Researchers have developed an environmentally friendly method for recycling and purifying metals. Using gold earrings from a pawnshop in Gothenburg and biodiesel from the nearest filling station, the ...

There's treasure in trash — literally. Discarded computers, circuit boards, and other electronic waste contain valuable metals like gold. Now, breakthrough research could make extracting gold easier ...

Chalmers University researchers develop a sustainable method for gold recycling using biodiesel. The method effectively extracts pure gold from mixed metals and is applicable to other socially ...