SMRTR Science & EngineeringSep 30, 2025Interesting Engineering

Ultrafast flash heating recovers rare earths from electronic waste with 90% yield

SMRTR summary

Rice University researchers developed a revolutionary method using flash Joule heating and chlorine gas to extract rare earth elements from electronic waste magnets in just seconds, achieving over 90% purity and yield. The breakthrough eliminates water and acids from the recycling process while reducing energy use by 87%, greenhouse gas emissions by 84%, and operating costs by 54% compared to traditional methods.

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