Back to Search
Start Over
Arsenic Removal Behavior by Fe-Al Binary Oxide: Thermodynamic and Kinetic Study.
- Source :
- Separation Science & Technology; Nov2011, Vol. 46 Issue 16, p2531-2538, 8p
- Publication Year :
- 2011
-
Abstract
- In this study, thermodynamic and kinetic behaviors of As(V) and As(III) adsorption on Fe-Al binary oxide were investigated. Adsorptions of both As(V) and As(III) on Fe-Al binary oxide were exothermic reactions (ΔH0 < 0) and occurred spontaneously (ΔG0 < 0). Because of strong electrostatic interaction between the As(V) anion and the positive Fe-Al binary oxide, As(V) was adsorbed rapidly and the adsorption rate was controlled by chemical adsorption. On the other hand, As(III) exists in a nonionic form, because of which it was not adsorbed through strong attractive forces. Therefore, the adsorption rate of As(III) was controlled by a combination of diffusion processes and chemical sorption. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01496395
- Volume :
- 46
- Issue :
- 16
- Database :
- Complementary Index
- Journal :
- Separation Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 67247131
- Full Text :
- https://doi.org/10.1080/01496395.2011.598205