability of anaerobic bacteria from a municipal wastewater treatment plant. Curves of cell potential vs. current density, power density vs. current density and current at a fixed load of 100 Ω, were obtained daily to monitor the electrochemical evolution of the system as a function of substrate use in several batch cycles. A maximum power density of 1.11 µWcm-2 was obtained after 65 days of continuous operation and a coulombic efficiency of 7% and a chemical oxygen demand removal of 76% were found in the last batch cycle. Anaerobic culture of the bacteria from the anode biofilm resulted in the isolation of two Gram-positive and two Gram-negative bacteria with divergent sugar fermentation capabilities, while analysis of 16S rRNA gene fragments showed three clones from the phyla Firmicutes, δ-Proteobacteria and α-Proteobacteria. Scanning electron imaging analysis revealed an increase in cell diversity and proliferation of methanogenic archaea when changing from synthetic to real wastewater. These results reveal the influence of substrate concentration and presence of methanogenic microorganisms on the production of power in microbial fuel cells, suggesting that future developments could be a contribution for the use of this technology to decontaminate domestic wastewater in small communities.

Membrane filtration biocathode microbial fuel cell for nitrogen removal and electricity generation

2014 ◽  
Vol 60 ◽  
pp. 56-63 ◽  
Author(s):  
Guangyi Zhang ◽  
Hanmin Zhang ◽  
Yanjie Ma ◽  
Guangen Yuan ◽  
Fenglin Yang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Nitrogen Removal ◽  
Electricity Generation ◽  
Membrane Filtration
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