| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 147506 | Chemical Engineering Journal | 2014 | 10 Pages |
•Simple preparation route to synthesize CaO nanoparticles loaded mesoporous Al2O3.•Higher fluoride removal capacity of CaO loaded Al2O3 than that of pure Al2O3.•Faster fluoride adsorption kinetics of CaO loaded Al2O3 from water.
In this paper, we report a simple chemical method for the preparation of CaO loaded mesoporous Al2O3 based adsorbents, which can be used for fluoride removal from water. The synthesized adsorbents were characterized by using powder X-ray diffractometer, N2 adsorption–desorption surface area and pore size analyzer and high resolution transmission electron microscope. CaO loaded mesoporous aluminas exhibited poor crystalline mesoporous structure having γ-Al2O3 phase. The fluoride removal capacities of the synthesized adsorbents were evaluated using batch adsorption studies. Kinetic data revealed that, the fluoride sorption on 20 wt.% CaO loaded mesoporous Al2O3 was rapid, and ∼90% fluoride removal was achieved within 15 min. CaO loaded mesoporous Al2O3 showed higher fluoride adsorption capacity (137 mg/g) and faster kinetics than mesoporous Al2O3.
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