Peer, Michael and Fehn, Thomas and Hofmann, Alexander and Berninger, Burkhard and Kunz, Werner (2025) Recycling of Critical Metals from Light-Emitting Diodes. CHEMIE INGENIEUR TECHNIK, 97 (1-2). pp. 110-115. ISSN 0009-286X, 1522-2640
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Light-emitting diodes (LED) are widely used for energy savings. A lot of different materials and especially metals are needed to produce LED. End-of-life LED contain critical metals like indium or rare earth elements. In this study, first a thermochemical step is used to recover the critical metal indium from LED with hydrochloric acid-containing vapor from polyvinyl chloride as chlorine source. Then, the LED residue is leached with sulfuric acid and hydrogen peroxide. From the leachate, the heavy rare earth element lutetium can be extracted with n-octanol and tributyl phosphate.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | POTENTIAL ENVIRONMENTAL IMPACTS; INDIUM ARSENIDE; WASTE; RECOVERY; GALLIUM; TOXICITY; Chemical recycling; Critical metals; LED; PVC waste; Rare earth elements |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > Prof. Dr. Werner Kunz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 Mar 2026 10:41 |
| Last Modified: | 17 Mar 2026 10:41 |
| URI: | https://pred.uni-regensburg.de/id/eprint/64612 |
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