effect of acidithiobacillus ferrooxidans and

Minerals

Biooxidation was applied to coal-based materials in this and other projects [4,5].Three forms or strains, namely Acidithiobacillus ferrooxidans (origin: coal waste), Acidithiobacillus caldus (origin: coal waste) and Acidithiobacillus thiooxidans (origin: Kimmeridge clay), are considered to be major species associated with bioleaching; and some of the more advanced genetic and metabolic

MICROBIAL LEACHING OF BLENDE FLOTATION CONCENTRATE USING ACIDITHIOBACILLUS FERROOXIDANS AND ACIDITHIOBACILLUS

Fig.2 Effect of a mixed cultures of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans on leaching rate of sphalerite concentrate Table 1. Compositions of blende (sphalerite) concentrate from Zakłady Grniczo-Hutnicze Bolesław [mm] [%] Zn Pb Cd

Electrochemical Behavior of Massive Bornite Bioleached

Electrochemical Behavior of Massive Bornite Bioleached Electrodes in the Presence of Acidithiobacillus Ferrooxidans and Acidithiobacillus Caldus p.417 Effect of Flotation and Solvent Extraction Reagents on the Bioleaching of a Copper Concentrate with Sulfolobus Metallicus

The enhanced effect of Acidithiobacillus ferrooxidans on

2018/6/1To eliminate the passivation effect, the chemolithotrophic mesophile Acidithiobacillus ferrooxidans was introduced to the reduction system, which can get energy from reduced sulfur and ferrous iron. Here, the reduction kinetic, capacity, and mechanism are systematically investigated when the biological factors were introduced to the inorganic system, and the technical feasibility of this novel

Minerals

Biooxidation was applied to coal-based materials in this and other projects [4,5].Three forms or strains, namely Acidithiobacillus ferrooxidans (origin: coal waste), Acidithiobacillus caldus (origin: coal waste) and Acidithiobacillus thiooxidans (origin: Kimmeridge clay), are considered to be major species associated with bioleaching; and some of the more advanced genetic and metabolic

Really active form of fluorine toxicity affecting Acidithiobacillus ferrooxidans

Acidithiobacillus ferrooxidans ATCC 23270 to fluorine could be obviously improved by adaptation for a long time. At last, a strain (i.e. Frs) was obtained, which could resist fluorine up to 40 mg/L. 3.3 Effect of fluorine on Frs activity at different pH values The effect

Effect of Acidithiobacillus ferrooxidans on Humic

The effect of Acidithiobacillus ferrooxidans on the humic-acid passivation layer on pyrite surfaces was studied by atomic-force microscopy, leaching experiments, and adsorption experiments. Atomic-force-microscopy results showed that humic-acid was adsorbed onto the pyrite surface.

Effect of iron transformation on Acidithiobacillus ferrooxidans bio

2019/5/4Acidithiobacillus ferrooxidans affects the dissolution of vanadium through the catalytic effect on Fe 3+ /Fe 2+ couple and material exchange. The passivation of iron settling correlates with ferrous ion content in bio-leaching solution.

[Dependence of the genotypic characteristics of

1. Mikrobiologiia. 2005 Sep-Oct;74(5):604-8. [Dependence of the genotypic characteristics of Acidithiobacillus ferrooxidans on the physical, chemical, and electrophysical properties of pyrites]. [Article in Russian] Tupikina OV, Kondrat'eva TF, Karavaĭko GI.

Influence of organic acids on pentlandite bioleaching by

This study investigates the synergy of different organic acids (acetic, ascorbic, citric, lactic, and oxalic) and Acidithiobacillus ferrooxidans LR pentlandite bioleaching. The addition of oxalic acid had a positive effect on the Ni extraction during pentlandite biological-chemical leaching after 15 days, and the yields observed were 45.6% (26.5 mg Ni/g ore).

Impact of Pulp Density on Extraction of Metals, By Acidithiobacillus ferrooxidans

Acidithiobacillus ferrooxidans was grown in 9K medium (Silverman and Lundgren, 1959) [composition g/l ammonium sulphate (NH 4) 2 SO 4 – 3.0, magnesium sulphate MgSO 4 7H 2 O -0.5, Table 1. Effect of pulp density on extraction of metals from bauxite ore

(PDF) Effect of Ni 2+, V 4+ and Mo 6+ concentration on

Effect of Single Metal IonsThe growth responses of Acidithiobacillus ferrooxidans in terms of iron oxidation rate at different concentrations of heavy metal ions in liquid cultures were studied. In this investigation, the concentration of nickel ion in the nutrient medium was varied from 1 g/L to 25 g/L, and the iron oxidation rate (IOR) was evaluated by measuring the residual ferrous

