Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8012305 | Materials Letters | 2018 | 15 Pages |
Abstract
Bio-nanosilica was obtained from rice husk thought an alternative ultrasound process and, the material was used to adsorb Crystal Violet (CV) dye from aqueous effluents. Ultrasound modified bio-nanosilica (UM-nSiO2) presented better characteristics than standard nano-silica (nSiO2), demonstrating that ultrasound technique has great potential to generate a promising material for adsorption purposes. The adsorption study was carried out by the kinetic curves, equilibrium isotherms and thermodynamics. Pseudo-second order model was the best to represent the kinetic curves. To represent the equilibrium curves, BET and Freundlich were suitable. Bio-nanosilica attained adsorption capacity of 495â¯mgâ¯gâ1 and removal percentage of 98%, being an efficient adsorbent for CV dye.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Enrique C. Peres, Nathália Favarin, Jenifer Slaviero, André R.F. Almeida, Michele P. Enders, Edson I. Muller, Guilherme L. Dotto,