Results 161 to 170 of about 8,912 (205)

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, D. Di Gregorio, H. Huck, J. Fernandez Niello, G. Curutchet   +4 more
openaire   +1 more source

Molecular disruptions in microalgae caused by Acidithiobacillus ferrooxidans: Photosynthesis, oxidative stress, and energy metabolism in acid mine drainage.

Water Research
Microalgae are recognized for their potential in the bioremediation of acid mine drainage (AMD), despite the challenges posed by AMD's low pH, high heavy metal content, and oligotrophic conditions.
Meichen Wang, Zhengbo Yue, Rui Deng, Zhixiang She, Lu Zhang, Fan Yang, Jin Wang   +6 more
semanticscholar   +1 more source

Surface properties of pyrite in the course of bioleaching by pure culture of Acidithiobacillus ferrooxidans and a mixed culture of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

Hydrometallurgy, 2011
Abstract Both Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans attached to pyrite rapidly, reaching the adsorption equilibrium in 20 – 25 min. Furthermore, the adsorption content of substrate-grown bacteria was larger than that of solution-grown ones.
Hui Liu, Guohua Gu, Yangbao Xu
openaire   +1 more source

The pyrite iron cycle catalyzed by Acidithiobacillus ferrooxidans

Journal of Mathematical Biology, 2013
In this paper, we study a model of the biotic pyrite iron cycle catalyzed by bacteria Acidithiobacillus ferrooxidans, in mining activity sites waste dumps. Chemical reactions, reaction rates and the population growth model are mostly taken from the existing literature. Analysis of the corresponding dynamical system shows the existence of up to four non-
Dumett, Miguel A., Keener, James P.
openaire   +2 more sources

Inhibition of iron oxidation in Acidithiobacillus ferrooxidans by low-molecular-weight organic acids: Evaluation of performance and elucidation of mechanisms.

Science of the Total Environment
The catalytic role of Acidithiobacillus ferrooxidans (A. ferrooxidans) in iron biooxidation is pivotal in the formation of Acid Mine Drainage (AMD), which poses a significant threat to the environment.
Wenbo Li, Qiyan Feng, Ze Li, Tao Jin, Yun Zhang, Gordon Southam   +5 more
semanticscholar   +1 more source

Strain Polymorphism of the Plasmid Profiles in Acidithiobacillus ferrooxidans

Microbiology, 2002
Plasmid profiles were studied in 27 Acidithiobacillus ferrooxidans strains isolated from different geographic zones and substrates differing in the composition of the main sulfide minerals, and also in experimentally obtained strains with acquired enhanced resistance to the ions of heavy metals (Fe, Ni, Cu, Zn, As).
T F, Kondrat'eva, S N, Ageeva, L N, Muntian, T A, Pivovarova, G I, Karavaĭko   +4 more
openaire   +2 more sources

Biocompatibility evaluation of magnetosomes formed by Acidithiobacillus ferrooxidans

Materials Science and Engineering: C, 2012
Magnetite nanocrystal has been extensively used in biomedical field. Currently, an interesting alternative to synthetic magnetic Fe3O4 nanoparticles, called magnetosome, has been found in magnetotactic bacteria. It has been reported that Acidithiobacillus ferrooxidans (At. ferrooxidans) has a potential to synthesize magnetosome.
Lei, Yan, Xiaoxuan, Yue, Shuang, Zhang, Peng, Chen, Zhiliang, Xu, Yang, Li, Hongyu, Li   +6 more
openaire   +2 more sources

Weathering of Biotite inAcidithiobacillus ferrooxidansCultures

Geomicrobiology Journal, 2011
The purpose of this study was to assess the weathering of biotite under conditions simulating an active bioleaching environment. Finely ground biotite was contacted with Acidithiobacillus ferrooxidans culture solutions for up to 120 days. Biotite was altered under these conditions to interstratified structures comprised of mixed layers of biotite and ...
Tariq M. Bhatti, Jerry M. Bigham, Antti Vuorinen, Olli H. Tuovinen   +3 more
openaire   +1 more source

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

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., Leite, ALLC, Garcia, O., Tuovinen, O. H.   +3 more
openaire   +2 more sources

Rapid and specific detection of Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans by PCR

Hydrometallurgy, 2008
Abstract Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans are two of the most important bacteria in heap bioleaching processes of copper sulphide at common operating temperatures (18–24 °C). In this paper, both microorganisms were detected in solutions and ores coming from processes in 2 days, using specific amplification of 16S ...
Escobar Miguel, Blanca, Bustos, Karina, Salazar, Oriana, Morales, Gabriela   +3 more
openaire   +2 more sources