coal desufurization by acidobacillus ferroxidan

Kinetics of theRemovalofIronPyritefromCoalbyMicrobial ...

ferrooxidans and Thiobacillus thiooxidans to catalyzetheoxidative dissolution ofiron pyrite, FeS2, inthepresenceofacoalmatrix. Determi-nation of the kinetics and mechanisms of the oxidative dissolution of FeS2 found in coal as catalyzed by bacterial action should establish optimal biochemical, chemical, and physical conditions for bacterial ...

Desulfurization of Tabas coal by thiobacillus ferrooxidans ...

Desulfurization of Tabas coal by thiobacillus ferrooxidans. Dates. Publication Year 1996 Publication Date 1996. Citation. M Tabatabae, AR Shahverdi, M Oliazadeh, and M Sanati, Desulfurization of Tabas coal by thiobacillus ferrooxidans: Minerals Engineering [MINERALS ENG], vol. …

Microbial desulfurization of coal with Thiobacillus ...

Abstract Microbial desulfurization of Polish flame coal, characterized by high total concentration of sulfur and a high concentration of pyrite sulfur, was studied. The optimum conditions of the process were established. When using Thiobacillus ferrooxidans bacteria, the best results were obtained with desulfurization carried out on coal samples making 2.4 wt% of the extraction mixture at the ...

The study of Thiobacillus ferrooxidans on desulfurization ...

If the address matches an existing account you will receive an email with instructions to reset your password

Frontiers | Desulfurization of Vulcanized Rubber Particles ...

Currently, recycling or degradation treatments for tires are an enormous challenge. Despite efforts to dispose of or recycle it, rubber waste is increasing year by year worldwide. To create a rubber-recycling system, several researchers have proposed tire desulfurization. In this study, we compare two methods: one biological, using Acidobacillus ferroxidans in shake 250 ml flask experiments ...

Stimulatory Effect of Chemical Nutrients on ...

Stimulatory Effect of Chemical Nutrients on Desulfurization of Indial Coal by a Mutant Thiobacillus ferrooxidans X200. D. Sengupta, S. Ganguly* and A.K. Banik. Department of Chemical Engineering Biochemical Engineering Division, Biotechnology Laboratory, University of Calcutta, 92, A. P. C. Road, Kolkata - 700 009 India.

Devulcanization of natural rubber vulcanizates by Bacillus ...

Sphingomonas sp. was selected from coal mine soil and was then incubated with ground tire rubber (GTR) for 20 days. After devulcanization, the sulfur content was reduced 22.9% due to the breakdown of sulfide crosslinks [25]. Thiobacillus ferrooxidans from the soil of iron mine showed a strong sulfur ox-idizing capacity under an acidic condition ...

Application of thiobacillus ferrooxidans by bacterial ...

Jan 01, 2000· Application of thiobacillus ferrooxidans by bacterial desulfurization of coal. Author links open overlay panel P. Fečko * V. Sedláčková o

Desulfurization of Tabas coal by thiobacillus ferrooxidans

Desulfurization of Tabas coal by thiobacillus ferrooxidans. Minerals Engineering, 1996. M. Oliazadeh

10.1016/j.fuel.2013.07.076 | DeepDyve

Jun 11, 2020· Consequently, coal was replaced with other clean energy sources such as natural gas. Several efforts were reported to remove coal impurities especially sulfur and mineral matters (ash), [1–3] . Flotation is reported as a promising process for desulfurization of coal [4,5] .

Application of thiobacillus ferrooxidans by bacterial ...

The leaching of pyrite sulfur from coal employing Thiobacillus Ferrooxidans was studied in a continuous stirred tank reactor at a variety of dilution rates (0.02-0.11 h(-1)) and coal surface areas ...

Minerals | Free Full-Text | Bioleaching Coal Gangue with a ...

A mixed culture of A. ferrooxidans and A. thiooxidans isolated from a coal gangue dump was used to bioleach coal gangue in a column reactor to investigate the leaching of elements. The changes of metal ions (Fe, Mn and Cr) and sulfate in the leaching solution, elemental composition, mineral components and sulfur speciation of the coal gangue before and after bioleaching were analyzed by atomic ...

Effects of cell concentration and coal pretreatment on ...

The experiments were conducted under conditions that promote performance of the microorganism, i.e. temperature of 28°C and pH of 2.5. The procedure includes blending coal with Thiobacillus ferrooxidans in a laboratory scale reactor. Coal particles were sampled periodically during bio desulfurization.

Biodesulfurization of coal using Rhodococcus erythropolis ...

Jan 17, 2019· The desulfurization rate of organic sulfur was better than most of the reported results, 27-29 which indicated that the strain SX-12 has a good ability of organic sulfur removal. However, the desulfurization rate is lower than the shake flask test result, which may be a more complete contact area between bacteria and coal in the shaking test.

An Acidobacillus Ferrooxidans Mutant Tolerating the ...

An original strain of Acidobacillus Ferrooxidans which is separated from a kind of gold ore with optimum pH 2.0 and high activity in oxidizing ferrous has been treated by ultraviolet irradiation. A mutant strain is obtained after a series of directional filtration which optimum pH is around 1.2~2.0 and can grow at the extremely condition of ...

