Scavenging Technologies recognises the needs of the pharmaceutical industry and providing solutions to problems through innovative products and engineering options is key. A comprehensive portfolio is available including supported reagents and catalysts, PGI removal and simple, pure scavenging options
Ercros, Spain manufactured acetaldehyde via the Wacker process. This process adopts a homogeneous palladium catalyst. The customer announced that the production of acetaldehyde at their site would cease and required the palladium to be recovered. The process was carried out in a reactor that contained 30 kilograms of palladium within a solution volume of 50 metric tonnes. Due to the nature of the solution, the volume of liquid and the solids content, the reactor contents was not suitable for direct refining to recover the palladium. Smopex® was offered as a cost effective, alternative method for recovering the palladium.
The Wacker process refers to the oxidation of ethylene to acetaldehyde by oxygen in water in the presence of a palladium (tetrachloropalladate) catalyst. This process employed a homogeneous catalyst and therefore is dispersed throughout the reaction mixture and contained within the reactor itself. It had been determined that the process was no longer to be carried out, and subsequently the reactor was to be shutdown. As the reactor contained the reaction mixture, including the 30 kilograms of palladium, a recovery method for the valuable metal was needed. The entire recovery was required to take place at the customers site.
Replacement of Hydrazine Footing with Smopex" style="float:right; margin-left:10px;" />Emission Control Technologies produce a number of precious metal salts used in the manufacture of autocatalyst washcoats at their manufacturing plant in Germiston, South Africa. During the manufacture of one of these compounds, hexahydroxy platinic acid, an effluent is generated that contains residual levels of platinum. One chemical method recovery of the platinum is by chemical reduction with hydrazine, a particularly effective but toxic chemical. Although effective at recovering platinum from solution, hydrazine presents a number of health and safety issues regarding its preparation, handling and storage.