Dataset Information

The shift of microbial communities and their roles in sulfur and iron cycling in a copper ore bioleaching system.

ABSTRACT: Bioleaching has been employed commercially to recover metals from low grade ores, but the production efficiency remains to be improved due to limited understanding of the system. This study examined the shift of microbial communities and S&Fe cycling in three subsystems within a copper ore bioleaching system: leaching heap (LH), leaching solution (LS) and sediment under LS. Results showed that both LH and LS had higher relative abundance of S and Fe oxidizing bacteria, while S and Fe reducing bacteria were more abundant in the Sediment. GeoChip analysis showed a stronger functional potential for S0 oxidation in LH microbial communities. These findings were consistent with measured oxidation activities to S0 and Fe2+, which were highest by microbial communities from LH, lower by those from LS and lowest form Sediment. Moreover, phylogenetic molecular ecological network analysis indicated that these differences might be related to interactions among microbial taxa. Last but not the least, a conceptual model was proposed, linking the S&Fe cycling with responsible microbial populations in the bioleaching systems. Collectively, this study revealed the microbial community and functional structures in all three subsystems of the copper ore, and advanced a holistic understanding of the whole bioleaching system.

SUBMITTER: Niu J

PROVIDER: S-EPMC5048113 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature

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The shift of microbial communities and their roles in sulfur and iron cycling in a copper ore bioleaching system.

Niu Jiaojiao J Deng Jie J Xiao Yunhua Y He Zhili Z Zhang Xian X Van Nostrand J D JD Liang Yili Y Deng Ye Y Liu Xueduan X Yin Huaqun H

Scientific reports 20161004

Bioleaching has been employed commercially to recover metals from low grade ores, but the production efficiency remains to be improved due to limited understanding of the system. This study examined the shift of microbial communities and S&Fe cycling in three subsystems within a copper ore bioleaching system: leaching heap (LH), leaching solution (LS) and sediment under LS. Results showed that both LH and LS had higher relative abundance of S and Fe oxidizing bacteria, while S and Fe reducing ba ...[more]

PMID: 27698381

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Dataset Information

The shift of microbial communities and their roles in sulfur and iron cycling in a copper ore bioleaching system.

Publications

The shift of microbial communities and their roles in sulfur and iron cycling in a copper ore bioleaching system.

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