Poster (EARTH)

[PE1-046] Preparation for Hierarchical Porous Materials Using Mine Tailings

○Jiwon Yang¹, Seongmin Kim¹, Wonjae Lee¹, Yoonha Jung¹, Jaikoo Park¹ (1. Hanyang University)

Keywords:Mine tailings, Mesoporous silica, Porous ceramic beads, Impregnation, Hierarchical porous materials

Hierarchical porous materials containing meso and macro pores have been successfully prepared by using mine tailings. Firstly, mesoporous silica SBA-15 was synthesized using the silicate extracted from mine tailings. And then, macroporous ceramic beads were prepared by mine tailings as a starting material. Finally, surface of porous beads was coated with SBA-15 by wet impregnation method. The physicochemical properties of hierarchical porous materials were characterized by surface area analysis, infrared spectrometer, thermogravimetric analysis, scanning electron microscope and transmission electron microscope. As a result, the BET surface area of SBA-15 and porous ceramic beads was >500 m²/g and >0.7 m²/g respectively. After impregnation, the increase of BET surface area for coated porous beads was identified (<52 m²/g). Therefore, it can be used by adsorbents of metal ions for selective recovery.