The Scientific World Journal / 2015 / Article / Fig 4

Research Article

Investigations into Recycling Zinc from Used Metal Oxide Varistors via pH Selective Leaching: Characterization, Leaching, and Residue Analysis

Figure 4

The leached fraction as given by the left ordinate for zinc (), bismuth (○), and antimony (∆) from MOV in (a) pH 1, (b) pH 3, and (c) pH 5 solutions. The volume of hydrochloric acid (HCl) added is shown as a solid black line corresponding to the right ordinate.
(a) pH 1
(b) pH 3
(c) pH 5