Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5359599 | Applied Surface Science | 2015 | 42 Pages |
Abstract
MgO nanoparticle loaded mesoporous alumina has been synthesized using a simple aqueous solution based cost effective method for removal of fluoride from water. Wide angle powder X-ray diffraction, nitrogen adsorption desorption analysis, transmission electron microscopy techniques and energy dispersive X-ray spectroscopy were used to characterize the synthesized adsorbents. Synthesized adsorbents possess high surface area with mesoporous structure. The adsorbents have been thoroughly investigated for the adsorption of Fâ using batch adsorption method. MgO nanoparticle loading on mesoporous Al2O3 enhances the Fâ adsorption capacity of Al2O3 from 56% to 90% (initial Fâ concentration = 10 mg Lâ1). Kinetic study revealed that adsorption kinetics follows the pseudo-second order model, suggesting the chemisorption mechanism. The Fâ adsorption isotherm data was explained by both Langmuir and Freundlich model. The maximum adsorption capacity of 40MgO@Al2O3 was 37.35 mg gâ1. It was also observed that, when the solutions having Fâ concentration of 5 mg Lâ1 and 10 mg Lâ1 was treated with 40MgO@Al2O3, the Fâ concentration in treated water became <1 mg Lâ1, which is well below the recommendation of WHO.
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Authors
Desagani Dayananda, Venkateswara R. Sarva, Sivankutty V. Prasad, Jayaraman Arunachalam, Padmanabhan Parameswaran, Narendra N. Ghosh,