Carbon dioxide is found almost everywhere around us. It is a chemical compound that does not burn, stops the combustion process and makes breathing impossible. However, in small quantities it is always present in the environment without causing any harm. Consider what types of carbon dioxide are based on its content and the mode of origin.
What is carbon dioxide?
This gas is part of the Earth’s natural atmosphere. It belongs to the category of greenhouse, that is, it helps to retain heat at the surface of the planet. It has neither color nor smell, which is why it is difficult to feel excessive concentration in time. Meanwhile, in the presence of 10% or more carbon dioxide in the air, breathing difficulties begin, up to a fatal outcome.
However, carbon dioxide is widely used in industry. For example, it is used to make soda, sugar, beer, soda and other food products. An interesting application is the creation of "dry ice". So called carbon dioxide, cooled to a very low temperature. In this case, it goes into a solid state, so that it can be compressed into briquettes. “Dry ice” is used to quickly cool food.
Where does carbon dioxide come from?
This type of gas is actively formed as a result of chemical processes in the thickness of the Earth. It is able to exit through cracks and faults in the earth's crust, which is a great danger for workers in mines of the mining industry. As a rule, carbon dioxide is almost always present in increased amounts in mine air.
In some types of mining, for example, in coal and potash deposits, gas is able to accumulate at high speed. Increased concentration leads to a deterioration in well-being and asphyxiation, so the maximum value should not exceed 1% of the total air volume in the mine.
Industry and transport
One of the largest sources of carbon dioxide production are various plants. Industrial enterprises in the course of technological processes produce it in huge quantities, throwing it into the atmosphere. Transport has the same effect. The rich composition of exhaust gases also contains carbon dioxide. At the same time, a large share of its emissions into the atmosphere of the planet is made by aircraft. In second place is ground transportation. The greatest concentration is created over large cities, which are characterized not only by a large number of cars, but also by prolonged traffic jams.
Almost all living things on the planet, when exhaled, emit carbon dioxide. It is formed as a result of chemical metabolic processes in the lungs and tissues. This amount on a global scale, even with billions of creatures, is very small. However, there are circumstances when it is necessary to remember the release of carbon dioxide with respiration.
First of all, these are enclosed spaces, rooms, classrooms, elevators, etc. With the accumulation of a sufficient number of people in a limited area, suffocation quickly enough occurs. It is a lack of oxygen due to the fact that it is replaced by exhaled carbon dioxide, which is unsuitable for breathing. To avoid this, it is necessary to carry out natural or forced ventilation, in order to introduce new air into the room from the street. Ventilation of rooms can be done using conventional vents, as well as complex systems with a duct system and injection turbines.