Advanced

Modeling Preparative Chromatographic Separation of Heavy Rare Earth Elements and Optimization of Thulium Purification

Max-Hansen, Mark LU ; Knutson, Hans-Kristian LU ; Jönsson, Christian; Degerman, Marcus LU and Nilsson, Bernt LU (2015) In Advances in Materials Physics and Chemistry 5(5). p.151-160
Abstract
Rare Earth Elements are in growing demand globally. This paper presents a case study of applied mathematical modeling and multi objective optimization to optimize the separation of heavy Rare Earth Elements, Terbium-Lutetium, by means of preparative solid phase extraction chromatography, which means that an extraction ligand, HDEHP, is immobilized on a C18 silica phase, and nitric acid is used as an eluent. An ICP-MS was used for online detection of the Rare Earths. A methodology for calibration and optimization is presented, and applied to an industrially relevant mixture. Results show that Thulium is produced at 99% purity, with a productivity of 0.2 - 0.5 kg Tm per m3 stationary phase and second, with Yields from 74% to 99%.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Rare Earth Elements, Chromatography, Model Calibration, Optimization, Multi-Objective, HDEHP
in
Advances in Materials Physics and Chemistry
volume
5
issue
5
pages
151 - 160
publisher
Scientific Research
ISSN
2162-5328
DOI
10.4236/ampc.2015.55016.
language
English
LU publication?
yes
id
c2dd7a80-2b84-4400-88ad-bb10ee58d48d (old id 5366425)
date added to LUP
2015-09-21 15:08:01
date last changed
2016-04-15 22:16:59
@article{c2dd7a80-2b84-4400-88ad-bb10ee58d48d,
  abstract     = {Rare Earth Elements are in growing demand globally. This paper presents a case study of applied mathematical modeling and multi objective optimization to optimize the separation of heavy Rare Earth Elements, Terbium-Lutetium, by means of preparative solid phase extraction chromatography, which means that an extraction ligand, HDEHP, is immobilized on a C18 silica phase, and nitric acid is used as an eluent. An ICP-MS was used for online detection of the Rare Earths. A methodology for calibration and optimization is presented, and applied to an industrially relevant mixture. Results show that Thulium is produced at 99% purity, with a productivity of 0.2 - 0.5 kg Tm per m3 stationary phase and second, with Yields from 74% to 99%.},
  author       = {Max-Hansen, Mark and Knutson, Hans-Kristian and Jönsson, Christian and Degerman, Marcus and Nilsson, Bernt},
  issn         = {2162-5328},
  keyword      = {Rare Earth Elements,Chromatography,Model Calibration,Optimization,Multi-Objective,HDEHP},
  language     = {eng},
  number       = {5},
  pages        = {151--160},
  publisher    = {Scientific Research},
  series       = {Advances in Materials Physics and Chemistry},
  title        = {Modeling Preparative Chromatographic Separation of Heavy Rare Earth Elements and Optimization of Thulium Purification},
  url          = {http://dx.doi.org/10.4236/ampc.2015.55016.},
  volume       = {5},
  year         = {2015},
}