The Scientific World Journal / 2015 / Article / Tab 2

Research Article

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

Table 2

Percentage of minor metals coleached with zinc in pH 5 leaching solutions.

Acid CoMnNi

74.5 ± 0.423.4 ± 0.119.6 ± 0.3
HCl72.6 ± 5.523.1 ± 2.918.5 ± 0.9
HNO363.3 ± 0.719.7 ± 0.317.0 ± 0.2
H2SO466.4 ± 3.527.1 ± 5.024.8 ± 4.6