Dragon House This is not exactly an educational series. However, sometimes we can go for a trick or Home remedy very useful for our daily life, although we do not even realize it. This is exactly what happens in the fifth chapter, almost at the beginning. At some point we see how Sir Christon Cole He cleans his sword with half a lemon soaked in salt. He does this while talking to Alicent and goes almost unnoticed. But there he shows us a cure that is as old as it is modern. clean metal from rust.
This method that we see in Dragon House It is based on two very important properties of lemon and salt. The first contains lemon acid. All acids help dissolve rust, but this one is much more gentle on metal and cleaner for the environment. As for salt, it is used abrasive paper.
Ser Criston Cole put his sword to good use in Battle of Resa del Grajo. It might be dirty from dirt and blood. It might also have gotten wet and rusted on the blade. So before he let things get out of hand, he resorted to a homemade trick to clean the rust off. We don’t have the sword these days (at least most of us don’t), but there are other metals that could benefit from this remedy, and more modern versions that have emerged as the science behind it has become known.
Different types of citric acid for cleaning rust from metals
That orange layer that we only call rust is usually iron oxide. It dissolves very well in any acid. Also, in the case of citric acid citrate ion formed as a result of its decomposition combines with iron ions, forming iron citrate. Thus, the oxide layer is completely decomposed.
Citric acid is found in lemons and other fruits. For example, attempts have been made to obtain citric acid from fermented passion fruit with mushrooms like Aspergillus niger. This is a much more modern industrial product than what we see in Dragon House. But this simple part of soaking lemon in salt can also save us from trouble.
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In the fifth chapter Dragon House Sir Christon places half a lemon on a plate full of salt. Then pass the lemon straight across the blade of the sword.
Nowadays, people who use home remedies do it in a different way. The most common way is to mix lemon juice and salt in equal parts and apply this mixture to a cleaning sponge to clean rust off metal.
Salt abrasion is mild, so it does not cause much damage to metal. However, milder alternatives have been studied, such as High intensity light irradiation combined with citric acid.
Again, this is an industrial alternative. We cannot use this type of lamp at home, so we will have no choice but to resort to salt. Unless it is a very delicate item, abrasion will not cause serious damage.
Of course, Ser Criston couldn’t mind a little salt abrasion after using his sword in a battle as bloody as the one we saw in Chapter Four. Dragon HouseWhat we want to do with our kitchen knives is up to us.
Source: Hiper Textual