Effects of electron transport inhibitors and uncouplers on

Oxidation of Fe2+, ascorbic acid, propyl gallate, tiron, L-cysteine, and glutathione by Acidithiobacillus ferrooxidans was studied with respect to the effect of electron transport inhibitors and uncouplers on the rate of oxidation. All the oxidations were sensitive to

Acidithiobacillus ferrooxidans metabolism: from genome

2008/12/11Background Acidithiobacillus ferrooxidans is a major participant in consortia of microorganisms used for the industrial recovery of copper (bioleaching or biomining). It is a chemolithoautrophic, γ-proteobacterium using energy from the oxidation of iron- and sulfur-containing minerals for growth. It thrives at extremely low pH (pH 1–2) and fixes both carbon and nitrogen from

Effect of Nitrate Ions on Acidithiobacillus ferrooxidans

Effect of Nitrate Ions on Acidithiobacillus ferrooxidans-Mediated Bio-oxidation of Ferrous Ions and Pyrite. Fen W Liu Environmental Engineering Laboratory, College of Resource and Environment, Shanxi Agricultural University, Jinzhong, 030801, China.

Effect of uncouplers on endogenous respiration and

Oxidation of ferrous iron (Fe 2+) to ferric iron (Fe 3+) with oxygen (O 2) by Acidithiobacillus (Thiobacillus) ferrooxidans is considered to be inhibited by uncouplers. Oxidation of the endogenous substrates (presumably NADH) with O 2 or Fe 3+, on the other hand, was stimulated by uncouplers, 2,4‐dinitrophenol (DNP) and carbonylcyanide‐m‐chlorophenyl‐hydrazone (CCCP), as expected in

Effect of EPS on adhesion of Acidithiobacillus ferrooxidans

2011/2/1Effect of EPS on adhesion of Acidithiobacillus ferrooxidans on chalcopyrite and pyrite mineral surfaces YU Run-lan, OU Yang, TAN Jian-xi, WU Fa-deng, SUN Jing, MIAO Lei, ZHONG Dai-li Key Laboratory of Biometallurgy of Ministry of Education, School of Minerals

Minerals

Biooxidation was applied to coal-based materials in this and other projects [4,5].Three forms or strains, namely Acidithiobacillus ferrooxidans (origin: coal waste), Acidithiobacillus caldus (origin: coal waste) and Acidithiobacillus thiooxidans (origin: Kimmeridge clay), are considered to be major species associated with bioleaching; and some of the more advanced genetic and metabolic

Oxidation of Chalcopyrite (CuFeS2) by Acidithiobacillus

Chalcopyrite bioleaching process using Acidithiobacillus ferrooxidans and a mixed culture of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans like bacterium was carried out. Two mineral particle sizes were evaluated, 200 and 325 Tyler mesh. The

Subject: Acidithiobacillus ferrooxidans

This paper presents micro- and nano-fabrication techniques for leachable realgar using the extremophilic bacterium Acidithiobacillus ferrooxidans (A. ferrooxidans) DLC-5.Realgar nanoparticles of size ranging from 120 nm to 200 nm were successfully prepared

Isolation and Characterization of Acidithiobacillus ferrooxidans Strain

2015, Vol.114: 138146 ISS 13122 - 138 - Isolation and Characterization of Acidithiobacillus ferrooxidans Strain FJS from Ramsar, Iran Samaneh Jahani1, Faezeh Fatemi1,*, Mohammad Ali Firoz-e-zare1, Mohammad Reza Zolfaghari2 1 Nuclear Fuel Cycle Research

Effect of pH values on the extracellular polysaccharide

The effect of pH values on the extracellular polysaccharide secreted by Acidithiobacillus ferrooxidans was investigated in different phases of bacterial growth during chalcopyrite bioleaching. It is found that extracellular polysaccharide secretion from the cells attached to chalcopyrite is more efficiently than that of the free cells in the bioleaching solution.

Isolation and Characterization of a Strain of

Abstract: An acidophilic strain was isolated from drainage in Shanxi coal mine, after 16SrDNA amplification and sequencing analysis, it was identified to be Acidithiobacillus ferrooxidans.The ferrous ion oxidation rate of At.f and pH value were studied during its growth, the results showed that, the strain entering into the exponential growth phase needed about 30 hours, and the oxidation rate

Isolation and Characterization of Acidithiobacillus ferrooxidans Strain

2015, Vol.114: 138146 ISS 13122 - 138 - Isolation and Characterization of Acidithiobacillus ferrooxidans Strain FJS from Ramsar, Iran Samaneh Jahani1, Faezeh Fatemi1,*, Mohammad Ali Firoz-e-zare1, Mohammad Reza Zolfaghari2 1 Nuclear Fuel Cycle Research

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