Aerated water
The aerated water or semi-sparkling or gasified is a mineral Water to which one or more Gaz was added. According to the nature of water, a more or less important gas addition is necessary. Some sources provide already semi-sparkling water. But they are treated (gas addition) before any marketing. When semi-sparkling water is marked “semi-sparkling water natural” that means that there was not gas addition, indeed with the water source and gases cohabit in the same underground layer. But they are collected individually and gathered during the congestion.
The gas most usually used is the Carbon dioxide (CO2), which forms bubbles when the drink is depressurized. One also speaks about nitrogen, present in the air, which can dissolve in aerated water.
Historically, the first gasified water was prepared by adding Bicarbonate of sodium to the Limonade. A Chemical reaction between sodium bicarbonate and the citric Acid created the Carbon dioxide.
As for many scientific discoveries, there is a confusion for which was the creator. The person who is usually credited to have created this type of water is Joseph Priestley in 1796. However the Swedish chemistry teacher Torbern Bergman had already succeeded in 1771, especially to make economies when it was sick. Both tried to imitate the effervescent effect of the underground sources, and it was thought that it was favorable to health. It is not known if Joseph Priestley knew work of Torbern Bergman.
Currently, this type of water is obtained while passing from the Carbon dioxide under pressure through water. That increases the Solubilité, i.e. there is more dissolved CO2 than under the ordinary atmospheric pressure. When the pressure is reduced by opening the bottle, the gas leaves the mixture, forming the characteristic bubbles.
There exist now apparatuses to make oneself even its aerated water at the house, like http://www.sodaquick.com, at a cost lower than large distribution, and by eliminating pollution due to transport from the bottles, plastic eliminations in discharge, etc. these apparatuses are sold 59 euros on the Net and function with bottles food, refillable steel of CO2. It is recommended to make natural drinks as lemonades with old (green lemon + syrup of cane with sugar) semi-sparkling fruit juices, etc, to be able to do without chemical sodas of large distribution
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