Adsorption of phosphate by amino-functionalized and co-condensed SBA-15

Title
Adsorption of phosphate by amino-functionalized and co-condensed SBA-15
Authors
최재우이승연이상협이기봉김동주홍석원
Keywords
Amino-functionalized; Co-condensation; Grafting; Mesoporous silica; Phosphate; SBA-15
Issue Date
2012-06
Publisher
Water, air, and soil pollution
Citation
VOL 223, NO 5, 2551-2562
Abstract
In this study, the applications of mesoporous materials based on silica, and those with modifications, namely post synthetic grafting, co-condensation and pure SBA-15, were investigated for the removal of phosphate from aqueous solution. The mesostructures were confirmed by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). The absorption of phosphate by the mesoporous adsorbents was examined, using different adsorption models to describe the equilibrium and kinetic data. The maximum adsorption capacities of the mesostructured adsorbents were found to be 69.970, 59.890 and 2.018 mg/g for the co-condensation, post synthetic grafting and pure SBA-15, respectively. The kinetic data showed that the adsorption of phosphate onto three different mesostructures followed the pseudo-first-order kinetic model.
URI
http://pubs.kist.re.kr/handle/201004/45653
ISSN
0049-6979
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KIST Publication > Article
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