Solid-liquid extraction of zinc with calcium phosphate materials.

摘要

In this study,zinc was extracted from a diluted solution using two calcium phosphate materials.The kinetic analysis has shown that the extraction equilibrium is very rapid for these two materials.The extraction yield was found to increase with the solution pH.The total purification of a 6.5-ppm Zn solution was realized using 60 mg of SAP1 and SAP2.The extraction selectivity follows a Cd > Zn > Co order.