Biomineralization of Gold in Biofilms of Cupriavidus metallidurans

Biomineralization of Gold in Biofilms of Cupriavidus metallidurans
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DOI:
10.1021/es302381d
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发表时间:
2013-03-19
影响因子:
11.4
通讯作者:
Reith, F.
Reith, F.
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Fairbrother, L.;Etschmann, B.;Reith, F.

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Cupriavidus metallidurans是一种能够还原沉淀有毒的水中金(I/III)络合物的细菌,在澳大利亚金(Au)颗粒的生物膜群落中占主导地位。为了研究C. metallidurans生物膜在二次Au形成中的重要性,我们评估了生长在石英砂填充柱中的生物膜在Au(I)-硫代硫酸盐的周期性修正下的生物矿化潜力。在这些实验中,与金相比,金的含量为0.99 wt %
Cupriavidus metallidurans, a bacterium capable of reductively precipitating toxic, aqueous gold(I/III)-complexes, dominates biofilm communities on gold (Au) grains from Australia. To examine the importance of C. metallidurans biofilms in secondary Au formation, we assessed the biomineralization potential of biofilms growing in quartz-sand-packed columns to periodic amendment with Au(I)-thiosulfate. In these experiments, >99 wt % of Au, was retained compared to