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Scandium Recovery from an Ammonium Fluoride Strip Liquor by Anti-Solvent Crystallization
Middle East Technical University.ORCID iD: 0000-0002-9379-2486
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Resource recovery.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Resource recovery.ORCID iD: 0000-0002-3239-5188
MEAB Chemie Technik GmbH.
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2018 (English)In: Metals, ISSN 2075-4701, Vol. 8, no 10Article in journal (Refereed) Published
Abstract [en]

In this study, the crystallization of scandium from ammonium fluoride strip liquor, obtained by solvent extraction, was investigated using an anti-solvent crystallization technique. Acetone, ethanol, methanol and isopropanol were added individually to the strip liquor as the anti-solvent and scandium was precipitated and obtained in the form of (NH4)3ScF6 crystals. The results show that scandium can be effectively crystallized from the strip liquor to obtain an intermediate, marketable scandium product. Yields greater than 98% were obtained using an anti-solvent to strip liquor volumetric ratio of 0.8. Acetone had the least performance at lower anti-solvent to strip liquor volumetric ratios, possibly due to its limited H bonding capability with water molecules when compared to alcohols.

Place, publisher, year, edition, pages
MDPI, 2018. Vol. 8, no 10
Keywords [en]
scandium; anti-solvent precipitation; solvent extraction
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-235543DOI: 10.3390/met8100767ISI: 000448658700031Scopus ID: 2-s2.0-85054647374OAI: oai:DiVA.org:kth-235543DiVA, id: diva2:1251998
Funder
EU, Horizon 2020, 730105
Note

QC 20181008

Available from: 2018-09-28 Created: 2018-09-28 Last updated: 2018-11-16Bibliographically approved

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Kaya, ŞerifPeters, Edward MichaelForsberg, KerstinFriedrich, Bernd
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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • de-DE
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