CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Linking leach chemistry and microbiology of low-grade copper ore bioleaching at different temperatures
Jia, Yan1,2; Sun, He-yun1,2; Tan, Qiao-yi1,2; Gao, Hong-shan3; Feng, Xing-liang3; Ruan, Ren-man1,2
2018-03-01
Source PublicationINTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN1674-4799
Volume25Issue:3Pages:271-279
AbstractThe effects of temperature on chalcocite/pyrite oxidation and the microbial population in the bioleaching columns of a low-grade chalcocite ore were investigated in this study. Raffinate from the industrial bioleaching heap was used as an irrigation solution for columns operated at 20, 30, 45, and 60A degrees C. The dissolution of copper and iron were investigated during the bioleaching processes, and the microbial community was revealed by using a high-throughput sequencing method. The genera of Ferroplasma, Acidithiobacillus, Leptospirillum, Acidiplasma, and Sulfobacillus dominated the microbial community, and the column at a higher temperature favored the growth of moderate thermophiles. Even though microbial abundance and activity were highest at 30A degrees C, the column at a higher temperature achieved a much higher Cu leaching efficiency and recovery, which suggested that the promotion of chemical oxidation by elevated temperature dominated the dissolution of Cu. The highest pyrite oxidation percentage was detected at 45A degrees C. Higher temperature resulted in precipitation of jarosite in columns, especially at 60A degrees C. The results gave implications to the optimization of heap bioleaching of secondary copper sulfide in both enhanced chalcocite leaching and acid/iron balance, from the perspective of leaching temperature and affected microbial community and activity.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1007/s12613-018-1570-2
Indexed BySCI
Language英语
WOS KeywordACID-MINE DRAINAGE ; SP-NOV. ; SULFIDE ; PYRITE ; ACIDOPHILES ; OXIDATION ; BACTERIA ; IRON ; PH ; BIOOXIDATION
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
Funding OrganizationNational Natural Science Foundation of China(41401541 ; Bureau of International Co-operation, Chinese Academy of Sciences(122111KYSB20150013) ; 51674231 ; 51474075)
WOS IDWOS:000426597200003
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24033
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Wanbao Min Ltd, Beijing 100053, Peoples R China
Recommended Citation
GB/T 7714
Jia, Yan,Sun, He-yun,Tan, Qiao-yi,et al. Linking leach chemistry and microbiology of low-grade copper ore bioleaching at different temperatures[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2018,25(3):271-279.
APA Jia, Yan,Sun, He-yun,Tan, Qiao-yi,Gao, Hong-shan,Feng, Xing-liang,&Ruan, Ren-man.(2018).Linking leach chemistry and microbiology of low-grade copper ore bioleaching at different temperatures.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,25(3),271-279.
MLA Jia, Yan,et al."Linking leach chemistry and microbiology of low-grade copper ore bioleaching at different temperatures".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 25.3(2018):271-279.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jia, Yan]'s Articles
[Sun, He-yun]'s Articles
[Tan, Qiao-yi]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jia, Yan]'s Articles
[Sun, He-yun]'s Articles
[Tan, Qiao-yi]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jia, Yan]'s Articles
[Sun, He-yun]'s Articles
[Tan, Qiao-yi]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.