Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11033275 | Waste Management | 2018 | 5 Pages |
Abstract
LaPO4:Ce,Tb (LAP) containing high terbium concentration was successfully recovered from waste phosphor from end-of-life fluorescent lamps by high-gradient magnetic separation (HGMS). In addition to HGMS, some contaminants in the waste phosphor, e.g., iron oxide and glass powder, were also removed by sieving and sedimentation. Repeating the magnetic separation procedure three times yielded LAP with a purity of 87%. Luminescence spectra intensities of recovered LAP were as high as 95% compared with virgin LAP. This recovery method will be useful during rare-earth crises.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geotechnical Engineering and Engineering Geology
Authors
Masaru Yamashita, Tomoko Akai, Masaki Murakami, Tatsuya Oki,