bioleaching


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Related to bioleaching: Phytomining

bioleaching

[¦bī·ō′lēch·iŋ]
(biochemistry)
The dissolution of metals from their mineral source by naturally occurring microorganisms. Also known as biooxidation.
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References in periodicals archive ?
thiooxidans plays a significant role in bioleaching of metals from sulphide ores [14, 17, 18].
Role of galvanic interaction in the bioleaching of Duluth-Gabbro Cu-Ni sulfides.
Together with Nippon Mining & Metals of Japan, Codelco created in 2003 Biosigma, injecting $20 million into a firm that researches new ways to use biotechnology to extract copper, a process known as bioleaching. "We hope to have the first industrial and operational stages with this new technology running by early 2010," says Ricardo Badilla, Biosigma's general manager.
Treated wood, flaked or comminuted into particles, was remediated in 12-kg batches using oxalic acid extraction, followed by bioleaching with the metal-tolerant bacterium Bacillus licheniformis.
Cheng, "SEM and AFM Images of Pyrite Surfaces after Bioleaching by Indigenous Thiobacillus thiooxidans," Appl.
In one embodiment, the metal may be separated from crushed support material or ore in a bioleaching lagoon by the action of hydrocarbon-utilizing bacteria under anaerobic conditions.
Rate of pyrite bioleaching by Thiobacillus ferrooxidans: Results of an interlaboratory comparison.
Sand W, Tilman G, Jozsa PG, Schippers A (2001) Biochemistry of bacterial leaching--direct vs indirect bioleaching. Hydrometallurgy 59, 159-175.
Bioleaching and interrelated acidophilic microorganisms from Rio Tinto, Spain.