Results 181 to 190 of about 3,299 (207)

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

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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A comparison of bioleaching of covellite using pure cultures of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans or a mixed culture of Leptospirillum ferrooxidans and Acidithiobacillus thiooxidans

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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Bioleaching of djurleite using Acidithiobacillus ferrooxidans

Minerals Engineering, 2013
Abstract 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, Hai Lin, Huang Cheng, Xiao-lan Mo, Ying-bo Dong   +4 more
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Use of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans in the Recovery of Heavy Metals from Landfill Leachates

Energies, 2021
Tomasz Kamizela, Anna Grobelak, Małgorzata Worwa̧G   +2 more
exaly  

The bioleaching of hematite by Acidithiobacillus ferrooxidans r4A1FC2B3

2012
The bacterial reduction of hematite was made by Acidithiobacillus ferrooxidans strain r4A1FC2B3. By using the bacteria r4A1FC2B3 the effects of particle size, ore concentration and bacteria concentration on the bacterial reduction of hematite were studied. The bioleaching of hematite due to the indirect bacterial was reduced to Fe (II).
TEKİN, Derya, TEKİN, Taner, YÖRÜK, Sedat   +2 more
openaire   +1 more source

Reduction of Selenite by Acidithiobacillus ferrooxidans

Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2006
Akasaka, satoru, Sawada, Kayo, Enokida, Youichi, Yamamoto, Ichiro, Ohnuki, Toshihiko   +4 more
openaire   +1 more source