Sodium chloride can be obtained when we add water to salt deposits, extracted from brine, an alternative is to obtain it through seawater. This second is known as sea salt or table salt, which is consumed for meals, but has certain impurities.
HOW CAN WE OBTAIN SODIUM CHLORIDE IN A PURE AND DRY FORM?
Being able to obtain pure salt requires a certain process, this is called evaporation of salt water. The salt is produced in the water of the coasts, the sun and its energy in the day, the water is evaporated and in this way to obtain the dry salt for the human consumption, when evaporating it leaves a residue that mixes with several salts.
There are many producers and industrial salt that are dedicated to this evaporation of sodium chloride and thus receive our homes sodium chloride, or better known as salt or table salt.
· BY THE SEA
The sea is known to be a huge deposit of minerals on our planet. In its waters we can find almost everything: iron, copper, aluminum, silver and even gold. A curious fact is that, in a cubic kilometer of sea water, we can find up to four kilograms of gold. Although it seems a lot, anyway, it is a somewhat complicated amount to extract from marine waters.
But the opposite would happen with the salts contained in the sea. Indeed, we know that the salt of the sea is so much so, that, if we could remove it all, we would be able to cover with it the entire continents with a layer of at least 150 meters thick.
· USE OF SALINAS
To extract salt from the sea, there are large facilities that are known as “salinas“. They are in fact deposits with little depth, where the accumulation of seawater is allowed to begin the extraction of sodium chloride. Due to the effect of the sun and the wind, the water ends up evaporating, leaving the salt exposed at the bottom.
The salt ends up being collected and transported to the factories that are responsible for packaging it and then it is sold in stores. The salt can also be extracted from the subsoil, in the form of rock, but in this case, it takes the name of rock salt, but its origin ends up being the same.