Next, we are going to review the latest research in this regard and the 10 most interesting uses of CO2 for the industry.
Carbonated water, a mixture of water and CO2, is one of the natural ingredients in beer. However, many brewers use forced carbonation to give their products great benefits. The process is carried out by injecting this gas into the beer within suitable pressure and temperature conditions. This cools the drink and maintains the gas necessary for it to come out under pressure from the handle when the barrel is opened.
Acetylsalicylic acid, a fundamental product for synthesizing aspirin, is obtained by reacting sodium phenoxide with carbon dioxide at high temperature and pressure. Without this compound, therefore, we would not have access to this pill so widely used to eliminate headaches, among other ailments.
Inhalation of CO2 leaves animals insensitive, and therefore some, such as pigs and poultry, are exposed to this gas before being slaughtered in order to avoid unnecessary suffering. It is proven that this process leaves no trace or residue on the meat that we later eat.
Some scientists are currently working on projects to produce fuel from the modification of bacteria and microbes, including the use of carbon dioxide. In this way it could be substituted for gasoline, for example.
The main brands in the dairy industry inject CO2 into chilled raw milk so that it lasts longer, and without losing its properties once the container has been opened. Furthermore, according to the aforementioned book by Lourdes Vega, this milk preserved by CO2 acidification can also be used to make cheese.
The algae, once dry, are capable of generating energy. For this, they need to be modified by genetic engineering, from sunlight, water and CO2. In order to grow these algae, the gases emitted, mainly by thermal power plants, are used.
5% of the carbon dioxide emissions that occur in the world are due to the manufacture of cement. For this reason, some projects are studying the possibility of creating ecological cement from the incorporation of CO2 in the form of carbonate precipitated by the action of some bacteria. Cement companies agree to bet on these sustainable cements to help make a greener planet.
Put out fires
Carbon dioxide is used in the manufacture of fire extinguishers due to its favorable properties. For example, it can be perfectly compressed inside the extinguisher, it does not generate waste and does not react chemically with other substances.
Although it may sound strange to you, thanks to CO2 many fresh foods maintain a protective atmosphere that delays their degradation, unlike traditional packaging in air. To control the growth of bacteria and mold, there must be at least 20% carbon dioxide.
The presence of insects and mites in food can seriously affect the food industry, as can the use of insecticides or pesticides. After various analyzes it was found that carbon dioxide is capable of stimulating the opening of the respiratory orifices of insects and producing a desiccation that leads to their death. For this reason, the use of this gas has become a standard in this sector.