I want to know whether we can use HCl, H2SO4, HNO3, acetic acid ane if so, whatt should be the concentration? In our supply water, iron content is very high. so iron is clogged. Please give me proper suggestion.
This is according to scaling/deposition condition if hard than concentration to be increased. For very hard 20% solution may be used. Organic (Citric, Oxalic) acid is mostly used.
The Citric acid solution is the best solution for descaling. 1or 2 tablespoon per liter for light scaling. But weaker solutions work, but more slowly. If you are disassembling the machine, and putting the parts in an acid bath; you can remove heavy scale, and you can use a stronger acid. For this app, hydrochloric acid, aka muriatic, is normally used, at a full pH lower. If you are using citric acid in this way, you can use around 10 tablespoons per liter. You should wear the standard high school lab gear -- gloves, goggles and breathing mask -- since at this strength, it will burn skin.
the iron in contact with the air forms an oxide of iron which precipitates, from which I advise you to use the method of filtration you filter the iron oxide.
This is a glass system so dilute HCl will do the job nicely. Detach the glassware that need cleaning and fill it with the dilute HCl (this can be done in a bucket or similar.
A gentler method is to use Oxalic acid - https://www.youtube.com/watch?v=JRk6w9KanZM
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