There's this here PopMech article on the reconstruction of the I-35W bridge... containing this line:
The concrete is mixed with an Italian compound called TX Active, which is designed to turn pollutants—such as sulfur dioxides and carbon monoxide—into salt.
Er... how's that work, exactly? The word salt, in casual English usage such as this, refers to sodium chloride, which is a compound made up of two elements: sodium and chlorine.
Sulfur dioxide (the plural makes no sense) is made up of, let's see now, sulfur and oxygen. Carbon monoxide is made up of carbon and, again, oxygen.
Unless the active ingredient is powdered philosopher's stone, there's just no doggone way to get from sulfur, carbon, and oxygen on the one hand, to sodium and chlorine on the other.