The effect of variables on efficiency of SO₂ removal from a simulated waste gas by use of ammonia solution was studied. The variables were gas, feed solution and recirculation flow rate, SO₂ concentration in the gas phase, NH₃ concentration in the ammonia solution, and pH in scrubber effluent solutions.
The scrubber was 3"-OD methyl metacrylate column packed with 1●4"-plastic Rasching rings in 90 cm packed height.
Solution analysis was performed by Palmrose method and pH meter.
The following empirical equations were obtained by regression analysis;
EFF = 33.52 G^0.0552 F^0.118 R^0.772
EFF = 64.10 S^0.143 N^0.0153
k_G = 3.51 × 10^-6 G^1.160 L^0.647