Summary #1178

New polymer easily captures gold extracted from e-waste

arstechnica.com
  • The polymer is made from an organic compound called porphyrin, and it’s kind of a sponge with little pores that attract metal atoms.
  • When electronic junk is treated with acid, a porphyrin polymer collects metals, and it seems that gold is it’s favorite metal.
  • Researchers tested this method with several circuit boards from a junkyard.
  • It resulted in a solid gold nugget that accounted for 94% of the gold from the circuit boards.
  • With $5 production cost per gram of the polymer, and $64 gold yield per gram, this method might revolutionise the way we recycle electronics.

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