| 초록 |
Fly ash consists the various metal oxides which can removal the SO2 gas by catalyst effect. When fly ash is added in the preparation process of pitch-based activated carbon, the pitch particles aggregate and fly ash is embedded in the activated carbon. In this study, to increase SO2 gas removal performance, activated carbon/fly ash (AC/FA) complex was prepared by surface treated fly ash and petroleum-based pitch. To expose the embedded fly ash to the activated carbon outside, carboxyl groups which are acted as an activation agent were introduced on the fly ash surface by a malic acid treatment. The exposed fly ash increased removal amount of SO2 gas. The SO2 gas removal performance improved by 34% because of the synergy effect of fly ash addition and improving of micropore structure in activated carbon. |
