|About this Abstract
||Part C-1: Hydrometallurgy 2018
||Kinetics of Arsenic Release from Orpiment
||Seyed Mohamadjavad Mirazimi, Wenying Liu
|On-Site Speaker (Planned)
||Seyed Mohamadjavad Mirazimi
Exposure of mining waste rocks containing arsenic to water and air can cause arsenic release to receiving waters and soils. preventing arsenic release from its minerals which is known as source control is the most preferable option for mining companies. To implement an appropriate source control strategy, it is necessary to have knowledge on the fundamental processes that determine the dynamics of arsenic release from its bearing minerals and waste rocks. These processes include waste rock hydrology, geochemical reactions, and microbial activities. In this research, orpiment (As2S3) which is a common arsenic mineral in gold and copper mines was used as the arsenic-bearing mineral. Concentration of dissolved oxygen, pH and temperature were considered as leaching parameters. A kinetic equation describing the effect of these parameters on arsenic release was calculated.
||Planned: At-meeting proceedings