121st General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code MAT.P-452
Subject Preparation of porous adsorbent from as-obtained slag and evaluation of adsorption ability for cadmium and albumin
Authors Hong-Beom Lee, Hyoung-Mi Kim1, Tae-Hyun Kim, Jae-Min OH1,*
Department of Chemistry and Medical Chemistry, Yonsei University, Korea
1Chemistry and Department of Medical Chemistry, Yonsei University, Korea
Abstract We prepared porous adsorbent (PA) from as-obtained Slag (SL) through dissolution-reprecipitation process. For the preparation of PA, we dispersed SL into 1 M of HCl and vigorously stirred for 4 h at 100 oC to extract metal species. Then the suspension was filtrated to extract metal solution. After filtration, alkaline solution (0.6 M of NaOH and NaHCO3) was dropwisely added into metal solution until the pH reached ~12.5. The obtained slurry was aged for 24 h at room temperature under vigorous stirring. The products were collected by filtration and lyophilized. From X-ray diffraction patterns, obtained PA showed typical diffraction patterns of calcite (JCPDS No. 05-0586) and rhodochrosite (JCPDS No. 07-268). The specific surface area and pore size of prepared PA was evaluated with nitrogen adsorption-desorption and determined to be 110.6 m2g-1 and 20.2 nm, respectively. From this result, we assume that prepared PA could be a potential candidate for heavy metal and protein absorbents. From cadmium and albumin adsorption study, it was revealed that prepared PA showed 4 times more enhanced cadmium adsorption and 30 times higher albumin adsorption efficiency than SL.
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