Reducing Hazardous Waste During Gold Recovery

Scientists recently discovered an inexpensive and environmentally benign method that uses simple cornstarch  to isolate gold from raw materials. Gold is typically recovered from mined ore and waste materials, including electronic waste, using highly poisonous cyanide to convert gold into a water-soluble coordination complex through a process known as leaching. However,  this process poses a risk to workers and the environment. This  new corn starch-based process could offer a greener and cheaper alternative to conventional processes.