hiii i want a method to saparate water from so2 ?
Don't SO2 scrubbers typically use sodium hydroxide? Hadn't heard of a barium hydroxide column.
You could use NaOH for dry gasses. I recommended barium hydroxide because of its limited solubility in water. A more soluble base, like lime, would cake up and stop passing gas. Sodium hydroxide would be even more susceptible.