Adsorption of copper on amine-functionalized SBA-15 prepared by co-condensation: Kinetics properties

作者：Da'na Enshirah; De Silva Nimal; Sayari Abdelhamid^*

来源：Chemical Engineering Journal, 2011, 166(1): 454-459.

DOI：10.1016/j.cej.2010.11.017

• Heavy metals removal
• Mesoporous silica
• Amine-functionalized SBA-15
• Adsorption
• Co-condensation
• Kinetics

Amino-functionalized SBA-15 prepared by co-condensation was tested for the removal of copper ions from aqueous solutions under different temperatures, pH, initial concentrations and agitation speeds. The obtained results indicated that the amino-functionalized SBA-15 was very efficient and equilibrium was achieved in less than 30 min at room temperature. The kinetic data was analyzed using four models, namely the first-order, the pseudo first- and second-order and the intraparticle diffusion model. Within the conditions used, the pseudo second-order kinetic model provided the best fit to the experimental data. Applying the intraparticle model showed that the adsorption involved three different stages.

• 出版日期2011-1-1