Bui, Tung Xuan Kang, Seo-Young Lee, Sang-Hyup Choi, Heechul 2024-01-20T16:03:33Z 2024-01-20T16:03:33Z 2021-09-05 2011-10-15 0304-3894 https://pubs.kist.re.kr/handle/201004/129887 Mesoporous silica SBA-15 and its postfunctionalized counterparts with hydroxymethyl (HM-SBA-15), aminopropyl (AP-SBA-15), and trimethylsilyl (TMS-SBA-15) were prepared and characterized by powder X-ray diffraction, N-2 adsorption-desorption measurement. Fourier-transform infrared spectroscopy, and elemental analysis. The removal of a mixture of 12 selected pharmaceuticals was investigated by batch adsorption experiments onto SBA-15 and the grafted materials. SBA-15 showed to have moderate adsorption affinity with amino-containing (atenolol, trimethoprim) and hydrophobic pharmaceuticals. but it displayed minimal adsorption affinity toward hydrophilic compounds. HM-SBA-15 was analogous with SBA-15 in terms of the adsorption efficiency toward all pharmaceuticals. AP-SBA-15 exhibited an increase in the adsorption of two acidic compounds (clofibric acid, diclofenac) but a decrease in the adsorption of estrone and the two amino-containing compounds. Among the grafted materials, TMS-SBA-15 had the highest adsorption affinity toward most pharmaceuticals. Moreover, the adsorption of nine pharmaceuticals to TMS-SBA-15 was significantly higher than that to SBA-15; seven of which showed the removal percentages from 70.6% to 98.9% onto TMS-SBA-15. The number of pharmaceuticals showing high adsorption efficiency onto TMS-SBA-15 did not alter significantly as the pH changed in the range of 5.5-7.6. The results suggest that TMS-SBA-15 is a promising material for the removal of pharmaceuticals from aqueous phase, especially for the treatment of wastewater from drug manufacturers. (C) 2011 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV CONTAMINANTS SURFACE SILICA ENVIRONMENT ADSORBENTS Organically functionalized mesoporous SBA-15 as sorbents for removal of selected pharmaceuticals from water Article 10.1016/j.jhazmat.2011.07.043 1 JOURNAL OF HAZARDOUS MATERIALS, v.193, pp.156 - 163 JOURNAL OF HAZARDOUS MATERIALS 193 156 163 scie scopus 000296317500020 2-s2.0-80053254337 Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology Article CONTAMINANTS SURFACE SILICA ENVIRONMENT ADSORBENTS Adsorption Pharmaceuticals Functionalization Mesoporous silica SBA-15 Trimethylsilyl groups