Patent ID: 6342462
Filing Date: 2002-01-29
Classification: B01D,B01J

Abstract:
A process for regenerating an adsorbent which is at least partially spent, the adsorbent comprising a solid carrier, a reactive metal dispersed thereon, and a reaction product of the reactive metal and a contaminant, the process comprising:(a) stripping the adsorbent with a stripping solution comprising an aqueous solution of an alkai metal compound of an anion selected from the group consisting of thiosulfate, cyanide, iodide, and mixtures thereof a stripping conditions, thereby removing at least a portion of the reaction product and yielding a stripped absorbent and an effluent stream containing the reaction product; and (b) reactivating the stripped absorbent with a reactivation solution of a compound of the reactive metal at reactivation conditions, thereby dispersing an effective amount of reactive metal onto the absorbent.