Bioleaching of metals from electronic scrap and its potential for commercial exploitation
This study is undertaken to evaluate the potential of mixed metal adapted consortium of moderate thermophiles to solubilize metals from electronic scrap in shake flasks and in lab scale column reactor level. At scrap concentration of 10 g/L, a mixed consortium of the metal adapted cultures was able to leach more than 80％ of Ni, 85％ of Cu, 75％ of Al and 80％ of Zn. In the study of column bioleaching the tolerance of bacterial cultures to mixed metal ions ( Al3 + , Cu2 + , Fe3 + , Ni + , Pb2 + and Zn2 + ) has been improved markedly after nearly two year adaptation from 12 g/L to 20 g/L. The results from this study demonstrated that more than 75％ Zn, 60％ Al, 82％ Cu and Ni 70％ can be recovered from electronic scrap by microbial leaching process using mixed adapted consortium of moderately thermophilic bacteria at column bioleaching level and about 4％ Al, 6％ Zn, 5％ Cu and 7％ Ni can be leached out during preleaching. This finding may be facilitated on industrial scale implementation of this process for recycling of metals from electronic scrap.
bioleaching electronic scrap mixed consortium moderate thermophiles
Sadia llyas Ruan Chi
Hubei Key Laboratory of Novel Reactor & Green Chemical Technology, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, 430073, Wuhan, China
国际会议
The 19th International Biohydrometallurgy Symposium(第19届国际生物湿法冶金大会 IBS2011)
长沙
英文
774-781
2011-09-18（万方平台首次上网日期，不代表论文的发表时间）