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Iron and sulfur oxidation pathways of Acidithiobacillus ferrooxidans
World Journal of Microbiology and Biotechnology, 2019Acidithiobacillus ferrooxidans is a gram-negative, autotrophic and rod-shaped bacterium. It can gain energy through the oxidation of Fe(II) and reduced inorganic sulfur compounds for bacterial growth when oxygen is sufficient. It can be used for bio-leaching and bio-oxidation and contributes to the geobiochemical circulation of metal elements and ...
Yue, Zhan +6 more
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Weathering of Biotite inAcidithiobacillus ferrooxidansCultures
Geomicrobiology Journal, 2011The purpose of this study was to assess the weathering of biotite under conditions simulating an active bioleaching environment. Finely ground biotite was contacted with Acidithiobacillus ferrooxidans culture solutions for up to 120 days. Biotite was altered under these conditions to interstratified structures comprised of mixed layers of biotite and ...
Tariq M. Bhatti +3 more
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Adhesion of Acidithiobacillus ferrooxidans to mineral surfaces
International Journal of Mineral Processing, 2010Abstract Direct contact mechanism in bioleaching implies prior mineral adhesion of Acidithiobacillus ferrooxidans and subsequent enzymatic attack. Prior bacterial adaptation to sulfide mineral substrates influences bacterial ferrous ion oxidation rates.
Devasia, Preston, Natarajan, KA
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Kinetics of sphalerite bioleaching by Acidithiobacillus ferrooxidans
Hydrometallurgy, 2009Abstract In the present study, the effect of some important parameters including particle size, pulp density and temperature on the rate of Zn dissolution from sphalerite concentrate by Acidithiobacillus ferrooxidans was investigated. The highest rate of sphalerite bioleaching was obtained at particle size, pulp density and temperature of 38–150 μm,
D. Fatmehsari Haghshenas +4 more
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Modeling of uranium bioleaching by Acidithiobacillus ferrooxidans
Annals of Nuclear Energy, 2012Abstract In this paper, a mathematical model for the mesophilic bioleaching of uraninite is developed. The case of constant temperature, pH, and initial ore concentration is considered. The model is validated by comparing the calculated and measured values of uranium extraction, ferric and ferrous iron in solution, and cell concentration.
A. Rashidi +3 more
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Experimental Investigation on Triclosan to Acidithiobacillus Ferrooxidans
Advanced Materials Research, 2013Microbial activities intensified the oxidation of sulfide and acidification of coal mine waste. We had an investigation on bactericidal effect of triclosan in this experiment, taking the pH, Eh, Fe2+oxidation rate, Fe2+concentration and oxidation inhibition rate as the indexes. The lab experiment shows that this bactericide is effective. When they were
Jing Jing Xu +3 more
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Electrofuel Production Using Genetically Engineered Acidithiobacillus Ferrooxidans
ECS Meeting Abstracts, 2014We have been developing an electrofuels platform for the production of fuels and chemicals from dilute CO2 using electricity. The electricity can come from diverse sources which enables this technology to serve as an alternative means for storing and utilizing renewable energy.
Scott Banta, Alan West
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Environmental Geochemistry and Health, 2013
Bioleaching of As from the soil in an abandoned Ag-Au mine was carried out using Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans. A. ferrooxidans is an iron oxidizer and A. thiooxidans is a sulfur oxidizer. These two microbes are acidophilic and chemoautotrophic microbes.
Myoung-Soo, Ko +3 more
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Bioleaching of As from the soil in an abandoned Ag-Au mine was carried out using Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans. A. ferrooxidans is an iron oxidizer and A. thiooxidans is a sulfur oxidizer. These two microbes are acidophilic and chemoautotrophic microbes.
Myoung-Soo, Ko +3 more
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Application of Acidithiobacillus Ferrooxidans in Coal Flotation
International Journal of Coal Preparation and Utilization, 2009Bioflotation is a potential method for removing pyritic sulphur from coal. Sodium cyanide is a well-known depressant for pyrite in flotation of sulphide minerals; however, for coal this reagent is unacceptable from the environmental point of view. This study investigates an alternate to sodium cyanide; Acidithiobacillus Ferrooxidans, a nonharmful ...
Amini, E. +3 more
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Biological oxidation of metallic copper by Acidithiobacillus ferrooxidans
Biotechnology and Bioengineering, 2006AbstractThis is a report on the kinetic aspects and the analytical study of the bioproducts of the oxidation of zero‐valence copper by immobilized Acidithiobacillus ferrooxidans. Two different mechanisms of oxidation were considered: direct and indirect. A custom‐built bioreactor was used to grow A.
K, Lilova +3 more
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