Microbial Fuel Cells Seminar report, abstract

Microbial Fuel Cells an introduction

It is a device which converts chemical energy into electrical energy. It is achieved by catalytic reaction of microorganisms. It is also called biological fuel cells. A current is produced by the interaction of bacteria. Generally, the fuel cell consists of cathode and anode. These two are separated by a membrane which is positively charged called cations.

Different operations take place in both the compartment. Microorganisms oxidize the fuel in order to generate carbon dioxide along with protons and electrons in the anode compartment. These electrons and protons are too transferred to cathode compartment. An external electric circuit is required to transfer the electrons. The membrane is required in order to transfer the protons.

Protons and electrons in the cathode compartment mix with oxygen to produce water. In general, there are two microbial fuel cells. They are mediators and mediator less microbial fuel cells. In mediator microbial fuel cells, a mediator is needed to regulate the transfer of electrons to the electrode. Mediators used can be methyl blue, neutral red or any other. In mediator less microbial fuel cell, there is no use of a mediator. They have bacteria which are electrochemically active to transfer electrons. Some of the electrochemically active bacteria are Aeromonas hydrophila and many others.

We prepared and published this seminar abstract for final year engineering students seminar research. You should do your own research additional to this information before presenting your seminar.
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