Recovery of Europium from E-Waste Using Redox Active Tetrathiotungstate Ligands

11 December 2023, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Rare-earth elements, indispensable to our modern economy, are challenging to purify due to their chemical similarities. Here we introduce a strategy to recycle europium from e-waste, leveraging the redox non-innocence of tetrathiotungstate ligands, achieving its selective separation from energy-saving lamps under ambient conditions with separation factors uover 1000 and recovery efficiency as high as 99%, without pre-treatment of the waste.

Keywords

Europium recycling
tetrathiotunsgtate
redox-non innocent ligand
Rare-earth element separation
internal-induced electron transfer

Supplementary materials

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Supporting video
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Video illustrating the Eu extraction process from a compact fluorescent lamp
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Supplementary information
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Supplementary information
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