Investigation of an Electrochemical Method for Separation of Copper, Indium, and Gallium from Pretreated CIGS Solar Cell Waste Materials

Figure 7

Electrochemical separation of indium from the synthetic solution containing copper(II), indium(III), and gallium(III) in 1 M HCl (Solution 1). (a) The metal concentration in the solution relative to the original concentration as a function of time. (b) The current passed though the circuit as a function of time.

(a)

(b)