LOGO

Green energy technology

Microbial Fuel CellsPresented by:Van Thi Hoe (文氏槐 ) Pham Thi Thu Huyen (范氏秋玄 ) Rijal (里僑爾 ) Aripriharta (安培興 )

1102529104110252910111033051561103405122

Advantages and disadvantages

Contents

Introduction1

Types of Microbial fuel cells

2

Working Principle

3 Applications

4

5

Conclusion6

• A microbial fuel cell (MFC) are fuel cell which is use bacteria as the catalysts to oxidize organic and inorganic matter and generate electricity.

What is microbial fuel cell (MFC)?

Introduction

Waste or Organic Matter

Energy

What is microbial fuel cell (MFC)?

“ MFCs are bioelectrical devices that harness the natural metabolisms of microbes to produce electrical power directly from organic material. ”

Principle

Why we eat food ?

To produce energy , gain vitamin , protein etc. This is our metabolism

Microbes exactly do the same, they eat organic material then produce energy for themselves.

This is the metabolism of microbe.

But some of microbes (bacteria) liberate electrons during their metabolic activity.

• Can be used to solve Environmental Problems

• Cheap Material• Wastewater treatment & power generation

at a same time.• Good alternative to Conventional Power

Generation Systems.

• Wider variety of applications over

conventional fuel cells.

Advantages

Advantages and disadvantages

Advantages and disadvantages

Disadvantages

• Small power generate.

• Still not economically competitive.

• Power produced way below when compared with conventional cells.

Portable units power generation Renewable and sustainable

source of electricity.Treatment of Wastewater & solid wastes

Applications

Robotics - Studies in Gastro bots:Autonomous robots powered by MFC’s

could consume food (biomass) as seemingly limitless source of energy

Powering electronic monitoring devices in remote locations,

such as the bottom of the oceanBiosensor

Microbial Fuel Cell

Energy

Glucose(Organic material)

Fuel cell

Working Principle

Basic Design

Oxygen Poor

Oxygen Rich

Anodic Reaction (Oxidation) EX-1 : CH3COO - + 2H2O 2CO2 + 7H+ + 8e-

(Acetic acid ion)

EX-2 : C6H12O6 + 6H2O 6CO2 + 24H+ + 24e-

(glucose)

Cathodic Reaction (Reduction) EX-1 : O2 + 4H+ + 4e- 2H2O

EX-2 : 6O2 + 24H+ + 24e- 12H2O

Redox Reactions invovled

Mediator MFC

Types of Microbial fuel cells

Mediator-Free MFC

A simple example microbial fuel cell

A soil based microbial fuel cell

Conclusion

• Microbial Fuel Cells (MFCs) use bacteria to convert organic waste material into electrical energy.

• The many applications of MFCs will help to reduce the use of fossil fuels.

• Widespread use of MFCs in these areas can take our waste products and transform them into energy

LOGO