期刊
BIORESOURCE TECHNOLOGY
卷 249, 期 -, 页码 146-153出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.10.016
关键词
Low grade copper sulfide; Bioleaching; Microbial dynamics; pH
资金
- Scientific Research Program of Marine Public Welfare Industry of China [201205020]
- National Nature Science Foundation of China [51074195]
The microbial diversity and dynamics in the leachates and on the ore surfaces of different depth of the column were analyzed during bioleaching of low grade copper sulfide at different pH, after inoculation with the same inoculum containing mesophiles and moderate thermophiles. The results indicate that low pH was beneficial to enhance copper extraction. The highest copper extraction (86%) was obtained when pH was controlled at 1.0-1.5. The microbial structures on the ore surfaces were independent of community structures in the leachate, even at the top portion of column. Microbial richness and evenness increased with decreasing pH during bioleaching. pH had significant effects on microbial community structure in the leachate and on the mineral surface of different depth of the column. Leptospirillum ferriphilum accounted for the highest proportions of the community at most times when pH was operated during bioleaching, especially at the end of run.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据