What are the Methods for Recycling Spent Catalysts?
Recycling spent catalysts can be achieved through various methods:
Hydrometallurgical processes: Involve leaching metals from the spent catalysts using acid or base solutions followed by precipitation or solvent extraction to recover valuable metals. Pyrometallurgical processes: Use high temperatures to melt and separate metals from the spent catalysts. This method is energy-intensive but effective for recovering metals like platinum and palladium. Biometallurgical processes: Utilize microorganisms to leach metals from spent catalysts. This method is environmentally friendly but still under development for large-scale applications.
