In this work, a model for the description of metallic ions adsorption onto activated carbon is presented. The model starts from an evaluation of ion speciation and considers the presence of both the acid-basic sites and nucleophilic/electrophilic active sites on the activated carbon. Moreover, the multicomponent Langmuir model is considered. The model has been used to correlate experimental data on the adsorption of Hg(II), Cr(VI), Cr(III), and As(V) on activated carbon. A good matching between experimental results and model predictions has been obtained for all the investigated conditions.

Adsorption of metallic ions from aqueous solutions onto activated carbons

DI NATALE, Francesco;ERTO, ALESSANDRO;LANCIA, AMEDEO;
2006

Abstract

In this work, a model for the description of metallic ions adsorption onto activated carbon is presented. The model starts from an evaluation of ion speciation and considers the presence of both the acid-basic sites and nucleophilic/electrophilic active sites on the activated carbon. Moreover, the multicomponent Langmuir model is considered. The model has been used to correlate experimental data on the adsorption of Hg(II), Cr(VI), Cr(III), and As(V) on activated carbon. A good matching between experimental results and model predictions has been obtained for all the investigated conditions.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/307034
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