Research on increase of number of thiobacillus ferrooxidans and thiobacillus thiooxidans in percolated water of the open pit

Author(s):  
S. Davaanyam ◽  
Ts. Tsend-Ayush ◽  
J. Bayarsaihan ◽  
P. Monkhtuya ◽  
Kh. Oyuntungalag ◽  
...  
2000 ◽  
Vol 90 (1) ◽  
pp. 115-117
Author(s):  
DONG WON KIM ◽  
KEE HANG SON ◽  
YOUNG HUN JANG ◽  
TAE SEUNG KIM ◽  
NAM JUN CHO ◽  
...  

1995 ◽  
Vol 41 (6) ◽  
pp. 508-514 ◽  
Author(s):  
Oswaldo Garcia Jr. ◽  
Olli H. Tuovinen ◽  
Jerry M. Bigham

The objective of this work was to determine solution- and solid-phase alterations associated with galena (PbS) oxidation by Thiobacillus ferrooxidans and Thiobacillus thiooxidans. In T. ferrooxidans experiments with 2.5–5% (w/v) galena, the pH remained almost constant at pH 2, whereas the pH increased in uninoculated controls. In T. thiooxidans cultures, the pH initially increased from 2 to 4. This initial increase was comparable to the pH change in an abiotic control, but the oxidation reaction in T. thiooxidans cultures subsequently became acid producing. Anglesite (PbSO4) was detected by X-ray diffraction as a solid-phase product of galena decomposition in both abiotic and inoculated experiments. When ferrous sulfate was added as a supplementary energy source for T. ferrooxidans, jarosite (MFe3(SO4)(OH)6) was detected as a new solid phase. Elemental S was not detected in the residues.Key words: anglesite, bioleaching of galena, galena oxidation, jarosite, lead sulfide oxidation, Thiobacillus ferrooxidans, Thiobacillus thiooxidans.


2000 ◽  
Vol 90 (1) ◽  
pp. 115-117 ◽  
Author(s):  
Dong Won Kim ◽  
Kee Hang Son ◽  
Young Hun Jang ◽  
Tae Seung Kim ◽  
Nam Jun Cho ◽  
...  

2001 ◽  
Vol 37 (2) ◽  
pp. 111-114 ◽  
Author(s):  
Maria E.A.G Oprime ◽  
Oswaldo Garcia ◽  
Arnaldo A Cardoso

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