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Impregnation and Characterization of High Performance Extraction Columns for Separation of Metal Ions

Impregnation and Characterization of High Performance Extraction Columns for Separation of Metal Ions

Category
Journal publication
Abstract
Impregnation behaviors of reverse-phase silica materials and C18-silica HPLC columns were studied using di-(2-ethylhexyl)phosphoric acid (HDEHP) as a model extractant. Initially, the adsorption efficiency of the ligand on different types of bulk particles was investigated using various concentration of HDEHP in different composition of methanol/water mixtures based on a batch technique. Subsequently, impregnation of HPLC columns was performed using the dynamic flow-through technique. The experimental data fitted well to the Langmuir model and the adsorption isotherms from the flow-through experiment were used to prepare extraction columns of different ligand densities. Finally, the impregnated columns were characterized and validated through HPLC separation of the lanthanides.
Language
English
Author(s)
Affiliation
  • University of Oslo
  • SINTEF Industry / Process Technology
  • Lund University
Year
2013
Published in
Solvent extraction and ion exchange
ISSN
0736-6299
Volume
31
Issue
6
Page(s)
668 - 682