Influence of Static Sorption Parameters on the Recovery of Precious Metals from Wastes of the Refining Processes
Karolina Goc, Grzegorz Benke, Joanna Kluczka, Karolina Pianowska, Joanna Malarz, Michał Babiński, Katarzyna Leszczyńska-Sejda
Abstract
High Resolution Image Download MS PowerPoint Slide Precious metals have been considered critical materials by the European Union for many years, which is why the recovery of these metals is so important for the sustainable development of the European economy. Therefore, this paper investigates the possibilities of recovering precious metals (platinum, palladium, rhodium, and gold) using an ion exchange method from a technological solution obtained during the leaching of wastes of the refining processes. During the research, a static method was used, which allowed us to obtain basic data of the sorption and allowed us to understand how specific parameters influence the process (e.g., concentration of copper, zinc, and nitric acid and pH and temperature of the solution). The experiments showed that the resins Puromet MTS9200, Puromet MTS9850, and Lewatit MonoPlus MP600 can be used to recover precious metals from solutions containing them at low concentrations. Puromet MTS9200 should not be used for solutions containing high concentrations of copper, and Puromet MTS9850 should not be used for solutions containing high concentrations of HNO 3 and high pH. In the case of Lewatit MonoPlus MP600, the solution should be neutralized before the process to increase the sorption of rhodium, even to efficiencies above 90%.