Ca(OH)2 in acidic effluent treatment

  • Calcium hydroxide is limestone. 

  • The neutralization process occurs when strong acids, in intimate contact with limestone chips, react with Calcium Carbonate (CaCO3, the primary constituent of limestone) to form water, carbon dioxide, and calcium salts.

  • The following depicts the neutralization of hydrochloric acid by limestone.

  • CaCO3 + 2HCl


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