Bioleaching of Arsenic-Rich Gold Concentrates by Bacterial Flora before and after Mutation
Joint Authors
Xie, Xuehui
Liu, Na
Abdelgadir, Awad
Chen, Xiaoguang
Yuan, Xuewu
Liu, Jianshe
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-05
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
In order to improve the bioleaching efficiency of arsenic-rich gold concentrates, a mixed bacterial flora had been developed, and the mutation breeding method was adopted to conduct the research.
The original mixed bacterial flora had been enrichedin acid mine drainage of Dexing copper mine, Jiangxi Province, China.
It was induced by UV (ultraviolet), ultrasonic, and microwave, and their combination mutation.
The most efficient bacterial flora after mutation was collected for further bioleaching of arsenic-rich gold concentrates.
Results indicated that the bacterial flora after mutation by UV 60 s combined with ultrasonic 10 min had the best oxidation rate of ferrous, the biggest density of cells, and the most activity of total protein.
During bioleaching of arsenic-rich gold concentrates, the density of the mutant bacterial cells reached to 1.13×108 cells/mL at 15 days, more than 10 times compared with that of the original culture.
The extraction of iron reached to 95.7% after 15 days, increased by 9.9% compared with that of the original culture.
The extraction of arsenic reached to 92.6% after 12 days, which was increased by 46.1%.
These results suggested that optimum combined mutation could improve leaching ability of the bacterial flora more significantly.
American Psychological Association (APA)
Xie, Xuehui& Yuan, Xuewu& Liu, Na& Chen, Xiaoguang& Abdelgadir, Awad& Liu, Jianshe. 2013. Bioleaching of Arsenic-Rich Gold Concentrates by Bacterial Flora before and after Mutation. BioMed Research International،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1031155
Modern Language Association (MLA)
Xie, Xuehui…[et al.]. Bioleaching of Arsenic-Rich Gold Concentrates by Bacterial Flora before and after Mutation. BioMed Research International No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-1031155
American Medical Association (AMA)
Xie, Xuehui& Yuan, Xuewu& Liu, Na& Chen, Xiaoguang& Abdelgadir, Awad& Liu, Jianshe. Bioleaching of Arsenic-Rich Gold Concentrates by Bacterial Flora before and after Mutation. BioMed Research International. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1031155
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1031155