| 초록 |
The influence of thermal and chemical treatment on the adsorption capacity of spent activated carbon (AC) was examined. In this work, three different treatment procedures were applied: 1) thermal air, 2) acid washing, and 3) thermal air plus acid washing. Nitrogen adsorption was used to characterize the textural properties of the spent AC and the regenerated ACs. To describe the column dynamics of toluene adsorption, a simple mathematical fixed bed model was employed. It was found that the regeneration effect is more evident with thermal air than with acid washing. Moreover, when thermal air and acid washing were employed together, the textural and adsorption properties represented greater surface area, pore volume and adsorbed amount at low acidity than at high acidity. This reserch was supported by the program for the Construction of EIP which was conducted by KICOX and MKE. |
