Improving electron transport efficiency and power density by continuous carbon fibers as anode in the microbial fuel cell

In order to study the effect of nitrite and nitrate on the performance of microbial fuel cell, a system combining an anaerobic fluidized bed (AFB) and a microbial fuel cell (MFC) was employed for high-strength nitrogen-containing synthetic wastewater treatment. Before this study, the AFB-MFC had been used to treat high-strength organic wastewater for about one year in a continuous flow mode. The results showed that when the concentrations of nitrite nitrogen and nitrate nitrogen were increased from 1700 mg/L to 4045 mg/L and 545 mg/L to 1427 mg/L, respectively, the nitrite nitrogen and nitrate nitrogen removal efficiencies were both above 99%; the COD removal efficiency went up from 60.00% to 88.95%; the voltage was about 375 ± 15 mV while the power density was at 70 ± 5 mW/m2. However, when the concentrations of nitrite nitrogen and nitrate nitrogen were above 4045 mg/L and 1427 mg/L, respectively, the removal of nitrite nitrogen, nitrate nitrogen, COD, voltage, and power density were decreased to be 86%, 88%, 77%, 180 mV, and 17 mW/m2 when nitrite nitrogen and nitrate nitrogen were increased to 4265 mg/L and 1661 mg/L. In addition, the composition of biogas generated in the anode chamber was analyzed by a gas chromatograph. Nitrogen gas, methane, and carbon dioxide were obtained. The results indicated that denitrification happened in anode chamber.

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Characterization of Generated Voltage, Current, Power and Power Density from Cow Dung Using Double Chambered Microbial Fuel Cell

Journal of Physical Chemistry & Biophysics ◽

10.4172/2161-0398.1000208 ◽

2016 ◽

Vol 6 (2) ◽

Cited By ~ 4

Author(s):

Anand Parkash

Keyword(s):

Fuel Cell ◽

Microbial Fuel Cell ◽

Power Density ◽

Cow Dung

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Polarization and power density trends of a soil‐based microbial fuel cell treated with human urine

International Journal of Energy Research ◽

10.1002/er.5391 ◽

2020 ◽

Vol 44 (7) ◽

pp. 5968-5976 ◽

Cited By ~ 1

Author(s):

Meshack I. Simeon ◽

Felix U. Asoiro ◽

Mohamad Aliyu ◽

Olayinka A. Raji ◽

Ruth Freitag

Keyword(s):

Fuel Cell ◽

Microbial Fuel Cell ◽

Power Density ◽

Human Urine

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Effects of Electrode Materials on Electricity of Microbial Fuel Cell

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.183-185.1549 ◽

2011 ◽

Vol 183-185 ◽

pp. 1549-1552

Author(s):

Yong Juan Zhang ◽

Zhang Min ◽

Zheng Yang ◽

Jing Yi Xie ◽

Yong Feng Li

Keyword(s):

Fuel Cell ◽

Activated Sludge ◽

Microbial Fuel Cell ◽

Power Density ◽

Electrode Material ◽

Output Voltage ◽

Electrode Materials ◽

General Trend ◽

Important Influence ◽

Carbon Paper

The electrode material has the very important influence to the microbial fuel cell. The different electrode materials were studied for producing the electricity performance to MFC by the activated sludge as the substrate. The results indicated that the anode of graphite pole was 0.63 mW/cm2 of the area power density. The carbon paper was 60 (0.50mW/cm2). Carbon paper 90 was 0.23mW/cm2. Although having the biggest area power density, the general trend of the graphite pole is much lower than others and production of the electricity was not good. Even though the maximum of area power density of graphite pole, it might be the reason for increasing nutritive compound and elevation of temperature. The carbon paper 90 produce the area power density is the steadiest among three poles and its output voltage is a quite stable and low. MFC is excellent under carbon paper 90. The area power density had strong fluctuating scope, the power density is big and the overall value is high under carbon paper 60.

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Influence of Aluminum Mesh electrode on Performance of a Microbial Fuel Cell (MFC)

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i3.36.29207 ◽

2018 ◽

Vol 7 (3.36) ◽

pp. 176

Author(s):

M. I. N. Ma’arof ◽

Girma T. Chala ◽

Saravanan A/l Ravichanthiran ◽

. .

Keyword(s):

Fuel Cell ◽

Microbial Fuel Cell ◽

Power Density ◽

Oxygen Supply ◽

Fossil Fuel ◽

Graphite Electrode ◽

Negative Impact ◽

Bacterial Activity ◽

Rectangular Shape ◽

Aluminum Mesh

Recently, various steps have been taken to utilize and develop renewable and sustainable form of energies due to the negative impact and dire limitation over continuous dependency on fossil fuel. This paper presents the effects of aluminium mesh on the performance of a MFC. Aluminium mesh with rectangular shape was used as the electrode and experiments were conducted with respect to various types of resistors. The amount of voltages and power density generated were determined. It was found that the increase in bacterial activities resulted in the increment of oxygen supply, therefore, the voltage generated also increased. In addition, the longevity of bacterial activity is dependent on the amount of catalyst. Moreover, it was observed that the performance of aluminium mesh electrode was smaller than that of graphite electrode.

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A high power density miniaturized microbial fuel cell having carbon nanotube anodes

Journal of Power Sources ◽

10.1016/j.jpowsour.2014.09.165 ◽

2015 ◽

Vol 273 ◽

pp. 823-830 ◽

Cited By ~ 72

Author(s):

Hao Ren ◽

Soonjae Pyo ◽

Jae-Ik Lee ◽

Tae-Jin Park ◽

Forrest S. Gittleson ◽

...

Keyword(s):

Carbon Nanotube ◽

Fuel Cell ◽

Microbial Fuel Cell ◽

Power Density ◽

High Power ◽

High Power Density

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The Influence of Mediator Concentration on the Performance of Microbial Fuel Cell

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.1520 ◽

2012 ◽

Vol 512-515 ◽

pp. 1520-1524 ◽

Cited By ~ 1

Author(s):

Yu Zhao ◽

Xiao Bin Wang ◽

Peng Li ◽

Yan Ping Sun

Keyword(s):

Methylene Blue ◽

Fuel Cell ◽

Microbial Fuel Cell ◽

Power Density ◽

Peak Power ◽

Electrochemical Impedance ◽

Peak Power Output ◽

Anode Potential ◽

High Concentration ◽

Peak Power Density

Electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), power density and anode potential are used to characterize the mediator microbial fuel cell at different methylene blue (MB) concentrations. At lower MB concentration between 9.98×10-3 mmol/L and 1.66×10-1 mmol/L, the increased power density is enabled by using high mediator concentrations. Higher peak power density of 159.6 mw/m2 is observed compared with the peak power density of 36.0 mw/m2. But MB at too high concentration is disadvantageous to the perform of MFC. At the MB concentration of 2.50×10-1 mmol/L, the peak power output is just 128.4 mw/m2, which is lower than 159.6 mw/m2 at MB concentration of 1.66×10-1 mmol/L.

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