E-waste Gold Extraction Breakthrough
This is a Australia news story, published by ScienceDaily, that relates primarily to Flinders University news.
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This breakthrough turns old tech into pure gold — No mercury, no cyanide, just light and salt
74% Informative
Flinders University in Australia has developed a safer and more sustainable approach to extract and recover gold from ore and electronic waste.
The new process uses a low-cost and benign compound (trichloroisocyanuric acid) to extract the gold.
When activated by salt water, the reagent can dissolve gold.
The gold can then be recovered by triggering the polymer to " un -make" itself and convert back to monomer.
The team plans to work with mining and e-waste recycling operations to trial the method on a larger scale.
Electronic waste is one of the fastest growing solid waste streams in the world.
In 2022 , an estimated 62 million tonnes of e-waste was produced globally.
Miners use mercury, which binds to gold particles in ores, to create what are known as amalgams.
These are then heated to evaporate the mercury, leaving behind gold but releasing toxic vapours.
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