Investigation of Fluoride Tolerance in Acidithiobacillus ferrooxidans

Jie Meng Tao; Li Yuan Ma; Chong Qin; Hua Qun Yin; Yi Li Liang; Guan Zhou Qiu; Xue Duan Liu

doi:10.4028/www.scientific.net/SSP.262.452

Paper Titles

EPS Characterization of a Cell Wall-Lacking Archaeon Ferroplasma acidiphilum
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Metagenome-Derived Draft Genome Sequence of Acidithiobacillus ferrooxidans RV1 from an Abandoned Gold Tailing in Neuquén, Argentina
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Phage Display - A Promising Tool for the Recovery of Valuable Metals from Primary and Secondary Resources
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Simplified Expression and Production of Small Metal Binding Peptides
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Investigation of Fluoride Tolerance in Acidithiobacillus ferrooxidans
p.452

Potential Bioleaching Effects in In Situ Recovery Applications
p.456

Identification of Sulfur Activation Relevant Protein Genes of Extremely Thermophilic Acidianus manzaensis
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Evolution of Compositions and Contents of Capsule and Slime EPSs for Adaptation to and Action on Energy Substrates and Heavy Metals by Typical Bioleaching Microorganisms
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Resistance of Moderately Thermophilic Acidophilic Microorganisms to Ferric Iron Ions
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HomeSolid State PhenomenaSolid State Phenomena Vol. 262Investigation of Fluoride Tolerance in...

Investigation of Fluoride Tolerance in Acidithiobacillus ferrooxidans

Abstract:

Anionic ion species occur in gangue minerals and impact the bioleaching efficiency even at low concentrations. Recently, the detrimental influence of fluoride ions on bioleaching microorganisms has caused great attention in research. However, the tolerance mechanisms of bioleaching microorganisms for fluoride are still unclear. In order to reveal fluoride tolerance, culture experiments with different concentrations of fluoride and ferrous iron-grown Acidithiobacillus ferrooxidans were carried out. The results showed that oxidation-reduction potential, oxidation capacity of iron and cell density were all negatively correlated to the fluoride concentration. The growth of A. ferrooxidans showed a longer delayed time and a slower growth rate when fluoride concentration increased. The fluoride tolerance for A. ferrooxidans could be attributed to the generated ferric ions from ferrous oxidation. Ferric ions reacted with HF to decrease the concentration of F^- and finally reduced the toxicity of fluoride on A. ferrooxidans.

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Solid State Phenomena (Volume 262)

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452-455

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.262.452

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Online since:

August 2017

Authors:

Jie Meng Tao, Li Yuan Ma, Chong Qin, Hua Qun Yin, Yi Li Liang, Guan Zhou Qiu, Xue Duan Liu*

Keywords:

Acidithiobacillus ferrooxidans, Bioleaching, Fluoride Tolerance

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