Results 141 to 150 of about 1,142 (184)

Reduction of vanadium(V) with Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

open access: yesBioresource Technology, 2004
Biotechnological leaching has been proposed as a suitable method for extraction of vanadium from spent catalysts and oil ash. In the biological leaching process, the vanadium(V) can be reduced to vanadium(IV), which is a less toxic and more soluble form of the vanadium.
Katarina, Bredberg   +2 more
openaire   +3 more sources

Oxidation of isochemical FeS2 (marcasite–pyrite) by Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans

open access: yesMinerals 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
openaire   +3 more sources

The role of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans in arsenic bioleaching from soil

Environmental Geochemistry and Health, 2013
Bioleaching of As from the soil in an abandoned Ag-Au mine was carried out using Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans. A. ferrooxidans is an iron oxidizer and A. thiooxidans is a sulfur oxidizer. These two microbes are acidophilic and chemoautotrophic microbes.
Myoung-Soo Ko   +2 more
exaly   +3 more sources

Acidithiobacillus thiooxidans and its potential application

Applied Microbiology and Biotechnology, 2019
Acidithiobacillus 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
Peng Chen, Lei Yan
exaly   +3 more sources

Bioleaching of low-grade copper sulfide ores by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

Journal of Central South University, 2014
The grown conditions of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans were investigated, and then experiments were conducted to research the bioleaching behaviors of crude ore of copper sulfide and hand-picked concentrates of chalcopyrite by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans.
Jun Wang, Hong-Bo Zhao, Cong-Ren Yang
exaly   +2 more sources

Oxidation of chalcopyrite by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans in shake flasks

open access: yesProcess 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
openaire   +3 more sources

Removal of hydrogen sulfide by sulfate-resistant Acidithiobacillus thiooxidans AZ11

open access: yesJournal of Bioscience and Bioengineering, 2006
Toxic H2S gas is an important industrial pollutant that is applied to biofiltration. Here, we examined the effects of factors such as inlet concentration and space velocity on the removal efficiency of a bacterial strain capable of tolerating high sulfate concentrations and low pH conditions.
Eun Young, Lee   +3 more
openaire   +3 more sources

Reduction of uranium(VI) by Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans

Hydrometallurgy, 2010
Interaction of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans with soluble uranium(VI) was studied. Acidithiobacillus thiooxidans aerobic cultures showed considerable decrement of uranium in solution when pH was set to 4 with KOH. This condition stabilized polythionates produced as a result of the oxidative sulphur metabolism and ...
R.M. Gargarello   +4 more
openaire   +1 more source

Responses of Acidithiobacillus thiooxidans A01 to Individual and Joint Nickel (Ni2+) and Ferric (Fe3+)

open access: yesMinerals (Basel, Switzerland), 2019
Acidithiobacillus thiooxidans A01 is widely used in bioleaching processes and commonly thrives in most metal-rich environments. However, interactions between different heavy metals remain obscure. In this study, we elaborated the effect of ferric iron on
Xiaodong Hao, Yunhua Xiao, Kai Zou
exaly   +2 more sources

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