Facebook post by University of Helsinki

Researchers have succeeded in using an organic solvent to extract gold from scrapped electronics such as computers and phones. The amount of gold in these devices may be up to 10-100 times that of ore and usually it has ended up being burned along with the scrapped devices.
Gold from scrap electronics | University of Helsinki helsinki.fi

Urban mining: With the help of a new solvent method, the gold can be extracted from recycled materials in a more eco-friendly way.