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[3K0501-07-04] Enhanced cementation of Zn, Co, and Ni from sulfate solution using aluminum and activated carbon powders

○Sanghyeon Choi¹, Sanghee Jeon¹, Ilhwan Park¹, Mayumi Ito¹, Naoki Hiroyoshi¹ (1. Hokkaido University)

The chairman: Naoko OKIBE (Kyushu University)

Keywords:Cementation, Aluminum, Activated carbon, Heavy metal ions

Cementation of zinc (Zn), cobalt (Co), and nickel (Ni) from sulfate solution was investigated at different pH using aluminium as a reductant and activated carbon as a promotor. The results showed that cementation did not occur when using aluminum solely, while cementation occurred when using aluminium and activated carbon together. The results of SEM-EDX, XPS, and AES analysis for Zn cemented product showed that Zn was deposited on activated carbon attached on aluminum surface in the form of element and oxide.