Removal of phosphate from aqueous solution by functionalized mesoporous materials

Jae Woo Choi, Seung Yeon Lee, Seung Gun Chung, Seok Won Hong, Dong Ju Kim, Sang Hyup Lee

Research output: Contribution to journalArticle

12 Citations (Scopus)

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, Brunauer-Emmett-Teller, Fourier transform spectroscopy, and transmission electron microscopy. 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 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.

Original languageEnglish
Pages (from-to)243-254
Number of pages12
JournalWater, Air, and Soil Pollution
Volume222
Issue number1-4
DOIs
Publication statusPublished - 2011 Nov

Keywords

  • Amine-functionalized
  • Mesostructure
  • One-pot synthesis
  • Phosphate
  • Post-synthesis

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modelling
  • Water Science and Technology
  • Pollution

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