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影响因子：2.917

DOI码：10.1016/S1003-6326(21)65617-0

所属单位：中南大学

发表刊物：TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA

摘要：The column bioleaching of copper flotation tailings was comparatively investigated using layered heap construction method (LM), agglomerate heap construction method (AM), and pellets-sintering heap construction method (PM). The bacterial communities of free, attached, weakly-attached, and strongly-attached microbes in the later bioleaching stage were investigated. In AM group, the addition of lump sulphide ore resulted in the low leachate pH, high ferric iron concentration, and rapid microbial adsorption, which obtained the maximum copper extraction (60.1%) compared with LM (54.6%) and PM (43.9%) groups. The relative abundance of dominant genera and microbial communities of different microbiota underwent changes in three heap construction methods. The alpha-diversity indexes of attached, weakly-attached, and strongly-attached microbes were different, while no significant change was observed in free bacteria. The variation of whole bacterial community was significantly associated with solution pH, total iron, and ferric iron concentrations. Pearson correlation analysis and partial least square path model both indicated that attached bacteria made larger contribution to the extraction of tailings.

合写作者：Xueduan Liu, Ping Zhu, Yili Liang, Guanzhou Qiu, Hongqing Ma, Liying Ren, Sarkodie Emmanuel Konadu, Hongwei Liu*

第一作者：Xiaodong Hao

论文类型：期刊论文

文献类型：J

卷号：31

期号：6

页面范围：1796-1805

ISSN号：1003-6326

是否译文：否

发表时间：2021-06-16

收录刊物：SCI