Journal
ADSORPTION SCIENCE & TECHNOLOGY
Volume 36, Issue 5-6, Pages 1274-1293Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0263617418768920
Keywords
Rice husk ash; uranium adsorption; activated carbon; amorphous silica
Ask authors/readers for more resources
A composite of rice husk (RH), caustic soda and aluminium oxide was synthesized at 500 degrees C. The activated carbon and amorphous silica dispersed over the aluminium oxide selectively adsorbed uranium in the presence of other elements. At equilibrium time 1 h, phase ratio S/L (0.1 g/10 ml), pH=5 and uranium initial concentration 120.6 mg/l uranium adsorption efficiency was 96.35%. The uranium stripping efficiency from the load RHA-alumina composite fulfilled 99.9% at 1 h equilibrium time, a phase ratio (S/A) of 0.05 g/10 ml and 0.5 mol/l HNO3. The scanning electron microscopy photos revealed that the rice husk ash (RHA)-alumina composite has vacant or regular cavities before the adsorption, and the cavities are fully occupied by uranium after adsorption. The Fourier transform infrared spectroscopy shows a more broadening of the band nu = 3526 and 3462 cm(-1) which was ascribed to the uranium adsorption. The composite adsorbed 93.75% of uranium from a waste sample. The uranium adsorption exhibited a Langmuir isotherm.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available