Abstract
Equilibrium isotherms of sterol adsorption on zeolite show the characteristics of irreversible equilibrium adsorption. First order and second order surface adsorption control mechanisms as well as micropore diffusion control model failed to satisfactorily describe the kinetics of sterol adsorption on zeolite. From the analysis of adsorption data, it was found that macropore diffusion control model satisfactorily describes the kinetics of sterol adsorption on zeolite. The effect of temperature on the diffusivity during adsorption was found to conform to the Eyring equation. It was shown that a change in temperature has a negligible effect on the selectivity of sterol adsorption on zeolite.
Original language | English |
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Pages (from-to) | 611-624 |
Number of pages | 14 |
Journal | Separation Science and Technology |
Volume | 42 |
Issue number | 3 |
DOIs | |
Publication status | Published - Feb 2007 |
Externally published | Yes |
Keywords
- Adsorption
- Campesterol
- Kinetic model
- Zeolite
- β-sitosterol