Prof. Dr. Taghreed Hashim al-Noor, a lecturer from the Department of Chemistry at the College of Education for Pure & Applied Sciences (Ibn al-Haitham) at the University of Baghdad has obtained a patent from the Central Organization for Standardization and Quality Control for her study entitled (Preparation of copper sulfate from recycling the waste of solutions of factories producing precious metals) in partnership with the Prof. Ghassan Thabet Shnain.
In this research, solutions were collected from precious metal filtering plants that use royal water in their production and purification, if these solutions contain ions ((NH4 +1, NO3-, Cl-,Fe+2, Cu+2 and may contain very little ions (pd+2, pt+2, Au +3) if these solutions are placed in a plastic container with pieces of copper of various sources (scrap) and left for a period of time to dry in the sun where also the open lid pots are being exposed to atmospheric air, so if the solutions oxidize additional amounts of copper metal in the form of (cu +2, cu +1) and the presence of an ion, Fe+3 acts as an auxiliary oxidation medium copper metal here and when a state of saturated solution of copper chloride CuCl2 is reached it is heated to a temperature of (400C).
