Separation of Cobalt and Copper Using Two Different Polyamine Composites in Tandem Columns

Separation of Cobalt and Copper Using Two Different Polyamine Composites in Tandem Columns 

Section III.A discussed how WP-1 and WP-2 could be used as metal ion chromatographic materials. Given the selectivity of CuWRAM for copper, we thought that the use of this resin in a tandem column composed of WP-2 could be used to separate more effectively this metal from other transition metals. To test this hypothesis we obtained a sample of a copper solvent extraction waste stream from a chal-cocite (Cu2S)/cobaltite (CoAsS) ore leach from a mine in the United States. The iron in the leach had been removed by precipitation before the copper solvent extraction and contained significant amoimts of copper and cobalt as well as arsenic. The goal was to separate the cobalt from the copper and to reject the arsenic. 

---