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Srinivas Rao Grade:
        Colgon is used to soften hard water. But, is there any method to regenerate exhausted colgon?
6 years ago

Answers : (1)

SAGAR SINGH - IIT DELHI
879 Points
										

Dear srinivas,


Calgon process


Calgon is a trade name of a complex salt, sodium hexametaphosphate


(NaPO3)6. It is used for softening hard water. Calgon ionizes to give a complex anion:


ionization of calgon

The addition of Calgon to hard water causes the calcium and magnesium ions of hard water to displace sodium ions from the anion of Calgon.


addition of Calgon to hard water

This results in the removal of calcium and magnesium ions from hard water in the form of a complex with Calgon. The water is softened and sodium ions are released into water.


 






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Sagar Singh


B.Tech IIT Delhi


sagarsingh24.iitd@gmail.com















6 years ago
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