Occurrences at mineral-bacteria interface during oxidation of arsenopyrite by Thiobacillus ferrooxidans

Journal Article · Wed Apr 05 04:00:00 EDT 1995 · Biotechnology and Bioengineering

DOI:https://doi.org/10.1002/bit.260460103· OSTI ID:37345

Fernandez, M G.M. ^[1]; Mustin, C; Berthelin, J ^[2]; Donato, P de; Barres, O; Marion, P ^[3]

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1. Univ. Autonoma de San Luis Potosi (Mexico). Inst. de Metalurgia
2. Univ. Henri Poincare, Vandoeuvre-les-Nancy (France). Centre de Pedologie Biologique
3. I.N.P.L.-E.N.S.G., Vandoeuvre-les-Nancy (France)

The combination of an improved bacterial desorption method, scanning electron microscopy (SEM), diffuse reflectance and transmission infrared Fourier transform spectroscopy, and a desorption-leaching device like high-pressure liquid chromatography (HPLC) was used to analyze bacterial populations and surface-oxidized phases during the arsenopyrite biooxidation by Thiobacillus ferrooxidans. The bacterial distribution, the physicochemical composition of the leachate, the evolution of corrosion patterns, and the nature and amount of the surface-oxidized chemical species characterized different behavior for each step of arsenopyrite bioleaching.

• Sponsoring Organization: USDOE
• OSTI ID: 37345
• Journal Information: Biotechnology and Bioengineering, Journal Name: Biotechnology and Bioengineering Journal Issue: 1 Vol. 46; ISSN BIBIAU; ISSN 0006-3592
• Country of Publication: United States
• Language: English

Related Subjects

56 BIOLOGY AND MEDICINE
APPLIED STUDIES
ADHESION
ARSENIC
FOURIER TRANSFORM SPECTROMETERS
LIQUID COLUMN CHROMATOGRAPHY
METABOLISM
PYRITE
THIOBACILLUS FERROXIDANS