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Showing 1 to 13 of 13 for “"Acidithiobacillus"”.
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Biosolubilization of K-silicates in pelitic rock by Acidithiobacillus thiooxidans
… to solubilize minerals using the bacterium Acidithiobacillus thiooxidans. In this study, the solubilization of a potassium silicate rock, regionally known as Verdete rock (VR), was evaluated by means of a biological assay using A. thiooxidans. Erlenmeyer flasks containing 9 K medium, …
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Optimización del método de visualización de lipopolisacárido de acidithiobacillus ferrooxidans ATCC 23270 por medio de electroforesis en genes de poliacrilamina
Acidithlobacitus ferrooxidans es una bacteria Gram-negativa quimiolitotrofica que participa en el consorcio bacteriano de biolixivacion de minerales. La adherencia de los microorganismos al mineral es determinante en la eficiencia del mecanismo directo de biolixivacion. Existen antecedentes que …
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The development of a mathematical model for the bioextraction of the critical raw material magnesium from mine waste using acidithiobacillus caldus
… with the extracted microbial growth kinetics for Acidithiobacillus (At.) caldus, formed the basis of the bioleaching model. Both batch and continuous flow reactor systems were investigated for their suitability and performance in magnesium recovery. The system was optimised using a pH control …
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Oxygen and sulfur isotope fractionation by acidithiobacillus ferrooxidans during aerobic and anaerobic oxidation of copper sulfide minerals under simulated acid mine drainage conditions
Includes bibliographical references (pages 86-94).
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Estudio de procesos para la solubilización y precipitación de iones metálicos contaminantes mediante bacterias azufre-oxidantes y sulfatoreductoras
… are the most important, in particular, the genus Acidithiobacillus . Besides, these bacteria can reduce Cr(VI) to Cr(III) a more stable and less toxic heavy metal ion.The bioprecipitation allows the transformation of soluble metallic compounds in other insoluble and more stable compounds. …
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Insights into communities, metabolic and ecological potential of the bacteria of two extreme acidic environments
… sediments wasdominated by a single species of Acidithiobacillus ferrivorans SH11, constituting morethan 73% of the 16S rRNA gene amplicons. The site was characterized by low microbialcell count and lithoautotrophic metabolism, centered on iron and sulfur oxidation andCO 2 fixation via the …
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Kombination der mikrobiologischen Prozesse Bioleaching und saure Phosphorrückgewinnung sowie ihr Einsatz im Rahmen von Dekontamination und Rohstoffrückgewinnung aus schwermetall-belasteten Feststoffen
… into biomass by newly AEDS bacterial consortium (Acidithiobacillus enriched digested sludge) is an alternative technique to common physical/chemical processes. The biotechnological process combination is geared to the enhanced biological phosphorus removal (EBPR) in the waste water treatment. In …
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Biooxidation and Thiocyanate Leaching of Refractory Gold Ore in One-Step
… by combining acidic biooxidation (a mixture of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans) and acidic thiocyanate leaching in one system to avoid neutralization and minimize the complexity of the process. Furthermore, thiocyanate leaching …
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An investigation into the use of batch experiments in the determination of the kinetics of ferrous-iron oxidation by Leptospirillum ferrooxidans
… ferrooxidans in continuous culture and for Acidithiobacillus ferrooxidans in continuous and batch culture. The maximum bacterial specific ferrous-iron utilisation rate and the maximum bacterial specific growth rate calculated from the variable maintenance equation are very similar to those …
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Microbial dynamics of bioleaching consortia
… proportions of Leptospirillum ferriphilum, Acidithiobacillus caldus, Sulfobacillus benefaciens, Ferroplasma acidiphilum and other microbes. The tests performed included batch small-scale tests in 12-well Microwell plates (MWPs) with only an iron source, tests in MWPs with both an iron and …
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An investigation into bioleaching of uranium and rare earth elements from quartz-pebble conglomerate ores from Elliot Lake, Ontario
Biogeochemical mineral dissolution, the microbial-assisted dissolution of minerals, is an effective method for economically promoting the release of metals of interest from ores and mine waste materials. As the low-grade ores of the Elliot Lake region may be suitable for development of a …
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Biorecovery of platinum group metals from three-way catalysts
… en el paladio. En la primera etapa, se utilizó Acidithiobacillus thiooxidans para producir biológicamente ácido sulfúrico empleando azufre biogénico obtenido de un biorreactor de desulfuración. En comparación con el azufre comercial, el azufre biogénico mejoró significativamente la producción de …
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Growth of mixed cultures of moderate thermophiles for commercial heap bioleaching of low-grade copper-sulphide ores
… microbial species detected in the inocula i.e. Acidithiobacillus caldus, Acidiplasma cupricumulans, Acidithiomicrobium species and Metallosphaera species colonised the ore, albeit at different rates. The growth rates of individual microbial species were observed to vary in response to the …