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首页> 外文会议>International conference of mechanical engineering;ICOME 2010 >MICROBIAL RECOVERY OF COPPER FROM ELECTRONIC SCRAP BY MIXED CULTURE OF MESOPHILIC BACTERIA
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MICROBIAL RECOVERY OF COPPER FROM ELECTRONIC SCRAP BY MIXED CULTURE OF MESOPHILIC BACTERIA

机译：废菌混合培养回收废铜的微生物。

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摘要

Bioleaching processes were used to mobilize metals from electronic scrap (printed circuit boards - PCBs). The bacteria Acidithiobacillus ferrooxi-dans (A. ferrooxidans) and Acidithiobacillus thiooxidans (A. thiooxidans) isolated from an acidic mine drainage were grown and acclimated in presence of PCBs and then used as bioleaching bacteria to solubilize metals from PCBs. Optimum conditions were: pH 2.3; temperature, 35 °C; and ferric iron concentration in the range of 0.004 to 0.02 M. The energies of activation were determined to be 11.7 heal (ca. 4.8×10~4 J) per mol. It is concluded that A. ferrooxidans and A. thiooxidans were able to grow in the presence of PCBs and the mixed culture of A. ferrooxidans and A. thiooxidans can not only efficiently bi-oleach the main metal copper.
机译：生物浸提工艺用于从电子废料（印刷电路板-PCB）中转移金属。从酸性矿井排水中分离出的酸性嗜酸杆菌铁氧化细菌（A. ferrooxidans）和酸性嗜酸杆菌氧化硫细菌（A. thiooxidans）在多氯联苯存在下生长并适应环境，然后用作生物浸出细菌以溶解多氯联苯中的金属。最佳条件为：pH 2.3;温度35°C;活化能被确定为每摩尔11.7 heal（约4.8×10〜4 J）。结论是：A.ferrooxidans和A.thiooxidans能够在PCBs的存在下生长，并且A.ferrooxidans和A.thiooxidans的混合培养不仅可以有效地渗出主要金属铜。

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