Removal of phosphate from aqueous solution by functionalized mesoporous materials

Title
Removal of phosphate from aqueous solution by functionalized mesoporous materials
Authors
최재우이승연정승건홍석원김동주이상협
Keywords
amine functionalized; mesostructure; phosphate; post synthesis; one-pot synthesis
Issue Date
2011-11
Publisher
Water, air, and soil pollution
Citation
VOL 222, 243-254
Abstract
In the present study, the applications of mesoporous materials based on silica, namely post synthesized, one-pot synthesized and pure MCM-41, 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 spectroscopy (FT-IR) and transmission electron microscopy (TEM). The absorptions of phosphate by the mesoporous adsorbents were examined, with different adsorption models used to describe the equilibrium and kinetic data. The maximum adsorption capacities of the mesostructure adsorbents were found to be 45.162, 40.806 and 31.123 mg g-1 14 for the post synthesized, one-pot synthesized and pure MCM-41, respectively. The kinetic data showed that the adsorptions of phosphate onto the post synthesized and pure MCM-41 followed the pseudo-first-order kinetic model; whereas, the one pot synthesized adsorbent was described by the pseudo-second-order model.
URI
http://pubs.kist.re.kr/handle/201004/39633
ISSN
0049-6979
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KIST Publication > Article
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