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Scientist finds non-toxic solution to gold mining



Researchers at Finland’s Aalto University suggests a gold extraction alternative to avoid toxic chemicals.


The new chloride-based method calls electrodeposition-redox replacement (EDRR). Chloride is one of two elements in table salt, separate the gold from the ore into the leachate. Combined with electrolysis, which uses electric currents to reduce gold or other metals present in the leaching solution.


The amount of gold we’ve been able to recover using chloride is as high as 84 percent, which yields 20 percent more than the traditional standard cyanide process. The high output comes with low emissions. “The method has low energy consumption and doesn’t require the addition of any other elements,” Ivan Korolev, the researcher said.

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