Chemical reactions of sorbent with SO2

Using Ca(OH)2

Ca(OH)2 + SO2 →CaSO3 * 0,5H2O + 0,5H2O

Using NaHCO3

Thermic activation – calcination 2NaHCO3 → Na2CO3 + CO2 + H2O
Neutralising reaction Na2CO3 + SO2  → Na2SO3 + CO2
OxiOxidationdace Na2SO3 + 0,5O2  → Na2SO4