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Recovery of Valuable Metals from Spent Alkaline Manganese Batteries using Sulfuric Acid  

Shin, Shun-Myung (Korea Institute of Geoscience & Mineral Resources, Minerals and Materials Processing Division)
Kang, Jin-Gu (Korea Institute of Geoscience & Mineral Resources, Minerals and Materials Processing Division)
Sohn, Jeong-Soo (Korea Institute of Geoscience & Mineral Resources, Minerals and Materials Processing Division)
Yang, Dong-Hyo (Korea Institute of Geoscience & Mineral Resources, Minerals and Materials Processing Division)
Publication Information
Applied Chemistry for Engineering / v.17, no.5, 2006 , pp. 517-520 More about this Journal
Abstract
The leaching behaviors of zinc and manganese oxides of spent alkaline manganeses battery in sulfuric acid solution by using $H_{2}O_{2}$ as a reducing agent were investigated according to the concentration of $H_{2}SO_{4}$, temperature, reaction time, and the amount of $H_{2}O_{2}$. The experimental results of zinc and manganeses dissolution rates obtained without a reducing agent at 100 g/L solid/liquid ratio, 3.0 M $H_{2}SO_{4}$, $60^{\circ}C$ and 200 r.p.m. were 97.7% and 43.5%, respectively. On the other hand, zinc and manganeses dissolution rates obtained by adding 30 mL reducing agent at $60^{\circ}C$ were 99.6% and 97.1%, respectively. The addition of the reducing agent increased the leaching of manganese by two-fold compared to the absence of a reducing agent. In case of adding over 30 mL $H_{2}O_{2}$, however, the leaching rates of zinc and manganeses were independent of reducing agent amounts.
Keywords
leaching behavior; spent alkaline manganeses battery; sulfuric acid; $H_{2}O_{2}$; zinc and manganeses;
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Times Cited By KSCI : 3  (Citation Analysis)
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