Results 151 to 160 of about 6,286 (170)

Adhesion of Acidithiobacillus ferrooxidans to mineral surfaces

International Journal of Mineral Processing, 2010
Abstract 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, 2009
Abstract 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, E. Keshavarz Alamdari, B. Bonakdarpour, D. Darvishi, B. Nasernejad   +4 more
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Modeling of uranium bioleaching by Acidithiobacillus ferrooxidans

Annals of Nuclear Energy, 2012
Abstract 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, J. Safdari, R. Roosta-Azad, S. Zokaei-Kadijani   +3 more
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Experimental Investigation on Triclosan to Acidithiobacillus Ferrooxidans

Advanced Materials Research, 2013
Microbial 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, Bei Lei Wei, Yang Yu, Ji Yong Zeng   +3 more
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Electrofuel Production Using Genetically Engineered Acidithiobacillus Ferrooxidans

ECS Meeting Abstracts, 2014
We 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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Application of Acidithiobacillus Ferrooxidans in Coal Flotation

International Journal of Coal Preparation and Utilization, 2009
Bioflotation 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., Hosseini, T. R., Oliazadeh, M., Kolahdoozan, M.   +3 more
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Biological oxidation of metallic copper by Acidithiobacillus ferrooxidans

Biotechnology and Bioengineering, 2006
AbstractThis 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, D, Karamanev, R L, Flemming, T, Karamaneva   +3 more
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Mechanism of Growth Inhibition by Tungsten in Acidithiobacillus ferrooxidans

Bioscience, Biotechnology, and Biochemistry, 2001
Cell growth of three hundred iron-oxidizing bacteria isolated from natural environments was inhibited strongly by 0.05 mM, and completely by 0.2 mM of sodium tungstate (Na2WO4), respectively. Since no great difference in the level of tungsten inhibition was observed among the 300 strains tested, the mechanism of inhibition by Na2WO4 was studied with ...
T, Sugio, H, Kuwano, A, Negishi, T, Maeda, F, Takeuchi, K, Kamimura   +5 more
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Preparation of jarosite by Acidithiobacillus ferrooxidans oxidation

Journal of Central South University of Technology, 2007
The formation of jarosite in the presence of Acidithiobacillus ferrooxidans (A. ferrooxidans) was researched to ascertain the conditions of producing minimum precipitation. The effects of salt concentration and pH on the characteristics of jarosite formed in K2SO4/(NH4)2SO4-FeSO4 inorganic salt solution and 9K medium were studied by using the ...
Jian-she Liu, Bang-mei Li, De-yi Zhong, Le-xian Xia, Guan-zhou Qiu   +4 more
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BIOINFORMATICS ANALYSIS OF FERREDOXIN FROM ACIDITHIOBACILLUS FERROOXIDANS

Acta Medica Mediterranea, 2017
<p><b>Introduction</b>: Ferredoxin was one of important proteins in Acidithiobacillus ferrooxidans, functioned as electron transfer agents in many important biological reactions. As a crucial protein involved in iron oxidation-reduction and electron transfer, tho- rough investigation of ferredoxin was of great significance. Aim of the
LENG, FEIFAN, WANG, YONGGANG
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