期刊
CHEMICAL ENGINEERING JOURNAL
卷 166, 期 1, 页码 454-459出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2010.11.017
关键词
Heavy metals removal; Mesoporous silica; Amine-functionalized SBA-15; Adsorption; Co-condensation; Kinetics
资金
- Natural Science and Engineering Council of Canada (NSERC)
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. (C) 2010 Elsevier B.V. All rights reserved.
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