Results 201 to 210 of about 9,443 (220)
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Hydrometallurgy, 2009
The growth characteristics of several strains of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans were studied in the presence of soluble inorganic arsenic(III) and (V) with regard to media pH changes, total bacterial populations and sulfur oxidation rates.
Feifan Leng +6 more
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The growth characteristics of several strains of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans were studied in the presence of soluble inorganic arsenic(III) and (V) with regard to media pH changes, total bacterial populations and sulfur oxidation rates.
Feifan Leng +6 more
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Hydrometallurgy, 2011
Abstract Both Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans attached to pyrite rapidly, reaching the adsorption equilibrium in 20 – 25 min. Furthermore, the adsorption content of substrate-grown bacteria was larger than that of solution-grown ones.
Hui Liu, Guohua Gu, Yangbao Xu
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Abstract Both Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans attached to pyrite rapidly, reaching the adsorption equilibrium in 20 – 25 min. Furthermore, the adsorption content of substrate-grown bacteria was larger than that of solution-grown ones.
Hui Liu, Guohua Gu, Yangbao Xu
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Response of Acidithiobacillus caldus toward suboptimal pH conditions
Extremophiles, 2013Maintenance of a circumneutral intracellular pH is important for any organism. Acidophilic microorganisms thrive at low pH while maintaining their intracellular pH around 6.5. However, the mechanisms contributing to acidophile pH homeostasis are not well characterized.
Mangold S, Rao Jonna V, Dopson M
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The pyrite iron cycle catalyzed by Acidithiobacillus ferrooxidans
Journal of Mathematical Biology, 2013In this paper, we study a model of the biotic pyrite iron cycle catalyzed by bacteria Acidithiobacillus ferrooxidans, in mining activity sites waste dumps. Chemical reactions, reaction rates and the population growth model are mostly taken from the existing literature. Analysis of the corresponding dynamical system shows the existence of up to four non-
Dumett, Miguel A., Keener, James P.
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Bioleaching of djurleite using Acidithiobacillus ferrooxidans
Minerals Engineering, 2013Abstract The bioleaching of djurleite using Acidithiobacillus ferrooxidans (LD-1) was investigated in this paper. Experiments were carried out in shake flasks at pH 2.0, 160 r/min and 30 °C. The leaching residues were analyzed using X-ray diffraction (XRD), Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS).
Kai-bin Fu +4 more
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Bioleaching of chalcopyrite by Acidithiobacillus ferrooxidans
Minerals Engineering, 2013Acidithiobacillus ferrooxidans (A. ferrooxidans) was selected to experimentally study the effects of bacteria on the oxidation of chalcopyrite. The results indicated that A. ferrooxidans remarkably promoted the oxi- dation of chalcopyrite. The pH of the cell broth medium was observed to increase and then decrease dur- ing the bioleaching experiment ...
XingQing Zhao +5 more
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Hydrometallurgy, 2003
The aim of this investigation was to determine the efficacy of covellite bioleaching using pure cultures of Acidithiobacillus ferrooxidans or Acidithiobacillus thiooxidans and a mixed culture composed of At. thiooxidans and Leptospirillum ferrooxidans. The experiments were carried out in shake flasks with or without iron(II) (1 g/L as ferrous sulphate)
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The aim of this investigation was to determine the efficacy of covellite bioleaching using pure cultures of Acidithiobacillus ferrooxidans or Acidithiobacillus thiooxidans and a mixed culture composed of At. thiooxidans and Leptospirillum ferrooxidans. The experiments were carried out in shake flasks with or without iron(II) (1 g/L as ferrous sulphate)
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Genetic engineering of the acidophilic chemolithoautotroph Acidithiobacillus ferrooxidans
Trends in Biotechnology, 2022Yuta Inaba, Scott Banta
exaly