A Strain of Acidophilus Thiobacillus and Its Application

A thermophilic thiobacillus and microbial preparation technology, applied in the field of bioengineering, can solve the problems of complex operation, poor leaching effect, and high requirements for equipment and equipment, and achieve the effects of increasing the leaching rate, improving the biological leaching process, and low requirements for equipment and equipment
CN109576173BActive Publication Date: 2020-05-08JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2020-05-08

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Abstract

The invention discloses a strain of acidophilus thermophilic thiobacterium and its application, in particular to a kind of acidophilus thermophilic thiobacterium with dual metal resistance and a method for biocatalytically leaching chalcopyrite by using the strain, which belongs to the field of bioengineering . The invention domesticates the original mesophilic acidophilic thiobacterium, continuously improves its copper-resistant performance through gradient domestication, leaches the copper-resistant strain and the original strain under different copper stress concentrations, and verifies the improvement of the leaching level of the domesticated strain under various conditions. The domesticated strains are leached in a copper stress environment, and silver ions are added to the leaching system to promote the interaction between ions, which makes the leaching system active, promotes iron-sulfur metabolism, and reduces the formation of passive film. The environment quickly adapted, and finally the copper ion leaching rate increased to 54.71%. The method is simple and easy to operate, low in cost, and suitable for large-scale popularization and application of similar bioleaching processes.
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Description

technical field

[0001] The invention relates to an acidophilus thermophilic thiobacterium and its application, in particular to an acidophilus thermophilic thiobacterium with dual metal resistance and a method for biocatalytically leaching chalcopyrite by using the strain, which belongs to the field of bioengineering. Background technique

[0002] Acidithiobacillus caldus is an obligate chemoautotrophic sulfur-oxidizing bacterium that uses the Calvin cycle to fix carbon dioxide in the air as a carbon source, and can oxidize inorganic reducing sulfides to obtain the energy and energy necessary for growth. Reducing power can effectively promote the release of metal ions, improve metallurgical efficiency, and play an important role in biometallurgy, coal desulfurization, and treatment of sulfur-containing wastewater.

[0003] Bioleaching technology refers to the release of precious and rare metal ions in minerals into the solution in the form of ions through a series of biochem...

Claims

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