Staff Members - Benha University
Performance Evaluation of Fixed Bed Column Packed with Ionic Liquid Impregnated Silica for Separation of Gadolinium and Neodymium from Aqueous Solutions
Chromatographia • 2021
Publication Information
Authors
H. A. Ibrahim1
· S. S. Metwally1
· W. R. Mohamed1
· E. A. El‑Sherief1
· H. S. Mekhamer1
· Islam M. I. Moustafa2
·
E. M. Mabrouk2
Keywords
Separation · Impregnation · Nd3+ and Gd3+ · Fixed bed column · Modeling
Journal
Chromatographia
Publisher
springer
Volume
84
Issue
Not Available
Pages
335-445
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
Application of fxed bed column for separation of gadolinium and neodymium ions from their aqueous solutions using cyphos
IL-104 impregnated silica was investigated. The performance of separation of the two lanthanide elements was evaluated
by determining the column capacity, the total quantity sorbed of metal ions, and the removal percentage. These indicative
column performance parameters were evaluated in altered conditions including fxed bed height of 2.0 and 3.0 cm, fow rate
of 1.0 and 2.0 mL/min, and solution feed concentration of 50 and 100 ppm. Breakthrough modeling of the sorption process
across the column was performed by employing Thomas and Adams–Bohart models. It was found that it took less time to
reach the breakthrough when the fow rate and initial concentration increased, while the height of the bed decreased. Also,
the column capacity increased by increasing the bed depth, decreasing the fow rate, and increasing the initial metal ion
concentrations. 0.1 M nitric acid was found to be the best media for the separation of Nd3+ and Gd3+ ions.
IL-104 impregnated silica was investigated. The performance of separation of the two lanthanide elements was evaluated
by determining the column capacity, the total quantity sorbed of metal ions, and the removal percentage. These indicative
column performance parameters were evaluated in altered conditions including fxed bed height of 2.0 and 3.0 cm, fow rate
of 1.0 and 2.0 mL/min, and solution feed concentration of 50 and 100 ppm. Breakthrough modeling of the sorption process
across the column was performed by employing Thomas and Adams–Bohart models. It was found that it took less time to
reach the breakthrough when the fow rate and initial concentration increased, while the height of the bed decreased. Also,
the column capacity increased by increasing the bed depth, decreasing the fow rate, and increasing the initial metal ion
concentrations. 0.1 M nitric acid was found to be the best media for the separation of Nd3+ and Gd3+ ions.