bioleaching

(redirected from Bacterial leaching)
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Related to Bacterial leaching: Bioleaching

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 ?
Dugan, Metallurgical Applications of Bacterial Leaching and Related Microbiological Phenomena.
Several researchers studied the role of the galvanic interaction between chalcopyrite and pyrite during bacterial leaching of low-grade wastes, which led to corrosion of chalcopyrite and passivation of pyrite leaching.
Enami contributed the property rights and Pudahuel the bacterial leaching technology.
Metal solubilization, applying bacteria Acidithiobacillus spp is being done for the recovery of copper and uranium by heap, dump and in situ leach techniques on a commercial scale, It is estimated that around 35 % oftotal copper is obtained through bacterial leaching processes.
Keywords: Bacterial Leaching, Thiobacillius ferrooxidans, Hematite, Reduction.
Furthermore, bacterial leaching in clay topsoils could be accentuated in summer by formation of shrinkage cracks (Jiang et al.
Chile state copper corporation Codelco and London-based mining and metals house Billiton have formalised their agreement to set up Alliance Copper, a new company to develop and commercialise bacterial leaching technology for processing copper and molybdenum ores and concentrates (MM, April, p.222).
Other processes receiving attention are bacterial leaching, roast-leach, and chloride leaching, especially for dirty or low-grade sulphide concentrates.
has recently completed a scoping study of the viability of bacterial leaching of concentrate from its Vizcachitas copper-molybdenum porphyry project in Chile.
Certainly, the bacterial leaching trials have indicated that the process works, but the question is whether any field problems will be encountered that didn't appear in the laboratory.

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