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Recovery of scandium from acidic waste solutions by means of polymer inclusion membranes

Hedwig, Sebastian and Kraus, Manuel and Amrein, Meret and Stiehm, Johannes and Constable, Edwin C. and Lenz, Markus. (2022) Recovery of scandium from acidic waste solutions by means of polymer inclusion membranes. Hydrometallurgy, 213. p. 105916.

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Official URL: https://edoc.unibas.ch/89667/

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Abstract

Scandium is a raw material with properties that promise considerable potential for application in alloys to enable aviation fuel savings and as dopants for use in sustainable energy production using solid oxide fuel cells. Despite these attractive properties, scandium is rarely used due to its scarcity and unreliable supply. Therefore, new strategies for scandium recovery are of economic priority. In this study, polymer inclusion membranes (PIMs) consisting of PVDF-HFP, 2-NPOE and DEHPA, were optimised for selective scandium separation from real TiO2 production waste. With the optimised system, >60% of the scandium was recovered with high selectivity, resulting in scandium mole fraction at more than two orders of magnitude higher in the receiving phase than in the original waste. This suggests PIMs may be an effective way to recover scandium from bulk waste, thus easing the scarcity and insecurity that currently limit its bulk application.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
UniBasel Contributors:Constable, Edwin Charles
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:0304-386X
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
edoc DOI:
Last Modified:25 Aug 2022 06:13
Deposited On:25 Aug 2022 06:13

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