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LIXIVIACION BACTERIANA DEL ORO PDF

Mineralogía del proceso de lixiviación de oro en minerales refractarios con soluciones Mineralogia dos processos de oxidacao sobre pressao e bacteriana do. La Lixiviación Bacteriana puede ser definida como un proceso natural de disolución que resulta de la acción de un grupo de bacterias. LIXIVIACIÓN BACTERIANA ALUMNA: Rodríguez Narváez Marycielo Kriss PROFESORA: Montoya Cantoral Elisa CARRERA:Operaciones.

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Bioleaching of minerals-a valide alternative for developing countries. Alterations in surfaces y textures of minerals during the bacterial leaching of a complex sulfide ore. Solid-phase alteration y iron transformation in column bioleaching of a complex sulfide ore. Environmental Geochemistry of sulfide oxidation.

ACS Symposium Series American Chemical Society, Washington. Role y contribution of pure y mixed cultures of mesophiles in bioleaching of a pyritic chalcopyrite concentrate. Microbial leaching in environmental clean-up.

Metal extraction by bacterial oxidation. Present y future commercial applications of biohydrometallurgy. Biooxidation-heap concept for pretreatment of liixviacion gold ore. The surface composition of arsenopyrite exposed to oxidizing environments. Biodesulfurization of two Colombian coals with native microorganisms. Solid-phase products of bacterial oxidation of arsenopyrite. Characterization of arsenopyrite oxidizing Thiobacillus.

Tolerance to arsenite, arsenate, ferrous y ferriciron. Arsenopyrite oxidation — A review. Acta 72, ; — Characterization of a natural y an electro-oxidised arsenopyrite: Kinetics y mechanism of the bacterial y ferric sulphate oxidation of galena. Recent advances in refractory gold processing.

Chromosomally encoded arsenical resistance of the moderately thermophilic acidophile Acidithiobacillus caldus. Characteristics of attachment y growth of Thiobacillus caldus on sulphide minerals: A new look at microbial leaching patterns on sulfide minerals. Oxidation of arsenopyrite FeAsS in acid part I: Stoichiometry y reaction scheme.

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Evolution of the bacteria population during the batch bioleaching of a cobaltiferous pyrite in a suspended-solids bubble colum y comparison with a mechanically agitated bactdriana. Universidade Estadual do Sao Paulo.

Liixiviacion economics of bacterial oxidation y roasting as a pre-treatment step lixiviqcion gold recovery from na auriferous pyrite concentrate. Mineralogical y textural characterization of lime roasted pyrite y arsenopyrite for gold leaching. Toxicity of arsenic during high temperature bioleaching of gold-bearing arsenical pyrite. Adhesion to metal sulfide surfaces by cells lixoviacion Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans y Leptospirillum ferrooxidans.

Importance of microbial ecology in the development of new mineral technologies.

Metalurgistas e Ingenieros de Procesamiento de Minerales

Biological pre-oxidation to enhance gold y silver recovery from refractory pyritic ores y concentrates. Pyrite oxidation y reduction: Molecular orbital theory considerations. Geochimica et Cosmochimica Acta. Brasilia, ; p. The chemistry of gold extraction.

Ellis Horwood Limited, England. Acta 65, b p. Bacteria y the breakdown of sulfide minerals. Microbial Mineral Recovery, Ehrlich, H. McGraw Hill, New York, ; p.

ATP requeriments for growth y maintenance of iron-oxidizing bacteria. Pristine y reacted surfaces of pyrrhotite y arsenopyrite as studied by X-ray absorption near-edge structure spectroscopy.

P, Oxidation of arsenopyrite y deposition of gold on the oxidised surfaces: A scanning probe microscopy, tunnelling spectroscopy y XPS study. Acta 70, p — Aqueous pyrite oxidation by dissolved oxygen y ferric iron. Acta 51, ;p. Long-term bacterial oxidation pilot plant operation at Mintek y Vaal Reefs.

Oxidation states y speciation of secondary products on pyrite y arsenopyrite reacted with mine waste waters y air. Oxidation of arsenopyrite by air y airsaturated, distilled water y implications for mechanisms of oxidation. Geomicrobiology of sulfide mineral oxidation.

Mineralogical Society of America. Bioleaching review part B: The molecular genetics of Thiobacillus ferrooxidans y other mesophilic, acidophilic, chemolithotrophic, iron or sulfur oxidizing bacteria. Heavy metal mining using microbes. Characteristics y adaptability of iron — y sulfur — oxidizing microorganisms used for the recovery of metals from minerals y their concentrates. Mag 53, bacteruana. Acta 67, p. The sulfane sulfur of persulfides is the actual substrate of the sulfur-oxidizing enzymes from Acidithiobacillus y Acidiphilium spp.

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The cell attachment y oxygen consumption of two strains of Thiobacillus ferrooxidans. Sulfur chemistry, y the In direct attack mechanism- a critical evalution of bacterial leaching. Applied Microbiology y Biotechnology. Raman study of the microbially mediated dissolution of pyrite by Thiobacillus ferrooxidans. Colloids y Surfaces, A: Physicochemical y Engineering Aspects. Applied y Environmental Microbiology.

Applied y environmental Microbiology. Intermediary sulfur compounds in pyrite oxidation: Implications for bioleaching y biodepyritization of coal.

Arsenic y selenium in microbial metabolism. Glutathione y sulfur oxidation by Thiobacillus thiooxidans. The autotrophic oxidation of iron by a new bacterium: Oxidative dissolution of arsenopyrite by mesophilic y moderately thermophilic acidophiles.

Mechanisms of bacterial oxidation of the copper sulphide mineral, covellite. Studies on the electrochemical mechanism of bacterial catalysis in pyrite dissolution.

Rates of reaction of pyrite y marcasite with ferric iron at pH 2. Acta 48, ;p. The kinetics y electrochemical rate determining step of aqueous pyrite oxidation.

Metalurgistas e Ingenieros de Procesamiento de Minerales

Acta 58, ;p. A kinetic study of the oxidation of arsenopyrite bacterizna acidic solutions: Microbial leaching of metals from sulfide minerals.

Servicio de ayuda de la revista. How do bacteria interact with minerals?. Biotechnology in the Mining Industry. Microbial desulphurization of coal.