Because of the toxicity of selenium, its removal from waste water is a crucial treatment before discharging. Selenate (Se(VI)) and selenite (Se(IV)) are the most common species of Se in waste waters. There are many efficient methods for removal of selenite from wastewaters (e.g., ferrihydrite chemical co-precipitation, cementation, or adsorption) while the removal of selenate […]

Most of the gold that is produced by hydrometallurgical processes is recovered by cyanide leaching. However, the reactive nature of some minerals questions the applicability of cyanide technology for selected applications. The current research is designed to evaluate the cyanide technology as well as an alternative processing path for a particular material through extensive experimental […]