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. 2015 Aug 12;2015:494015. doi: 10.1155/2015/494015

Figure 9.

Figure 9

Electrochemical separation of indium from a solution prepared by directly dissolving real waste material in 3 M HCl with an addition of H2O2 at 80°C (Solution 2). (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.