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자료유형
학술저널
저자정보
Li, Lei (Key Laboratory of Jiangxi Province for Persistant Pollutants Control and Resources Recycle, School of Environment and Chemical Engineering, Nanchang Hangkong University) Zeng, Gui-Sheng (Key Laboratory of Jiangxi Province for Persistant Pollutants Control and Resources Recycle, School of Environment and Chemical Engineering, Nanchang Hangkong University) Luo, Sheng-Lian (Key Laboratory of Jiangxi Province for Persistant Pollutants Control and Resources Recycle, School of Environment and Chemical Engineering, Nanchang Hangkong University) Deng, Xiao-Rong (Key Laboratory of Jiangxi Province for Persistant Pollutants Control and Resources Recycle, School of Environment and Chemical Engineering, Nanchang Hangkong University) Xie, Qing-Ji (Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research [Hunan Normal University], Ministry of Education)
저널정보
한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제56권 제2호
발행연도
2013.1
수록면
187 - 192 (6page)

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The influences of solution pH and redox potential on bioleaching of $LiCoO_2$ from spent lithium-ion batteries using Acidithiobacillus ferrooxidans were investigated. Bioleaching at different initial pH and ferrous ion ($Fe^{2+}$) concentrations were carried out, and electrochemical behavior of $LiCoO_2$ dissolution was examined to study the effect of solution redox potential on the bioleaching process. The results showed maximum cobalt dissolution at initial pH of 1.5 and initial $Fe^{2+}$ concentration of 35 g/L, and cobalt dissolution showed only slight relationship with pH of solution. Nonetheless, there was improvement of cobalt dissolution at higher redox potential. The cyclic voltammograms showed that dissolution rates increase when the solution potentials are higher than 0.4 V, and rapid decrease at 1.3 V. The anodic polarization curves indicated that the corrosion, primary passive, and passivation potentials were 0.420, 0.776 and 0.802 V, respectively.

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