earticle

영어

Precious metals are widely being used in various industries because of their specific physical and chemical properties. Conventional methods for the recovery of low concentrations of the dissolved precious metal ions from solution phases include solvent extraction, chemical precipitation and ion exchange. These methods have significant disadvantages, including incomplete metal recovery, high capital costs, high reagent and energy requirements, and other waste products that require disposal. Such disadvantages, along with the increasing demand for new and economic processes for the recovery of metal ions from industrial effluents, have resulted in the investigation of alternative separation technologies. In this talk, sorption-based recovery of precious metals is introduced and the required specification of sorbents is discussed. Especially, strategies for design of powerful sorbents are suggested with some successful application cases.