Researchers Develop Simple Method To Extract Gold From Old Phones

London: Hundreds of tonnes of gold could be recovered from old electronic devices such as smartphones, TV sets and computers each year, thanks to a simple chemical method developed by researchers. Current methods for extracting gold from old gadgets are inefficient and can be hazardous to health, as they often use toxic chemicals such as cyanide, researchers said. Electrical waste - including old mobile phones, televisions and comp...