Effects of Electrode Materials on Electricity of Microbial Fuel Cell

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.

scholarly journals Compost Solid-phase Microbial Fuel Cell (CSMFC) Performance using Graphene and Graphite as Electrodes

2020 ◽  
Vol 17 (3) ◽  
pp. 324-333
Author(s):  
Soraya Annisa Putri ◽  
Akbar Nugroho Confera ◽  
Syafrudin Syafrudin ◽  
Bimastyaji Surya Ramadan
Keyword(s):  
Fuel Cell ◽  
Waste Management ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Organic Waste ◽  
Electrode Materials ◽  
Solid Phase ◽  
Electrochemical Measurement ◽  
Total N ◽  
Organic Waste Management

Organic waste is a type of waste produced by many sector, which need to managed appropriately. During its development, composting is one of the organic waste management efforts that is often be applied, Another alternative organic waste management in the form of Microbial Fuel Cell (MFC) has emerged. Several researchers conducted studies on MFC performance which was influenced by many factors, especially the electrode which contributes to the electron transfer process. This study has a concern about energy optimization through CSMFC technology using different electrode’s material. Electrode materials from Graphene and Graphit has good electro-conductivity and has a large surface area, making it suitable for bacteria to adhere. The sampled reactors are consists of two types of electrodes  in the form of graphite and graphene. Each materials has anode and cathode ratio of 1:1, 2:1, and 3:1. The samples measured into three kinds, which called a mature compost measurement, electrochemical measurement, and biochemical measurement. Some collected sampling data were then processed and analyzed statistically using SPSS software. The processed and analyzed data included the calculation of power density, total N, C/N ratio, and moisture content. Any data like voltage (V) and electric current (I) are needed to obtain a power density. The highest average voltage, current, power and power density are produced by the N3 reactor (graphene 3:1) that is 269 x 10-3 V, 163 x 10-6 A, 56 x 10-6 Watt and 1.914 x 10-3 W / m2. There is no significant effect of variations in the type of electrode (graphite and graphene) on CSMFC performances.

Metallophthalocyanine/carbon nanotube hybrids: extending applications to microbial fuel cells

2012 ◽  
Vol 16 (07n08) ◽  
pp. 917-926 ◽  
Author(s):  
Sean L. Edwards ◽  
Ronen Fogel ◽  
Kudzai Mtambanengwe ◽  
Chamunorwa Togo ◽  
Richard Laubscher ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Microbial Fuel Cells ◽  
Surface Modifications ◽  
Carbon Paper ◽  
Current Response ◽  
Anode Chamber ◽  
Signal Loss

Pioneering work by Nyokong and others have highlighted the potential benefits for improved electron transfer processes and catalysis of hybrid configurations of metallophthalocyanines with carbon nanotubes. Here we examine the practical application of such hybrid configurations in an Enterobacter cloacae microbial fuel cell. Electrochemical investigations at glassy carbon electrodes (GCEs) showed that FePc and FePc :multiwalled carbon nanotube (MWCNT) hybrid surface modifications display significant oxygen reduction reaction electrocatalytic properties compared to either MWCNT-modified or bare GCE surfaces throughout acidic- to moderately-alkaline pHs. Significant stabilization of the current response at FePc :MWCNT surfaces are notable throughout the pH range, compared to GCE surfaces modified with FePc alone. Corresponding results were obtained for surface modifications of bare carbon paper (BCP) cathodes in a microbial fuel cell where power density increases were observed in the order: Pt > FePc :MWCNT > FePc > MWCNT > BCP. A synergistic combination of simple treatments such as increased ionic strength (300 mM NaCl ), temperature (35 °C), and agitation of the anode chamber in this MFC configuration increased the power density to 2.5 times greater than that achieved at platinised cathode configurations under non-optimised conditions, achieving peak power densities of 212 mW.m-2. The long-term stability of the MFC was assessed over 55 days. Surprisingly, the majority of signal loss over extended MFC operation was attributed, in this study, to fouling of the Nafion® PEM membrane rather than either leaching/fouling of the catalysts from the electrodes or nutrient depletion in the anode over the time periods examined.

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.

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

2020 ◽  
Vol 44 (7) ◽  
pp. 5968-5976 ◽  
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

Fast Design and Manufactured on Complex Flow Channel by Rapid Prototyping for Air-Breathing Polymer Electrolyte Membrane Fuel Cells

2006 ◽  
Author(s):  
Wei-Hsiang Lai ◽  
Cheng Yu Chen ◽  
Ming-Chang Chou
Keyword(s):  
Fuel Cell ◽  
Rapid Prototyping ◽  
Power Density ◽  
Structure Design ◽  
Carbon Paper ◽  
Complex Flow ◽  
Air Breathing ◽  
Prototype Development ◽  
Assembly Method ◽  
Serial Connection

The miniature and air-breathing fuel cell has become the globally major design concepts of fuel cell development recently. In this paper, the authors used 3-D drafting software for fast design and utilize rapid prototyping (RP) technology to accelerate the prototype development of new stack designs and optimize the assembly method. A fast design and convenient manufacture tool, i.e., rapid prototyping, has been first successfully applied to the fabrication of the complicated flow channels of both DMFC and PEMFC in this paper. The honeycomb shape methanol reservoir and honeycomb cathode structure design of DMFC and a complex flow distributor design of mono-polar PEMFC stack, which are almost impossibly manufactured by traditional CNC manufacturing, is fabricated by rapid prototyping technology and illustrated for the extraordinary advantages of RP technology. This paper shows that the fast design and manufacture characteristics are more important for the feasibility study of a complicated structure and any new design ideas. Although the performance of air-breathing pseudo-polar DMFC is only 2.16 mW/cm2 in peak power density by using 50% of hydrophobic carbon paper; this poor performance is resort to the MEA of DMFC is not well prepared. The other example of the power density of 188 mW/cm2 (at 0.425 V) in parallel-connection and 123mW/cm2 (at 4.25V) in serial-connection for the air-breathing mono-polar PEMFC stack are achieved. The performance of the stack is close to the state-of-the-art comparing to recently published literatures [6–9].

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

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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