Leaching of Cu from malachite using Fe2(SO4)3 solution as the leaching agent

Preparation of nano gold powder from acid leaching tail solution

According to the unique properties and many applications of nano gold powder, it was prepared from an acid leaching tail solution. The low value residual gold ions existed in acid leaching tail solution in Mouteh gold mine in Iran with fellow heavy metals as pollutants (Fe2+, Cu2+, and Zn2+). Preparation of nano gold particles is achieved by two steps: First, by addition of ammonia as separatio...

Preparation of nano gold powder from acid leaching tail solution

According to the unique properties and many applications of nano gold powder, it was prepared from an acid leaching tail solution. The low value residual gold ions existed in acid leaching tail solution in Mouteh gold mine in Iran with fellow heavy metals as pollutants (Fe2+, Cu2+, and Zn2+). Preparation of nano gold particles is achieved by two steps: First, by addition of ammonia as separatio...

Leaching of Zinc Oxide in Acidic Solution

Leaching mechanism of zinc oxide is important not only to understand zinc smelting process but also to develop of new zinc recycling process. Recycling of zinc is mainly done by treatment of electric arc furnace dust (EAF dust). In Japan pyro metallurgical process is enhanced for EAF dust treatment, however only zinc oxide can be recovered by pyro metallurgical process. Hydro metallurgical proc...

Leaching of Mercury from Solids

Fig. 1. An engineering technologist sets up an apparatus in which PCB-contaminated liquid will be exposed to chemicals which remove the chlorine from the compound, transforming the PCBs into non-regulated chemicals. Base-catalyzed destruction (BCD) of polychlorinated biphenyls (PCBs) is a process in which the halogen molecules on PCBs are replaced with aliphatic hydrocarbons (or in some cases h...

Leaching from Biomass Combustion Ash