Results 181 to 190 of about 2,547 (199)

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 metals from printed wire boards by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans and their mixture

Journal of Hazardous Materials, 2009
Bioleaching processes were used to mobilize metals from printed wire boards (PWBs). The bacteria Acidithiobacillus ferrooxidans (A. ferrooxidans) and Acidithiobacillus thiooxidans (A. thiooxidans) isolated from an acidic mine drainage were grown and acclimated in presence of PWBs and then used as bioleaching bacteria to solubilize metals from PWBs. The
Jingwei, Wang, Jianfeng, Bai, Jinqiu, Xu, Bo, Liang   +3 more
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Comparative study of inorganic arsenic resistance of several strains of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans

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, Kaiyan Li, Xiaoxue Zhang, Yongquan Li, Yan Zhu, Jianfei Lu, Hongyu Li   +6 more
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A simple medium modification for isolation, growth and enumeration of Acidithiobacillus thiooxidans (syn. Thiobacillus thiooxidans) from water samples

Journal of Microbiological Methods, 2013
High concentrations of H(2)S in groundwater are commonly removed using Biological Trickling Filter (BTF) that contains high numbers of biofilm immobilized sulfur oxidizing bacteria (mainly Thiobacillus thiooxidans). BTF performance requires continuous monitoring of these bacteria at several sampling points.
Janeta, Starosvetsky, Udy, Zukerman, Robert H, Armon   +2 more
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Fractionation behavior of heavy metals in soil during bioleaching with Acidithiobacillus thiooxidans

Journal of Hazardous Materials, 2009
The effects of bioleaching on the fractionation of soil heavy metals were investigated in this study. Bioleaching of heavy metals from contaminated soil was carried out in shake flask experiments. Acidophilic sulfur oxidizing bacteria Acidithiobacillus thiooxidans isolated from soil was used for bioleaching.
R, Naresh Kumar, R, Nagendran
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The inhibitory effect of antimicrobial zeolite on the biofilm of Acidithiobacillus thiooxidans

Biodegradation, 2009
The inhibitory effect of antimicrobial zeolite coated concrete specimens (Z2) against Acidithiobacillus thiooxidans was studied by measuring biomass dry cell weight (DCW), biological sulphate generation, and oxygen uptake rates (OURs). Uncoated (UC), and blank zeolite coated without antimicrobial agent (ZC) concrete specimens were used as controls. The
Tesfaalem, Haile, George, Nakhla
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Changes in biofilm structure during the colonization of chalcopyrite by Acidithiobacillus thiooxidans

Applied Microbiology and Biotechnology, 2012
Biofilms of Acidithiobacillus thiooxidans were grown on the surface of massive chalcopyrite electrodes (MCE) where different secondary sulfur phases were previously formed by potentiostatic oxidation of MCE at 0.780≤Ean≤0.965 V (electrooxidized MCE, eMCE). The formation of mainly S⁰ and minor amounts of CuS and Sn²⁻ were detected on eMCEs.
J V, García-Meza, J J, Fernández, R H, Lara, I, González   +3 more
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Growth Inhibition by Tungsten in the Sulfur-Oxidizing BacteriumAcidithiobacillus thiooxidans

Bioscience, Biotechnology, and Biochemistry, 2005
Growth of five strains of sulfur-oxidizing bacteria Acidithiobacillus thiooxidans, including strain NB1-3, was inhibited completely by 50 microM of sodium tungstate (Na(2)WO(4)). When the cells of NB1-3 were incubated in 0.1 M beta-alanine-SO(4)(2-) buffer (pH 3.0) with 100 microM Na(2)WO(4) for 1 h, the amount of tungsten bound to the cells was 33 ...
Atsunori, Negishi, Tadashi, Muraoka, Terunobu, Maeda, Fumiaki, Takeuchi, Tadayoshi, Kanao, Kazuo, Kamimura, Tsuyoshi, Sugio   +6 more
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Bioleaching of heavy metals from sewage sludge using Acidithiobacillus thiooxidans

AIP Conference Proceedings, 2010
Acidithiobacillus thiooxidans was isolated from sewage sludge using the incubation in the Waksman liquor medium and the inoculation in Waksman solid plate. It was found that the optimum conditions of the bioleaching included solid concentration 2%, sulfur concentration 5 g⋅L−1 and cell concentration 10%.
Ye-Ming Wen, Hong-Yan Lin, Qing-Ping Wang, Zu-Liang Chen, Fangming Jin, Qi Zhou, Bing Wu   +6 more
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Evolution of biofilms during the colonization process of pyrite by Acidithiobacillus thiooxidans

Applied Microbiology and Biotechnology, 2011
We have applied epifluorescence principles, atomic force microscopy, and Raman studies to the analysis of the colonization process of pyrite (FeS(2)) by sulfuroxidizing bacteria Acidithiobacillus thiooxidans after 1, 15, 24, and 72 h. For the stages examined, we present results comprising the evolution of biofilms, speciation of S (n) (2-) /S(0 ...
Dulce M, González, René H, Lara, Keila N, Alvarado, Donato, Valdez-Pérez, Hugo R, Navarro-Contreras, Roel, Cruz, Jessica Viridiana, García-Meza   +6 more
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