| 초록 |
To apply sericite effectively to the adsorption process, it was immobilized by entrapment method using sodium alginate. Since immobilized sericite beads have excellent mechanical strength and swelling characteristics, channeling of flow and the increase of pressure drop were not observed through column operations. In addition, it was also stable under pH 10 and 45°C of cesium solution. The maximum adsorption capacity and Langmuir adsorption constant was 1.430 mg/g and 2.329 L/mg, respectively at initial pH 5 of cesium solution in batch type and the Langmuir model with higher correlation coefficient of 0.997 fits experimental data better than Freundlich model. The breakthrough point was emerged around 15 (1.0 mL/min) and 20 bed volumes (0.5 mL/min) and the cesium ions for firstly reused sericite beads can be still maintained at 18 whith show good regeneration ability. |
