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