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

Figure 3

The leached fraction as given by the left ordinate for zinc (), bismuth (○), and antimony (∆) from MOV in (a) pH 2, (b) pH 3, and (c) pH 5 solutions. The volume of acetic acid (HAc) added is shown as a solid black line corresponding to the right ordinate.

(a) pH 2

(b) pH 3

(c) pH 5