Adsorption of gamma-picoline onto acid-activated bentonite from aqueous solution

作者：Rawajfih Zahir^*; Nsour Najwa

来源：Applied Clay Science, 2010, 47(3-4): 421-427.

DOI：10.1016/j.clay.2009.12.012

• Acid-activated bentonite
• Adsorption
• Isosteric heat
• gamma-picoline

The adsorption of gamma-picoline onto acid-activated bentonite was investigated. The adsorption reached a maximum at pH=7. Pseudo-first-order, pseudo-second-order, the Elovich equation, and intraparticle diffusion models were used to analyze the kinetic data obtained at different concentrations. The pseudo-second-order model was best applicable to describe the adsorption of gamma-picoline on acid-activated bentonite. The Langmuir model provided good correlation with the experimental data. The adsorption of gamma-picoline was endothermic with Delta H degrees = 29 J/mol.

• 出版日期2010-2