![Shredded circuit boards.](https://resource-recycling.com/e-scrap/wp-content/uploads/sites/2/2019/08/shredded-circuitboards-20190814-By-Dominic-Warren-shutterstock_1188783364-web.jpg)
Researchers found unique interactions between graphene and gold ions yield exceptional selectivity in extraction from e-scrap. | Dominic Warren/Shutterstock
A cutting-edge method of recovering gold from solutions works without energy inputs, lab testing found.