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 language | English |
|---|---|
| Pages (from-to) | 243-254 |
| Number of pages | 12 |
| Journal | Water, Air, and Soil Pollution |
| Volume | 222 |
| Issue number | 1-4 |
| DOIs | |
| Publication status | Published - 2011 Nov |
Bibliographical note
Funding Information:Acknowledgment The authors acknowledge the grant for this study via project No. 071-091-137 from the Next-Generation Core Environmental Technology Development Project of the Korean Ministry of the Environment.
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