Extraction of Zinc and Manganese from Alkaline and Zinc-Carbon Spent Batteries by Citric-Sulphuric Acid Solution

Figure 3

Zinc and manganese extraction yields versus time profiles during exhaust battery powder leaching by sulphuric acid solution in the presence of citric acid as reducing agent (temperature 80^∘C). See Table 1 for experimental conditions (continuous lines are related to treatments with 10% powder, dotted lines to treatments with 20% powder).

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