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Bioleaching of Electronic Scrap using Thiobacillus ferrooxidans
In order to recover valuable metals from a waste electronic scrap, we investigated the bioleaching of Cu, Zn, Al, Co, Ni, Sn and Pb using Thiobacillus ferrooxidans as leaching microorganism in a shaking flask. In a preliminary study, in order to obtain the data on the leaching of Cu, Zn, Al, Co and Ni, the metal leaching behaviors were accomplished using metal powders instead of electronic scrap. As the increase of metal powder concentration in solution, the leaching percentages of Cu, Zn, Co, Al, Ni powders were reduced. At the metal concentrations of 1.0 and 5.0g/L, more than 85% of Cu, Co and Zn powders were leached out. At the electronic scrap concentration of 100g/L, Thiobacillus ferrooxidans were able to leach more than 90% of the available Cu, Co. But Al, Zn and Ni were able to leach less than 40%. No Pb and Sn were detected in the leachate. Pb was precipitated as PbSO4, whereas Sn precipitated probably as SnO.
Bioleaching of Electronic Scrap using Thiobacillus ferrooxidans
In order to recover valuable metals from a waste electronic scrap, we investigated the bioleaching of Cu, Zn, Al, Co, Ni, Sn and Pb using Thiobacillus ferrooxidans as leaching microorganism in a shaking flask. In a preliminary study, in order to obtain the data on the leaching of Cu, Zn, Al, Co and Ni, the metal leaching behaviors were accomplished using metal powders instead of electronic scrap. As the increase of metal powder concentration in solution, the leaching percentages of Cu, Zn, Co, Al, Ni powders were reduced. At the metal concentrations of 1.0 and 5.0g/L, more than 85% of Cu, Co and Zn powders were leached out. At the electronic scrap concentration of 100g/L, Thiobacillus ferrooxidans were able to leach more than 90% of the available Cu, Co. But Al, Zn and Ni were able to leach less than 40%. No Pb and Sn were detected in the leachate. Pb was precipitated as PbSO4, whereas Sn precipitated probably as SnO.
Bioleaching of Electronic Scrap using Thiobacillus ferrooxidans
Ahn, Jae-Woo (author) / Jeong, Jinki (author) / Lee, Jae-Chun (author) / Kim, Dong-Gin (author) / Ahn, Jong-Gwan (author)
Geosystem Engineering ; 8 ; 63-70
2005-09-01
8 pages
Article (Journal)
Electronic Resource
Unknown
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