Results 31 to 40 of about 10,485 (217)

Pyrite oxidation under initially neutral pH conditions and in the presence of Acidithiobacillus ferrooxidans and micromolar hydrogen peroxide [PDF]

open access: yes, 2012
Hydrogen peroxide (H2O2) at a micromolar level played a role in the microbial surface oxidation of pyrite crystals under initially neutral pH. When the mineral-bacteria system was cyclically exposed to 50 μM H2O2, the colonization of Acidithiobacillus ...
Lin, C., Ma, Y.
core   +2 more sources

Potential of Acidithiobacillus ferrooxidans to Grow on and Bioleach Metals from Mars and Lunar Regolith Simulants under Simulated Microgravity Conditions

open access: yesMicroorganisms, 2021
The biomining microbes which extract metals from ores that have been applied in mining processes worldwide hold potential for harnessing space resources.
Anna H. Kaksonen   +5 more
doaj   +1 more source

Molecular genetic analysis of a thioredoxin gene from Thiobacillus ferrooxidans [PDF]

open access: yesMicrobiology, 1995
The Thiobacillus ferrooxidans thioredoxin gene, trxA, was isolated by its ability to complement an Escherichia coli gshA trxA mutant which was otherwise unable to grow on minimal medium lacking glutathione. The T. ferrooxidans thioredoxin also enabled the in vivo reduction by E.
R E, Powles, S M, Deane, D E, Rawlings
openaire   +2 more sources

Mechanisms of Bacterial Extracellular Electron Exchange. [PDF]

open access: yes, 2016
The biochemical mechanisms by which microbes interact with extracellular soluble metal ions and insoluble redox-active minerals have been the focus of intense research over the last three decades. The process presents two challenges to the microorganism;
Butt, Julea N.   +5 more
core   +1 more source

Corrosion and Electrochemical Oxidation of a Pyrite by Thiobacillus ferrooxidans [PDF]

open access: yesApplied and Environmental Microbiology, 1992
The oxidation of a pure pyrite by Thiobacillus ferrooxidans is not really a constant phenomenon; it must be considered to be more like a succession of different steps which need characterization. Electrochemical studies using a combination of a platinum electrode and a specific pyrite electrode (packed-ground-pyrite
Mustin, C.   +3 more
openaire   +2 more sources

The small heat shock proteins from Acidithiobacillus ferrooxidans: gene expression, phylogenetic analysis, and structural modeling

open access: yesBMC Microbiology, 2011
Background Acidithiobacillus ferrooxidans is an acidophilic, chemolithoautotrophic bacterium that has been successfully used in metal bioleaching. In this study, an analysis of the A.
Ribeiro Daniela A   +5 more
doaj   +1 more source

Application of Acidithiobacillus ferrooxidans for recovering metals from electronic waste dust [PDF]

open access: yes, 2018
The paper discusses metal recovery from metallic wastes by means of pure chemical and biological leaching in an acidic medium. The research tested whether it is possible to remove Cu, Al, Sn and Ag from the dust formed during processing of electronic ...
Blažek, Vladislav   +3 more
core   +1 more source

Visualisation of the interaction between Acidithiobacillus ferrooxidans and oil shale by atomic force microscopy [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2012
This study visually documents the mechanical contact and interaction between the bacterial cells of two biogeocenotically different strains of Acidithiobacillus ferrooxidans (At. ferrooxidans) and oil shale containing pyrite.
Milić Jelena S.   +4 more
doaj   +1 more source

U mobilization and associated U isotope fractionation by sulfur-oxidizing bacteria

open access: yesFrontiers in Microbiology, 2023
Uranium (U) contamination of the environment causes high risk to health, demanding for effective and sustainable remediation. Bioremediation via microbial reduction of soluble U(VI) is generating high fractions (>50%) of insoluble non-crystalline U(IV)
C. D. Rosendahl   +3 more
doaj   +1 more source

Advances in bioleaching as a sustainable method for metal recovery from e-waste:A review [PDF]

open access: yes, 2019
Electronic waste (e-waste) accumulation on earth is a serious environmental challenge. The need for heavy metal recovery, together with the profitability of precious and base metals, are strong incentives for researchers to find a sustainable method for ...
Bahaloo-Horeh, Nazanin   +4 more
core   +1 more source

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