Biogas generator is a facility which produces biogas that can be later used for heating, cooking or making electricity. Biogas is mostly made of methane but also other gases and is produced by microorganisms also known as bacteria when they decompose other organic material. It is completely clean and renewable energy source and can be easily produced and used.
What is the concept?
Just like other organisms, bacteria or microorganisms have to eat too and while animals mostly produce manure the bacteria produce gases which burn and produce heat. When the concentration of these gases is high enough you can burn it and it will make a flame that can be used for something useful.
The biogas has been used for a few hundred years, even before electricity way invented. Gases from sewers were captures and used for public lighting or other uses. Another great thing about biogas is that it is completely safe to produce and there are no dangers involved. It has no effect on health if inhaled and emits no radiation.
But just like with any other fuel, wood or other gases you have to take certain precautions to use it safely. Just like you can burn down a house with wood accidents can happen with biogas. This is why biogas generators are usually built away from other buildings, not to mention it can be quite smelly, depending on what kind of organic material you use.
The best fuel for biogas generator is organic, vegetable, kitchen waste or animal manure. If built properly the generator won’t leak the bad smell that is created in the process of decomposition. Dead animals are not good for use as a fuel as they smell very badly and can attract wild predators.
Where is biogas created?
Biogas is created in a part called digester where we put organic, decomposing material to get processed by microorganisms while catching the produced biogas. We are using bacteria and their ability to produce biogas for our own benefit by ensuring good environment for their growth and procreation. This is why a constant flow of new organic material is needed if we want more biogas for our purposes. Once the organic material has been fully processed by the bacteria we can use it as a natural fertilizer, thus making more space in the digester for new biogas production.
Does biogas have bad smell?
No, contrary to popular belief biogas has no odor and no color and cannot be seen or sensed in natural environment unless you concentrate it and burn it. It mainly consists of CH4 and CO2.
Are there any disadvantages to biogas generator?
The one disadvantage is that it cannot be moved around and needs quite a lot of space to function properly.y if you are living in an urban environment with little space then you will only be able to build a small one with a lower capacity. Because the bacteria need quite a lot of organic material to produce a sizable biogas volume you need to make it quite big, thus needing space.
Another problem can be getting the organic material, if you are not living in a rural environment and don’t have animals then you’ll have a hard time coming up with all the possible “feed” for the bacteria, like animal manure, kitchen waste or cut grass etc. in case you do have animals this is a great solution how you can use animal manure for other purposes and not just for fertilizer.