Results 191 to 200 of about 9,443 (220)
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Process Biochemistry, 2002
Abstract Chalcopyrite oxidation was evaluated with two acidophilic thiobacilli that are important in bioleaching processes. Acidithiobacillus thiooxidans in pure culture did not oxidize CuFeS2 but oxidized externally added S0 in the presence of CuFeS2.
Bevilaqua, D. +3 more
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Abstract Chalcopyrite oxidation was evaluated with two acidophilic thiobacilli that are important in bioleaching processes. Acidithiobacillus thiooxidans in pure culture did not oxidize CuFeS2 but oxidized externally added S0 in the presence of CuFeS2.
Bevilaqua, D. +3 more
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Minerals Engineering, 2007
Abstract A research-grade mineral sample that contained marcasite and pyrite (FeS 2 ) was subjected to the oxidation by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans . Oxidation of FeS 2 by A. ferrooxidans produced acid, and the redox potential increased with sulfide dissolution and the oxidation of Fe 2+ .
Garcia, Oswaldo +2 more
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Abstract A research-grade mineral sample that contained marcasite and pyrite (FeS 2 ) was subjected to the oxidation by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans . Oxidation of FeS 2 by A. ferrooxidans produced acid, and the redox potential increased with sulfide dissolution and the oxidation of Fe 2+ .
Garcia, Oswaldo +2 more
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Acidithiobacillus ferrooxidans and its potential application
Extremophiles, 2018The widely distributed Acidithiobacillus ferrooxidans (A. ferrooxidans) lives in extremely acidic conditions by fixing CO2 and nitrogen, and by obtaining energy from Fe2+ oxidation with either downhill or uphill electron transfer pathway and from reduced sulfur oxidation. A.
Shuang, Zhang +5 more
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Acidithiobacillus thiooxidans and its potential application
Applied Microbiology and Biotechnology, 2019Acidithiobacillus thiooxidans (A. thiooxidans) is a widespread, mesophilic, obligately aerobic, extremely acidophilic, rod-shaped, and chemolithoautotrophic gram-negative gammaproteobacterium. It can obtain energy and electrons from the oxidation of reducible sulfur, and it can fix carbon dioxide and assimilate nitrate, nitrite, and ammonium to satisfy
Lei Yang +6 more
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2010 International Conference on Chemistry and Chemical Engineering, 2010
In this investigation, a spent processing catalyst from one of the oil refineries in Iran was initially characterized physically and chemically. Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans were used to mobilize aluminum, cobalt, molybdenum and nickel from hazardous spent catalysts.
R. Mafi Gholami +2 more
openaire +1 more source
In this investigation, a spent processing catalyst from one of the oil refineries in Iran was initially characterized physically and chemically. Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans were used to mobilize aluminum, cobalt, molybdenum and nickel from hazardous spent catalysts.
R. Mafi Gholami +2 more
openaire +1 more source
Colloids and Surfaces B: Biointerfaces, 2012
The efficiency of copper leaching is improved by bacteria attached to chalcopyrite. Therefore, the study of the attachment mechanism to control leaching is important. The adhesion of three species of leaching microorganisms including Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans to chalcopyrite was ...
Zhu, Jianyu +10 more
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The efficiency of copper leaching is improved by bacteria attached to chalcopyrite. Therefore, the study of the attachment mechanism to control leaching is important. The adhesion of three species of leaching microorganisms including Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans to chalcopyrite was ...
Zhu, Jianyu +10 more
openaire +2 more sources
Minerals Engineering, 2007
Abstract Anilite oxidation was evaluated with two acidophilic thiobacilli that are important in bioleaching processes. The experiments were carried out in shake flasks in the absence and presence of energy sources such as 2 g/L powdered sulphur and 10 g/L Fe 2+ (as ferrous sulphate) at pH 2.0, 150 rpm, 35 °C. Tests showed that copper extraction in
Hai-na Cheng, Yue-hua Hu
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Abstract Anilite oxidation was evaluated with two acidophilic thiobacilli that are important in bioleaching processes. The experiments were carried out in shake flasks in the absence and presence of energy sources such as 2 g/L powdered sulphur and 10 g/L Fe 2+ (as ferrous sulphate) at pH 2.0, 150 rpm, 35 °C. Tests showed that copper extraction in
Hai-na Cheng, Yue-hua Hu
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Organoarsenic resistance and bioremoval of Acidithiobacillus ferrooxidans
Bioresource Technology, 2010The tolerance and bioremoval of dimethylarsinic acid (DMA(V)) by Acidithiobacillus ferrooxidans (A. ferrooxidans) were investigated here. The inhibitory concentration (IC) of DMA(V) was determined for A. ferrooxidans. The effects of various parameters such as pH, contact time, initial DMA(V) concentration, biosorbent dose and temperature were ...
Lei, Yan +6 more
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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 +3 more
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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 +3 more
openaire +2 more sources
Hydrometallurgy, 2006
Abstract Attachment of four strains of Acidithiobacillus ferrooxidans to pyrite, chalcopyrite, galena, sphalerite or quartz was found to be mineral-selective. The bacterial extracellular polymeric substances (EPS) are responsible for mediating this process. Attachment of cells of A.
Harneit, Kerstin +5 more
exaly +2 more sources
Abstract Attachment of four strains of Acidithiobacillus ferrooxidans to pyrite, chalcopyrite, galena, sphalerite or quartz was found to be mineral-selective. The bacterial extracellular polymeric substances (EPS) are responsible for mediating this process. Attachment of cells of A.
Harneit, Kerstin +5 more
exaly +2 more sources