title: Solid phase extraction of copper(II) by fixed bed procedure on cation exchange complexing resins.
abstract: The efficiency of the metal ion recovery by solid phase extraction (SPE) in complexing resins columns is predicted by a simple model based on two parameters reflecting the sorption equilibria and kinetics of the metal ion on the considered resin. The parameter related to the adsorption equilibria was evaluated by the Gibbs-Donnan model, and that related to the kinetics by assuming that the ion exchange is the adsorption rate determining step. The predicted parameters make it possible to evaluate the breakthrough volume of the considered metal ion, Cu(II), from different kinds of complexing resins, and at different conditions, such as acidity and ionic composition.
authors.affiliation: Dipartimento di Chimica Generale, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy. maria.pesavento@unipv.it
authors.forename: Maria
authors.initials: M
authors.lastname: Pesavento
authors.forename: Michela
authors.initials: M
authors.lastname: Sturini
authors.forename: Girolamo
authors.initials: G
authors.lastname: D'Agostino
authors.forename: Raffaela
authors.initials: R
authors.lastname: Biesuz
mesh_terms: D000327:Adsorption; D002411:Cation Exchange Resins / Q000737:chemistry*; D003300:Copper / Q000302:isolation & purification*; D007700:Kinetics; D052616:Solid Phase Extraction / Q000379:methods*
chemical_list: D002411:Cation Exchange Resins; D003300:Copper