Electrochemistry of Thiobacillus ferrooxidans reactions with pyrite
The present investigation is a part of our studies on the electrochemical aspects of pyrite bioleaching involving Thiobacillus ferrooxidans. Previously we have examined the effect of T. ferrooxidans and their metabolic products on the redox reactions of Fe{sup 2+}/Fe{sup 3+} couple at the pyrite surface. Results obtained suggest that beyond 1.5 days during their growth in a batch fermenter, the bacteria and their metabolic products completely cover the pyrite surface and shut down all electron transfer across the electrode-solution interface. In addition, it has been observed that the bacteria serve as the nucleation site for jarosite formation, which is found detrimental to bioleaching. In the present work we have focused on the effect of the presence of vitamins on the redox chemistry of iron. To date, we have examined the effect of the presence of thiamine pyrophosphate in the redox behavior of Fe{sup 2+}/Fe{sup 3+} at the pyrite surface. The results are described herein.
- Research Organization:
- Idaho Univ., Moscow, ID (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-88PC88920
- OSTI ID:
- 5312532
- Report Number(s):
- DOE/PC/88920-T15; ON: DE92015489
- Country of Publication:
- United States
- Language:
- English
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Electrochemistry of Thiobacillus ferrooxidans reactions with pyrite
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Related Subjects
59 BASIC BIOLOGICAL SCIENCES
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COAL
DESULFURIZATION
PYRITE
BIODEGRADATION
ELECTROCHEMISTRY
IRON COMPOUNDS
PHOSPHATES
PROGRESS REPORT
REDOX REACTIONS
SURFACE PROPERTIES
THIAMINE
THIOBACILLUS FERROXIDANS
AMINES
AZINES
AZOLES
BACILLUS
BACTERIA
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
MATERIALS
MICROORGANISMS
MINERALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PYRIMIDINES
SULFIDE MINERALS
SULFUR-OXIDIZING BACTERIA
THIAZOLES
TRANSITION ELEMENT COMPOUNDS
VITAMIN B GROUP
VITAMINS
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400400 - Electrochemistry