A cleaner, greener way extracts gold from mounting piles of e-waste in addition to ore. Using a compound found in pool disinfectants and a reusable novel polymer, the method avoids toxic chemicals like mercury and cyanide. It also works on trace gold in scientific waste. Tested on everything from circuit boards to mixed-metal ores, this offers a promising solution to both the global gold rush and growing e-waste crisis.
www.sciencedaily.com/releases/2025/06/250626081540.htm