Effect of Electrode Shape on Power and Internal Resistance in Benthic Microbial Fuel Cell Material on Marine Sediment

2009 ◽  
Vol 79-82 ◽  
pp. 2195-2198 ◽  
Author(s):  
Jian Hai Li ◽  
Yu Bin Fu ◽  
Jia Liu ◽  
An Long Li ◽  
Dong Dong Ma
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Internal Resistance ◽  
Internal Diameter ◽  
Test Results ◽  
Electrode Structure ◽  
Graphite Electrodes ◽  
Electrode Shape ◽  
Higher Power

As the electrode structure has a great effect on the performance of the benthic microbial fuel cell (BMFC), several graphite electrodes with different shapes (column, plane disk and tubular shape for example) are designed in this paper. The maximum power density (Pm) of BMFC-c and BMFC-d are 20.2 mW•m-2 and 14.9 mW•m-2 respectively, and the internal resistances are 333 Ω and 598 Ω respectively. Three cells are composed of three different sizes of graphite tubes, and their internal diameter of these electrodes are 2.5 cm (called it as BMFC-I for short); 1.0 cm (BMFC-II) and 0 cm (column shape for comparison, BMFC-III) respectively. Test results show that the Pm of BMFC-I, BMFC-II and BMFC-III are 13, 11 and 16 mW•m-2 respectively, and their internal resistances are 435 Ω, 488 Ω and 419 Ω respectively. Results show that the column structure electrode has a lower internal resistance and a higher power density than the disk and tubular structure electrode.

Microbial fuel cell of Enterobacter cloacae: Effect of anodic pH microenvironment on current, power density, internal resistance and electrochemical losses

2011 ◽  
Vol 36 (17) ◽  
pp. 11093-11101 ◽  
Author(s):  
Vanita Roshan Nimje ◽  
Chien-Yen Chen ◽  
Chien-Cheng Chen ◽  
Ji-Yi Tsai ◽  
Hau-Ren Chen ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Enterobacter Cloacae ◽  
Internal Resistance

Three-dimensional, highly porous N-doped carbon foam as microorganism propitious, efficient anode for high performance microbial fuel cell

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 25799-25807 ◽  
Author(s):  
Thi Hiep Han ◽  
Sandesh Y. Sawant ◽  
Sun-Jin Hwang ◽  
Moo Hwan Cho
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
High Performance ◽  
Three Dimensional ◽  
Carbon Foam ◽  
Graphite Felt ◽  
Higher Power ◽  
Highly Porous

Microbial fuel cell based on as-prepared N-doped carbon foam produced 2 times higher power density than the commercial graphite felt.

Effects of evolving quality of landfill leachate on microbial fuel cell performance

2017 ◽  
Vol 36 (1) ◽  
pp. 59-67 ◽  
Author(s):  
Simeng Li ◽  
Gang Chen
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Landfill Leachate ◽  
Internal Resistance ◽  
Energy Yield ◽  
Leachate Treatment ◽  
Fuel Cell Performance ◽  
Leachate Quality

Microbial fuel cell (MFC) is a novel technology for landfill leachate treatment with simultaneous electric power generation. In recent years, more and more modern landfills are operating as bioreactors to shorten the time required for landfill stabilization and improve the leachate quality. For landfills to operate as biofilters, leachate is recirculated back to the landfill, during which time the organics of the leachate can be decomposed. Continuous recirculation typically results in evolving leachate quality, which chronologically corresponds to evolution stages such as hydrolysis, acidogenesis, acetogenesis, methanogenesis, and maturation. In this research, variable power generation (160 to 230 mW m˗2) by MFC was observed when leachate of various evolutionary stages was used as the feed. The power density followed a Monod-type kinetic model with the chemical oxygen demand (COD) equivalent of the volatile fatty acids (VFAs) ( p < 0.001). The coulombic efficiency decreased from 20% to 14% as the leachate evolved towards maturation. The maximum power density linearly decreased with the increase of internal resistance, resulting from the change of the conductivity of the solution. The decreased conductivity boosted the internal resistance and consequently limited the power generation. COD removal as high as 90% could be achieved with leachate extracted from appropriate evolutionary stages, with a maximum energy yield of 0.9 kWh m˗3 of leachate. This study demonstrated the importance of the evolving leachate quality in different evolutionary stages for the performance of leachate-fed MFCs. The leachate extracted from acidogenesis and acetogenesis were optimal for both COD reduction and energy production in MFCs.

Three-dimensional hierarchical MoO2/MoC@NC-CC free-standing anode applied in microbial fuel cells

2022 ◽  
Author(s):  
Da Liu ◽  
Wen-Kai Fang ◽  
Jiangtao Li ◽  
Liling Zhang ◽  
Mei Yan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Electrocatalytic Activity ◽  
Microbial Fuel Cells ◽  
Three Dimensional ◽  
Free Standing ◽  
Higher Power

In general, more exoelectrogens’ enrichment implies higher power density. However, due to the low electrocatalytic activity of the anode, it limits the performance of microbial fuel cell. Here, based on...

Electricity Production from Dual Chambers Microbial Fuel Cell Fed with Chicken Manure-Wastewater

2015 ◽  
Vol 3 (1) ◽  
pp. 9-18
Author(s):  
Ali J. Jaeel
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Chicken Manure ◽  
Electricity Production ◽  
Anaerobic Sludge ◽  
Livestock Wastewater ◽  
Graphite Electrodes ◽  
Reliable Source ◽  
Current Densities ◽  
Resistance Value

Chicken manure wastewaters are increasingly being considered a valuable resource of organic compounds. Screened chicken manure was evaluated as a representative solid organic waste. In this study, electricity generation from livestock wastewater (chicken manure) was investigated in a continuous mediator-less horizontal flow microbial fuel cell with graphite electrodes and a selective type of membrane separating the anodic and cathodic compartments of MFC from each other. The performance of MFC was evaluated to livestock wastewater using aged anaerobic sludge. Results revealed that COD and BOD removal efficiencies were up to 88% and 82%, respectively. At an external resistance value of 150 Ω, a maximum power and current densities of 278 m.W/m2 and 683 mA/m2, respectively were obtained, hence MFC utilizing livestock wastewater would be a sustainable and reliable source of bio-energy generation .

Effects of type of inoculum and architectural changes on internal resistance of a microbial fuel cell

2010 ◽  
Vol 150 ◽  
pp. 24-24
Author(s):  
A.L. Vázquez-Larios ◽  
F. Esparza-García ◽  
G. Vázquez-Huerta ◽  
O. Solorza-Feria ◽  
H.M. Poggi-Varaldo
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Internal Resistance

scholarly journals Effect of Nitrite and Nitrate Concentrations on the Performance of AFB-MFC Enriched with High-Strength Synthetic Wastewater

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Jian-sheng Huang ◽  
Ping Yang ◽  
Chong-ming Li ◽  
Yong Guo ◽  
Bo Lai ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Nitrate Nitrogen ◽  
High Strength ◽  
Synthetic Wastewater ◽  
Flow Mode ◽  
Anode Chamber ◽  
Nitrite Nitrogen ◽  
One Year

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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