Laboratory Study and Mathematical Modeling of 1-butanol Adsorption on Activated Carbon

In this study, the equilibrium and kinetic absorption of 1-butanol on activated carbon adsorbent has been studied. Langmuir, Freundlich, and Toth isotherms are fitted on equilibrium data. A quasi-quadratic kinetic model and bifurcation penetration model have been used to model the absorption kinetics. The results have shown that the absorption of 1-butanol on active carbon is predicted by the Freundlich and Toth isotherm models with AARD 6.3% and 5.9% respectively. The pseudo-second kinetic model is well adjusted to experimental kinetic data. Using the biodegradation diffusion model, it has been shown that the intrusive penetration alone cannot predict the kinetics of adsorption, and there is more than one stage in the 1-butanol absorption process. Also, the results of the samilar work showed that the active carbon adsorbent used in this study was two times more absorbent than the zeolite adsorbent used in the references.