CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Characterization of microbial community in industrial bioleaching heap of copper sulfide ore at Monywa mine, Myanmar
Jia, Yan1,2; Sun, Heyun1,2; Chen, Defang3; Gao, Hongshan3; Ruan, Renman1,2
2016-09-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume164Issue:SEPPages:355-361
Abstract

Microbial communities and activities in multi-lift bioleaching heap of copper sulfide ore were investigated at Monywa copper mine, Myanmar. The high-throughput sequencing method revealed a microbial community dominated by archaeal Ferroplasma (about 70%), rather than more commonly reported genera of Acidithiobacillus and Leptospirillum (together about 25% in Monywa heap). Multi-lift stacking operation without heap aeration resulted in low oxygen concentrations in the heaps (leachate oxygen concentration of 0.35 mg L-1 to 0.68 mg L-1). Therefore, low oxygen concentrations, high organic matter concentrations and moderate temperature in the heaps favored the growth of versatile Ferroplasma which can both undergo autotrophic and heterotrophic growth. Total cell number in the irrigation solution and leachate was in the range of 4.86-8.80 x 106 mL(-1), and the detected microbes in ore residues and leaching solutions were mainly those with iron-oxidizing ability. Their iron-oxidizing rate showed highest at the temperature of 35 degrees C, while in heaps may be limited by the low oxygen supply. Monywa bioleaching system with the above mentioned microbial community and activity formed a leaching solution of low redox potential, resulting in appropriate pyrite oxidation during chalcocite dissolution, thus helped maintain relatively stable acid and iron concentration in the cycling leaching solution. This study explained the formation of the microbial community and activity in Monywa heap leaching, linking to its heap physical and chemical conditions, and suggested that the role of Ferroplasma in bioleaching system may have been overlooked previously, especially in oxygen-limited bioleaching heaps. (C) 2016 Elsevier B.V. All rights reserved.

KeywordCopper Sulfide Ferroplasma High-throughput Sequencing Microbial Community Multi-lift Heap Bioleaching
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.hydromet.2016.07.007
Indexed BySCI
Language英语
WOS KeywordPYRITE OXIDATION ; DISSOLVED-OXYGEN ; FERROUS IRON ; LOW PH ; MICROORGANISMS ; DRAINAGE ; BACTERIA ; TEMPERATURE ; DIVERSITY ; CHEMISTRY
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China(41401541) ; Youth Foundation of Key Laboratory of Green Process and Engineering, Chinese Academy of Sciences ; Bureau of International Co-operation, Chinese Academy of Sciences(122111KYSB20150013)
WOS IDWOS:000381949900044
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21308
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
3.Wanbao Min Ltd, Beijing 10053, Peoples R China
Recommended Citation
GB/T 7714
Jia, Yan,Sun, Heyun,Chen, Defang,et al. Characterization of microbial community in industrial bioleaching heap of copper sulfide ore at Monywa mine, Myanmar[J]. HYDROMETALLURGY,2016,164(SEP):355-361.
APA Jia, Yan,Sun, Heyun,Chen, Defang,Gao, Hongshan,&Ruan, Renman.(2016).Characterization of microbial community in industrial bioleaching heap of copper sulfide ore at Monywa mine, Myanmar.HYDROMETALLURGY,164(SEP),355-361.
MLA Jia, Yan,et al."Characterization of microbial community in industrial bioleaching heap of copper sulfide ore at Monywa mine, Myanmar".HYDROMETALLURGY 164.SEP(2016):355-361.
Files in This Item:
File Name/Size DocType Version Access License
Characterization of (483KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jia, Yan]'s Articles
[Sun, Heyun]'s Articles
[Chen, Defang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jia, Yan]'s Articles
[Sun, Heyun]'s Articles
[Chen, Defang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jia, Yan]'s Articles
[Sun, Heyun]'s Articles
[Chen, Defang]'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.