· The gold ore concentrate was sterilized by autoclaving before leaching experiments (121 °C for 20 min). Shredded ewaste (highgrade printed circuit boards) was sourced from Total Green Recycling in Perth, Western Australia. The shredded ewaste was pulverized with Essa ® LM5 mill (FM, Denmark) at Nagrom, Western Australia.
Ore treatment hydrogen peroxide during heap leaching of gold. Among these methods, the use of hydrogen peroxide to accelerate the leaching of gold is known . Hydrogen peroxide was mainly used for detoxifiion of waste water and neutralization of waste heaps  and for oxidation during intensive cyanidation of gold . Inquire Now