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dc.contributor.authorYurramendi, Lourdes
dc.contributor.authorGijsemans, Lukas
dc.contributor.authorForte, Federica
dc.contributor.authorAldana, Jose Luis
dc.contributor.authordel Río, Carmen
dc.contributor.authorBinnemans, Koen
dc.date.accessioned2019-05-15T15:13:55Z
dc.date.available2019-05-15T15:13:55Z
dc.date.issued2019-08
dc.identifier.citationYurramendi, Lourdes, Lukas Gijsemans, Federica Forte, Jose Luis Aldana, Carmen del Río, and Koen Binnemans. “Enhancing Rare-Earth Recovery from Lamp Phosphor Waste.” Hydrometallurgy 187 (August 2019): 38–44. doi:10.1016/j.hydromet.2019.04.030.en
dc.identifier.issn0304-386Xen
dc.identifier.urihttp://hdl.handle.net/11556/714
dc.description.abstractIn the present work rare-earth recovery was performed from a residue of a hydrometallurgical process based on sulphuric acid leaching of lamp phosphor waste by which the red phosphor Y2O3:Eu3+ was removed for further recovery. The undissolved residue is rich in lanthanum, cerium and the valuable terbium, present as phosphates and aluminates in the green and blue phosphors. The process here proposed is based on an integrated pyro-hydrometallurgical approach involving a thermal treatment (roasting in the presence of sodium carbonate) aimed at converting rare-earth phosphates into oxides, which can be more easily leached by mineral acids (HCl and H2SO4) in a further leaching step. Rare-earth recovery from the leachate was then performed by solvent extraction with the extractant di-(2-ethylhexyl)phosphoric acid, D2EHPA, followed by precipitation with oxalic acid and calcination. 82% Ce, 75% La and 82% Tb were recovered as mixed La2O3 + CeO2 oxide (99% purity) and Tb4O7 (64% purity).en
dc.description.sponsorshipThis work has received funding from the European Union's Horizon2020 research and innovation programme under Grant Agreement No.680629 (REMAGHIC: New Recovery Processes to produce Rare Earth-Magnesium Alloys of High Performance and Low Cost) (project website:http://www.remaghic-project.eu/). The authors acknowledge Relightsrl for providing the lamp phosphor powder.en
dc.language.isoengen
dc.publisherElsevieren
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleEnhancing rare-earth recovery from lamp phosphor wasteen
dc.typearticleen
dc.identifier.doi10.1016/j.hydromet.2019.04.030en
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/680629/EU/New Recovery Processes to produce Rare Earth -Magnesium Alloys of High Performance and Low Cost/REMAGHICen
dc.rights.accessRightsopenAccessen
dc.subject.keywordsRare-earth recoveryen
dc.subject.keywordsLamp phosphor wasteen
dc.subject.keywordsSodium carbonate roastingen
dc.subject.keywordsSolvent extractionen
dc.journal.titleHydrometallurgyen
dc.page.final44en
dc.page.initial38en
dc.volume.number187en


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