Alteration of Mica and Feldspar Associated with the Microbiological Oxidation of Pyrrhotite and Pyrite

Bhatti, Tariq M.; Bigham, Jerry M.; Vuorinen, Antti; Tuovinen, Olli H.

doi:10.1021/bk-1994-0550.ch008

Cited by 20 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Iron oxidation in the inoculated culture could also be inferred from the decrease in the concentration of dissolved K + . This decreased reflected K-jarosite precipitation which is the predominant solid phase of Fe(III) at this pH value (9,12). With S° amendment, inoculation of T. ferrooxidans 1830 BHATTI ET AL.…”

Section: Resultsmentioning

confidence: 95%

“…Thiobacillus ferrooxidans (strain TFI-35) was grown in mineral salts media (0.5 g (NH4) 2 SO 4; 0.5 g K 2 HP0 4 , and 0.5 g MgSO 4 -7H 2 O per liter; initial pH 1.8 adjusted with H2SO4) at 22±2°C as previously described (8,9). The media were supplemented with Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…Solids were separated by centrifugation, and solution (supernatant) samples were preserved with HC1 for analysis of dissolved constituents. Dissolved metals and partial chemical composition of the mineral samples were measured with inductively coupled plasma (ICP) emission spectrometry as previously described (9,10). The mineralogical composition of the ground samples was determined with X-ray diffraction (XRD).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Acid dissolution of uranophane and carnotite

Bhatti

Vuorinen

Lehtinen

et al. 1997

Journal of Environmental Science and Health . Part A: Environme

Self Cite

View full text Add to dashboard Cite

Uranium dissolution from rock samples containing uranophane or carnotite was tested in acid mineral salts solutions in the presence and absence of Fe-and Soxidizing bacteria (Thiobacillus ferrooxidans) and with FeSO 4 or S 0 as the substrate.The addition of FeSO 4 enhanced the solubilization of uranium from uranophane. S 0 -amendment was also effective, because uranium solubilization was enhanced at low pH resulting from the bacterial oxidation of S 0 . Uranium was readily dissolved from carnotite.However, the carnotite-containing rock sample was predominantly composed of calcite that excessively consumed acid, increasing the pH and thereby reducing the concentration of uranium dissolved in leach solution. § Present address:

show abstract

Section: Resultsmentioning

confidence: 95%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Acid dissolution of uranophane and carnotite

Bhatti

Vuorinen

Lehtinen

et al. 1997

Journal of Environmental Science and Health . Part A: Environme

Self Cite

View full text Add to dashboard Cite

show abstract

“…The evolution of H 2 S gas could be noticed during the initial stages of pyrrhotite bioleaching (Ahonen and Tuovinen, 1994), likely indicative of a non-oxidative dissolution process as shown by reaction (1). Elemental sulphur could be detected with pyrrhotite dissolution in the presence or absence of bacteria (Bhatti et al, 1994). The presence of jarosite and iron oxyhydroxides occurring as goethite with traces of ferrihydrite was confirmed in an Ontario mine tailings impoundment (Johnson et al, 2000).…”

Section: Oxidation Of Pyrrhotite and Oxidation Productsmentioning

confidence: 87%

A review on pyrrhotite oxidation

Belzile

Chen

Cai

et al. 2004

Journal of Geochemical Exploration

272

151

View full text Add to dashboard Cite

“…Jarosites can act as sinks for monovalent cations in the interlayer positions of micas during weathering and bioleaching situations. This effect leads to mica alterations that can proceed as far as vermiculite or smectite formation (Bhatti et al, 1994;Bigham et al, 2001), thereby impacting the permeability of leach beds.…”

Section: Introductionmentioning

confidence: 99%