Many Scrubbers Include Compounds Like Magnesium Hydroxide, Mg(OH)₂

Many scrubbers include compounds like magnesium hydroxide, Mg(OH) ₂ . What is the role of these compounds in the scrubbing process?

A) The help to distribute gasses in the fluidized bed.
B) They react with excess CO₂ to produce metal carbonates.
C) They bind with the sulfur compounds to form easily handled solids.
D) They react with acids in the flue gasses to form insoluble salts that can be scrubbed out.
E) None of the above