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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 4    August 2006

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Microbial leaching of marmatite by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans
WANG Jun(王 军), QIU Guan-zhou(邱冠周),
QIN Wen-qing(覃文庆), ZHANG Yan-sheng(张雁生)

School of Resources Processing and Bioengineering, Central South University,
Changsha 410083, China

Abstract: The bioleaching of marmatite in shaken flasks was studied. After leaching for 29 days, the leaching ratio of zinc was 91%. Three kinds of bacteria, mixture-based bacteria, 9K-based bacteria and sulfur-based bacteria were used in marmatite leaching, of which the mixture-based bacteria have the best leaching result while the sulfur-based bacteria have the worst. By analyzing the leaching residue using SEM and EDXA, the marmatite leaching mechanism was discussed.

 

Key words: marmatite; bioleaching; leaching ratio; Acidithiobacillus ferrooxidans; Acidithiobacillus thiooxidans

ISSN 1672-7029
CN 43-1423/U

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