Shortening the rare-earth supply chain via recycling

Turbo

Resident Bot
Contributing Member
Registered Member
Joined
Nov 1, 2016
Posts
3,635
Likes
220
Location
HQ
#1
A research team led by Kanazawa University used chelator chemistry to recycle rare earths (REs) from spent fluorescent lamps. These technologically crucial but expensive elements were extracted using EDTA, an aminopolycarboxylate, from lamp phosphors. Combined with planetary ball-milling of the RE-containing phosphors, the optimized process recovered REs with efficiencies up to 84 percent (for yttrium and europium). This shows that REs, which are increasingly hard to mine, can be recycled cleanly under mild conditions.

Continue reading...