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

<div>XRD spectrum (—) of leaching residue (pH 1, sulfuric acid) compared to XRD spectrum of nonleached starting material (- - -). Chemical compounds are represented as follows: Bi<sub>2</sub>O<sub>3</sub> (◆), Zn<sub>2.33</sub>Sb<sub>0.67</sub>O<sub>4</sub> (□), and Zn<sub>7</sub>Sb<sub>2</sub>O<sub>12</sub> (■).</div>

The Scientific World Journal

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Figure 8

Figure 8: Investigations into Recycling Zinc from Used Metal Oxide Varistors via pH Selective Leaching: Characterization, Leaching, and Residue Analysis 

Figure 8 | Investigations into Recycling Zinc from Used Metal Oxide Varistors via pH Selective Leaching: Characterization, Leaching, and Residue Analysis 