Domestication of Acidithiobacillus Ferroxidans and Its ...

Under these optimal conditions, a maximum coal desulfurization rate of 69.2% was achieved in a laboratory-scale continuously stirred tank reactor (5.0-L working volume) after the inoculation lasting 15 days, indicating great potential of A. ferrooxidans LX5 for future full-scale applications.

Microbial desulfurization of coal (Patent) | OSTI.GOV

@article{osti_5788098, title = {Microbial desulfurization of coal}, author = {Barvinchak, G and Detz, C M}, abstractNote = {A process for the removal of pyrite from coal wherein an aqueous slurry containing finely-divided coal particles is subjected to the action of iron and sulfur oxidizing microorganisms selected from the thiobacillus ferrooxidans group in a concentration range of between ...

--cnki

Desulfurization effect of pyrite sulfur in coal was studied by using the magnetizing cultivates the China coal series and non-coal series thiobacillus ferrooxidans.,。

Desulfurization of Coal by Thiobacillus Ferrooxidans ...

10%· Recently, Dugan and Apel (1978) achieved an almost complete removal of pyrite from coal by using a mixed culture of Thiobacillus ferrooxidans and Thiobacillus thiooxidans Capes et al. (1973) reported that the surface properties of pyrite and coal were changed during the microbiological leaching to such an extent that the separation of pyrite ...

DRENAJE ACIDO DE MINA - Studylib

TABLA 3. Tipos de drenajes de mina (Skousen and Ziemkiewics, 1996) TIPO I pH < 4,5 II < 6,0 III > 6,0 IV > 6,0 V > 6,0 DESCRIPCIÓN Alta concentración de Fe, Al, Mn, Zn, Cu, Ni, Pb, y otros metales. Alto contenido de oxígeno. Muy ácido (llamado Drenaje Ácido de Mina) Alta cantidad de sólidos disueltos.

Methods of Metal Recovery by Microorganisms (2 Methods)

By using the microorganisms Thiobacillus ferrooxidans and T. thiooxidans, the pyrite which contains most of the sulfur (80-90%) can be removed. Thus, by employing bioleaching, high sulfur coal can be fruitfully utilized in an environment friendly manner. In addition, this approach is quite economical also. Advantages of Bioleaching:

Bioleaching and Process

Sep 20, 2019· By using the microorganisms Thiobacillus ferrooxidans and T. thiooxidans, the pyrite which contains most of the sulfur (80-90%) can be removed. Thus, by employing bioleaching, high sulfur coal can be fruitfully utilized in an environment friendly manner. In addition, this approach is quite economical also.

10.1016/0016-2361(94)00019-N | DeepDyve

Jun 11, 2020· The process was run in thermostated shakers at temperatures varying from 20 to 40°C in the case of kinetic studies, and at 30°C in the case of coal desulfurization. Coal The coal to be desulfurized was flame coal from â Sierszaâ colliery, of particle size < 0.06 mm, showing a high total amount of sulfur and a high content of pyritic sulfur.

Continuous bacterial coal desulfurization employing ...

Jan 01, 1984· 10.1002/bit.260260117.abs The leaching of pyrite sulfur from coal employing Thiobacillus Ferrooxidans was studied in a continuous stirred tank reactor at a variety of dilution rates (0.02–0.11 h−1) and coal surface areas (0.25–1.0 m2/mL). The bacterial leaching rate was found to increase with increasing coal surface area concentration and increasing dilution rate. The bacterial ...

Microbial desulfurization of coal with Thiobacillus ...

May 01, 1995· Since desulfurization of coal mainly involves oxidation of the pyrite, a kinetic model of Fe 2+ oxidation by Thiobacillus ferrooxidans bacteria was proposed. The process was found to be described well by the equation derived for autocatalytic reaction of the first-order, both towards the inorganic substrate (Fe 2+) and the biocatalyst (protein).

Continuous bacterial coal desulfurization employing ...

The leaching of pyrite sulfur from coal employing Thiobacillus Ferrooxidans was studied in a continuous stirred tank reactor at a variety of dilution rates (0.02–0.11 h −1) and coal surface areas (0.25–1.0 m 2 /mL). The bacterial leaching rate was found to increase with increasing coal surface area concentration and increasing dilution rate.

Acidithiobacillus ferrooxidans - microbewiki

Jul 08, 2011· Acidithiobacillus ferrooxidans PubMed Genome of ATCC 23270 Genome of ATCC 53993. Description and Significance. A. ferrooxidans is a Gram negative rod shaped bacterium that is commonly found in deep caves or acid mine drainage, such as coal waste (10, 11, 12). These acidophilic bacteria thrive in optimal pH level of 1.5 – 2.5 where they ...

Microbial desulfurization of coal and oxidation of pure ...

Summary. Thiobacillus ferrooxidans andAcidianus brierleyi were capable of oxidizing pure pyrite as well as oxidizing sulfur in coal. First order reactions were

Get in touch

No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.

Call: +86-21-58386256

E-mail:[email protected]

About LDM

LDM got ISO international quality system certification, European Union CE certification and Russian GOST certification. The company has strong research and development strength and innovation.