Microfluidic solvent extraction of rare earth elements
© 2016 TAPPI Press. All rights reserved. This paper reports solvent extraction of rare earth elements (REEs) carried out using a microfluidic device and considers the REE loading limit of the organic phase under laminar flow. The microfluidic device contacts aqueous and organic phase streams for a p...
| Main Authors: | , , , , , , , |
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| Format: | Conference Paper |
| Published: |
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/68741 |
| _version_ | 1848761878755409920 |
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| author | Kriel, F. Kolar, E. Sedev, Rossen Catthoor, R. Middlemas, S. Klier, E. Hatch, G. Priest, C. |
| author_facet | Kriel, F. Kolar, E. Sedev, Rossen Catthoor, R. Middlemas, S. Klier, E. Hatch, G. Priest, C. |
| author_sort | Kriel, F. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2016 TAPPI Press. All rights reserved. This paper reports solvent extraction of rare earth elements (REEs) carried out using a microfluidic device and considers the REE loading limit of the organic phase under laminar flow. The microfluidic device contacts aqueous and organic phase streams for a precisely defined contact time (sub-second resolution) and then separates them for offline analysis. Experiments are reported examining the effect of contact time on extraction. We focus on three REEs: one ‘light’ (Nd), one ‘mid’ (Dy), and one ‘heavy’ (Yb) REE, which are extracted using Cyanex®572. It appears that loading limits may be locally exceeded in the organic phase near to the liquid-liquid interface, where third phase deposits are observed. Third phase formation was also observed close to the liquid-liquid interface in two-dimensional confinement, showing similar third phase adsorption on glass plates. It is also shown that, under microfluidic flow, a typical first ‘split’ between heavy REEs and light REEs can be carried out without exceeding loading limits. |
| first_indexed | 2025-11-14T10:38:40Z |
| format | Conference Paper |
| id | curtin-20.500.11937-68741 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:38:40Z |
| publishDate | 2016 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-687412018-06-29T12:27:01Z Microfluidic solvent extraction of rare earth elements Kriel, F. Kolar, E. Sedev, Rossen Catthoor, R. Middlemas, S. Klier, E. Hatch, G. Priest, C. © 2016 TAPPI Press. All rights reserved. This paper reports solvent extraction of rare earth elements (REEs) carried out using a microfluidic device and considers the REE loading limit of the organic phase under laminar flow. The microfluidic device contacts aqueous and organic phase streams for a precisely defined contact time (sub-second resolution) and then separates them for offline analysis. Experiments are reported examining the effect of contact time on extraction. We focus on three REEs: one ‘light’ (Nd), one ‘mid’ (Dy), and one ‘heavy’ (Yb) REE, which are extracted using Cyanex®572. It appears that loading limits may be locally exceeded in the organic phase near to the liquid-liquid interface, where third phase deposits are observed. Third phase formation was also observed close to the liquid-liquid interface in two-dimensional confinement, showing similar third phase adsorption on glass plates. It is also shown that, under microfluidic flow, a typical first ‘split’ between heavy REEs and light REEs can be carried out without exceeding loading limits. 2016 Conference Paper http://hdl.handle.net/20.500.11937/68741 restricted |
| spellingShingle | Kriel, F. Kolar, E. Sedev, Rossen Catthoor, R. Middlemas, S. Klier, E. Hatch, G. Priest, C. Microfluidic solvent extraction of rare earth elements |
| title | Microfluidic solvent extraction of rare earth elements |
| title_full | Microfluidic solvent extraction of rare earth elements |
| title_fullStr | Microfluidic solvent extraction of rare earth elements |
| title_full_unstemmed | Microfluidic solvent extraction of rare earth elements |
| title_short | Microfluidic solvent extraction of rare earth elements |
| title_sort | microfluidic solvent extraction of rare earth elements |
| url | http://hdl.handle.net/20.500.11937/68741 |