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Nanofiltration-enhanced solvent extraction of scandium from TiO acid waste
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Publikationsdatum
2022-04-27
Autor:innen
Yagmurlu, Bengi
Huang, Danyu
von Arx, Oliver
Dittrich, Carsten
Constable, Edwin C.
Friedrich, Bernd
Hedwig, Sebastian
Lenz, Markus
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American Chemical Society
Zusammenfassung
Scandium is a critical raw material with a technological potential to reduce transportation costs and CO2 emissions. However, global supply and market adoption are crucially impaired by the lack of high-grade Sc ores and recovery strategies. A tandem nanofiltration solvent extraction route is demonstrated to enable effective Sc recovery from real-world acid waste from the chloride TiO2 production route. The process involving several filtration stages, solvent extraction, and precipitation was optimized, ultimately producing >97% pure (NH4)3ScF6.
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YAGMURLU, Bengi, Danyu HUANG, Oliver VON ARX, Carsten DITTRICH, Edwin C. CONSTABLE, Bernd FRIEDRICH, Sebastian HEDWIG und Markus LENZ, 2022. Nanofiltration-enhanced solvent extraction of scandium from TiO acid waste. ACS Sustainable Chemistry & Engineering. 27 April 2022. Bd. 10, Nr. 18, S. 6063–6071. DOI 10.1021/acssuschemeng.2c01056. Verfügbar unter: https://doi.org/10.1021/acssuschemeng.2c01056