Recovery of Metal Catalyst Public
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Sunovion Pharmaceuticals has a process in which a waste stream contains a metal in the parts per million range. This project tested and analyzed using polyethylenimine (PEI) as an effective means of increasing the concentration of the metal in solution. The testing included using PEI resin beads and measuring the concentration of the metal using inductively coupled plasma optical emission spectrometer (ICP-OES). Hydrochloric acid and water were considered to recover the rhodium from the PEI. The team came to the conclusion that PEI would not be a suitable method to recover the metal from this process and have recommended further research into alternate options.
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