A company that wants to extract gold from piles of decades-old mining waste outside Leadville no longer plans to use cyanide ...

Extracting gold from electronic waste is a complex and often hazardous process that uses harmful chemicals such as nitric and hydrochloric acids and cyanide solutions to strip away the plastic and ...

pure gold appears on graphene sheets, with no other chemicals or energy input involved. After this you can extract your pure gold by simply burning the graphene off. The research, published in Nature ...

have improved the efficiency of extracting gold from electronic waste, according to a new study in the Chemical Engineering Journal. This method achieved a gold recovery efficiency of almost 100 ...

During the washing process, various chemicals, including mercury and cyanide, are used to help extract the gold from the soil, polluting big and small rivers. Highlighting the dangers of this ...