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Integrated process for the recovery of yttrium and europium from CRT phosphor waste

Journal Contribution - Journal Article

An integrated process flow sheet for the recovery of yttrium and europium from waste cathode-ray tube (CRT) phosphors was developed. This flow sheet is based on a sequence of roasting, leaching with organic acids and precipitation steps. Zinc was efficiently removed from the roasted CRT phosphors by leaching with acetic acid, giving access to the rare earth content. Yttrium and europium were quantitatively leached from the residue by a 1 mol L-1 methanesulphonic acid (MSA) solution. Precipitation with oxalic acid gave a mixed Y/Eu oxalate of high purity (>99 wt%). Co-precipitation of zinc was less than 2 wt%.
Journal: RSC Advances
ISSN: 2046-2069
Issue: 3
Volume: 9
Pages: 1378 - 1386
Publication year:2019
BOF-publication weight:1
CSS-citation score:1
Authors from:Higher Education