Engineering
3 years ago

Revolutionary Method Recovers Zinc from Waste, Reducing Heavy Metal Pollution

Science of Advanced Materials
Recovery of Zinc from Municipal Solid Waste Incineration Fly Ash
Chen-Piao Yen, Yun‐Hwei Shen, Kai-Lun Chiu, Hsin‐Hsiang Huang

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Researchers developed a method to recover zinc from municipal solid waste incineration fly ash. They analyzed the properties of the ash and used water leaching, acid leaching, and ion exchange processes. By leaching with sulfuric acid, they obtained a solution containing around 1% zinc. The zinc was then concentrated using a chelating resin.