Abstract
The amount of oxygen dissolved in water under atmospheric pressure is approximately 8 ppm at 25 ° C.
Metals will get rusted by water and oxygen. The reaction of iron rusting process happens like this : When iron comes into contact with water, it dissolves in water as iron ions, and at the same time, dissolved oxygen produces hydroxide ions. Iron (II) hydroxide is formed by the reaction of iron ions and hydroxide ions. This is oxidized by dissolved oxygen, thus produces ferric hydroxide containing hydroxide called red rust.
Red rust on pipes can be prevented by removing dissolved oxygen using NAGASEP. In addition, the flow of degassed water through the pipe would naturally create a film of triiron tetroxide called black rust. This black rust is formed on the surface of the iron and won’t react with moisture or oxygen, which can suppress the occurrence of red rust.
