Extracting precious zinc from waste ash

Incineration of solid waste produces millions of tons of waste fly ash in Europe annually; most ends up in landfill. But this ash often contains significant amounts of precious metals such as zinc. Researchers at Chalmers University of Technology, Sweden, have developed a method to extract these precious metals, potentially leading to reductions in environmental pollution, landfill and transport.

from Phys.org - latest science and technology news stories https://ift.tt/38a9P7B

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