The feasibility of processing low-grade copper-nickel ores by heap bioleaching was investigated. It found that an iron-oxidizing strain acidophilic microorganisms, Acidithiobacillus ferrivorans, is effective in the leaching sulfide from deposits Russia’s Murmansk region. Sulfide mineralization studied mineral feeds described using methods X-ray phase analysis and optical microscopy. In process ...

in this study, effects of solid concentration, temperature, and initial fe2+ concentration on bioleaching of sulfide mineral (chalcopyrite) obtained from sarcheshmeh copper mine in the region of kerman located in the south of iran were investigated. a mesophilic iron oxidizing bacterium, acidithiobacillus ferrooxidans has been isolated from a typical chalcopyrite copper concentrate of the menti...

bioleaching is the extraction of metals from their ores through the use of microorganisms. inthis process, the use of native bacteria leads to achieve more yields of metals. so, in the presentstudy, native sulfur-oxidizing bacterium in potentiality of uranium extraction was isolated fromghachin mine in iran and identified by partial gene sequencing. for this purpose, the watersamples were colle...

Colemanite is one of the most important underground riches of Turkey, having approximately 60% of the world boron deposits, and it has a large portion in the deposits. In this study, chemical leaching and biological leaching methods were used for production of boric acid from colemanite (2CaO · 3B3O3 · 5H2O) (Emet-Kütahya, Turkey). Oxalic acid concentration, temperature, stirring time and solid...

The Interoceanmetal Joint Organization’s (IOM) exploration license is granted in the area located within Clarion–Clipperton Zone of Eastern Central Pacific. All activities related to minerals this are beyond limits national jurisdiction and come under provision United Nations Convention on Law Sea regulations. geological survey, which was subject exploration, focused polymetallic nodule deposit...

• Bioleaching is good at deep As removal from regenerated product of spent SCR catalyst. results in a maximum 53.1% high pulp density 10%. Corresponding residue 174 mg/kg below limiting value 200 attained. Strong activation occurs by bioleaching along with removal. Cells secrete an amount cysteine accounting for and activation. Selective catalytic reaction (SCR) widely used flue gas denitrifica...

We announce here the genome sequence of a marine acidophilic sulfur-oxidizing bacterium, Acidithiobacillus sp. strain SH. The bacterium has potential for use in bioleaching of sulfide ores from seawater and contains a noble gene for thiosulfate quinone oxidoreductase in addition to specific genes for the oxidation of reduced inorganic sulfur compounds.

The genomic features of the Leptospirillum ferriphilum type strain DSM 14647 are described here. An analysis of the predicted genes enriches our knowledge of the molecular basis of iron oxidation, improves our understanding of its role in industrial bioleaching, and suggests how it is adapted to live at extremely low pH.