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Bioleaching of metals from electronic scrap and its potential for commercial exploitation

机译：电子废料中金属的生物浸出及其商业开发潜力

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摘要

In this study, ability of moderately thermophilic bacterial consortium to extract metals from electronic scrap was evaluated using shake flasks and lab-scale column reactor. We investigated the effects of having additional energy source (FeS_2, S°, FeS_2+S°), using different consortia of moderately thermophilic bacteria and washing charge material as a pretreatment At scrap concentrations of 10%, an adapted consortium of Sulfobacillus thermosulfidooxidans and Thermoplasma acidophilum extracted approximately 85% of Cu, 75% of Al, 80% of Ni and 80% of Zn from pretreated electronic scrap with FeS_2+S° (1%). However, a consortium of S. thermosulfidooxidans and Sulfobacilllus addophilus, containing FeS_2 + S°, extracted 90% of Cu, 80% of Al, 82% of Ni and 85% of Zn. During column bioleaching studies of 165 days, approximately 74% Zn, 68% Al, 85% Cu, 78% Ni was leached out. The results of the leaching process are significant for understanding how to implement these processes on an industrial scale.
机译：在这项研究中，使用摇瓶和实验室规模的柱反应器评估了适度嗜热细菌财团从电子废料中提取金属的能力。我们研究了使用其他嗜温细菌菌群和洗涤装料作为预处理的补充能源（FeS_2，S°，FeS_2 + S°）的影响在废料浓度为10％时，由适应性的嗜热硫氧化硫杆菌和嗜热嗜热菌组成的菌群嗜酸菌从具有FeS_2 + S°（1％）的预处理电子废料中提取了约85％的Cu，Al的75％，Ni的80％和Zn的80％。然而，含有FeS_2 + S°的热硫链球菌和嗜热嗜热链球菌的联合体提取了90％的铜，80％的铝，82％的镍和85％的锌。在165天的柱生物浸出研究期间，浸出了约74％的Zn，68％的Al，85％的Cu，78％的Ni。浸出过程的结果对于理解如何在工业规模上实施这些过程具有重要意义。

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