Kinetics Studies for the Adsorption of β-Carotene on Mesoporous Carbon Coated Monolith: Effect of Concentration and Temperature

摘要

The adsorption kinetics for the removal of β-carotene as functions of temperature and initial P-carotene concentration onto mesoporous j carbon coated monolith in isopropyl alcohol and n-hexane solutions was investigated. The adsorption capacity increased as initial P-carotene concentration and temperature increased. Two kinetic models, pseudo-first-order and pseudo-second-order, were used to describe the adsorption kinetics. To identify the adsorption mechanism rate parameters for intraparticle diffusion model were evaluated. The results showed that the adsorption of β-carotene onto mesoporous carbon coated monolith followed pseudo-first-order model in isopropyl alcohol solution and pseudo-second-order model in n-hexane solution. The activation energies were 11.45 and 9.41 kJ/mol in isopropyl alcohol and n-hexane solutions, respectively.