Spent platinum catalyst is recovered from corrugated stainless steel by chemical stripping and recovery. The process is completed by placing the material in lined tanks filled with hydrochloric acid (HCl). Approximately 500 pounds of corrugated stainless steel with platinum coating was inserted into a HCl leaching bath. Prior to starting the process, the supervisor tested the material for reactivity for a period of one hour, and the material showed very little reactivity. Operators began setting up three 500-gallon tanks, each containing the corrugated material. The material was covered with water and 4-5 inches of HCl was then added to the tank. When all three tanks were set up and there was only minimal reactivity observed (occasional bubbles), the operators left the area.
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