Mediator vs. Mediator-less Microbial Fuel Cell
A microbial fuel cell is basically a type of a bio electrochemical system. This system is driven by a type of a current that will imitate a type of a bacterial interaction that is only found in nature. There are several differences between a mediator less and a microbial fuel cell. It is important that you are able to see where the two differ in each way as well as see where they are alike. This can help to give you a better understanding of what a microbial fuel cell is in general. The more that you understand about them, the easier it will be to learn about the general meaning.
The Korea Institute of Science and Technology has been engineering this particular type of fuel cells. A mediator is not needed to transfer electrons with mediator-less microbial fuel cells. There is an active bacterium that is electrochemically transferred to from the electrons into the electrode. These specific electrons are actually carried directly to the electrode from the enzyme in the bacterial respiratory.
Some bacteria will have an external type of a membrane; they will transfer each of their electrons through a production that is done through the pili. These types of fuel cells are usually run on wastewater so that they will be able to obtain energy that they can get directly from specific aquatic plants. These specific types of fuel cells are known as plant microbial fuel cells. The power that is obtained from these living plants is a variant that will be able to give off additional ecological advantages.
Microbial Fuel Cells
There are several different types of microbial cells that are not active. There is a type of an electron transfer that goes from microbial cells straight into the electrode. These will be made possible by different types of mediators. These different types of mediators include methyl blude, methyl viologen, thionine, humic acid, as well as neutral red just to name a few. It is rare to be able to find one of these types of mediators that are not toxic or expensive.
There are several different uses that you will be able to get out of these types of fuel cells. One of the most important is power sources that are electricity produced and harvested. Just about any type of organic material will be able to be fed through the fuel cell virtually. What this means is that bacteria will be able to be consumed from water through a waste material. This will in turn make a supplementary power for your plant. Another type of use is made in direct proportion to the waste water strength that is used as fuel. You will be able to use an MFC to measure the actual strength of wastewater. Typically, the biochemical oxygen demand value is based solely on the strength of the waste water. The biochemical oxygen demand values will be determined on samplers that are incubating for up to 5 days as long as they have the appropriate source of microbes.