Adsorption properties of SO2 using fibrous strong-base anionic ion exchange scrubber

The purpose of this research is to absorb and remove Sulfur dioxide existing in the air by using ion exchange non-woven fabric. So we found out very appropriate condition of anionic exchange fabric scrubber by measuring amount of SO2 adsorption under the atmosphere that concentration, velocity, and humidity was 100similar to200 ppm, 0.6similar to1.0 m/sec, and 30similar to90 RH%, respectively. Ion exchange capacity of ion exchanger showed the maximum value, 3.75 meq/g at pH 4, and adsorption equilibrium time was the maximum value, 30 h when gas velocity was 0.6 m/sec, moreover, at 80 degreesC, adsorption equilibrium time tended to decrease more than 10 h. When concentration was 200 pain, while reaction speed between SO2 and ligand of fibrous ion exchanger was getting faster, adsorption break point had a tendency to get faster as well. In addition, when relative humidity in the scrubber was 90%, adsorption efficiency was 7.6%/h that seemed to be 30% higher than 4.6%/h coming from the condition that relative humidity had been 30%, and it was totally absorbed under 5 wt% NaOH solution in 5 minutes.