Zeolite used in water softening process (cation exchange) is regenerated by washing with___________________?
Correct answer: A. Brine
- A. Brine
- B. Chloramines
- C. Sodium bisulphite
- D. Liquid chlorines
Explanation
Zeolite exchanges its sodium ions for calcium and magnesium during softening. Concentrated brine restores the sodium form of the zeolite, so brine is used for regeneration.
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