Paper batteries and dirty water as a new source of energy

A new energy source

It is time for mankind to admit that it has unintentionally plagued the planet. And therefore, willy-nilly, we will have to master “microbial fuel cells.” Devices in which the result of the life of bacteria is converted into electrical energy. And in passing, albeit with a grief in half, there is a sewage treatment .

At the University of Binghamton, the technology of freeze-drying of bacterial mass is studied to achieve a guaranteed revitalization of microorganisms after the start-up of the reverse process. This is necessary to ensure that the fuel cells remain inactive, do not wear out in vain, and are activated only at the right time. And then you can bring a container with dry “electric bacteria” anywhere, fill them with dirty water and get a ready low-power generator of energy.

The liquid should be exactly dirty, and it is best to scoop directly out of the toilet before the flush button is pressed. Bacteria break down the organics from the water to eat, and the oxidation processes that take place affect the arrangement of the electrons – this creates an electric current. In the course of the experiment, scientists received an indicator of several microwatts per square centimeter of the battery area, which is enough to make the LED work.

To store the bacterial mass a cellulose trap is used, in simplified form it looks like a rough paper sheet that needs to be soaked in dirty water. Or pee on it, put it in a puddle, leave lying on the ground in the rain – from a practical point of view, it’s very easy to use such fuel cells. Yes, the efficiency is not great, but it is an interesting way of extracting electricity from “nothing”, moreover, straight from the mud. The technology has great potential for use in disaster areas .

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