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reagents for soubilization of coal

New Reagents and Reactions for Desulfurization of Coal

New Reagents and Reactions for Desulfurization of Coal Shan Wang This research is a product of the graduate program inChemistryat Eastern Illinois University.Find out more about the program. This is brought to you for free and open access by the Student Theses Publications at The Keep. It has been accepted for inclusion in Masters Theses

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reagents for soubilization of coal

solubilization or extraction reagent of choice for the fossil fuels, such as coal, oil shale, ... thus attaining the reagent-to-coal ratio of 0.5 to 1. Nuclear Cytoplasmic Extraction Kit -

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2 REAGENTS IN COAL PREPARATION: WHERE DO THEY GO?

collector that partitions to coal products, this is another likely scenario for some PAHs (Liu et al. 2008). Following atmospheric deposition or disposal of fly ash, coal processing reagents or their by-products could move through terrestrial and aquatic ecosystems via hydraulic or biologic transport processes.

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Solubilization of Coal SpringerLink

  Solubilization can be used to facilitate chemical structure studies or it may be the first stage of a coal liquefaction process. Despite the long history of studies on coal dissolution there are many aspects of solubilization that need further study to achieve a complete understanding of the phenomena, mechanisms, and conditions which control ...

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Solubilization of coal with hydrogen sulfide and carbon ...

There is a need for efficient and economical reagents for the hydrogenation and solubilization of coal and conversion of coal tar as above. In accordance with this invention, the solubilization of coal and conversion of coal tar to products of lower molecular weight, effected in liquid or fused reaction medium using a hydrogenation reactant ...

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Desulfurization of Coal - EOLSS

In coal combustion, to generate electric power and process heat, the sulfur is emitted as SO2, which is seen as one of the main causes of acid rain. This effect has led to an interest in the three main methods of removing coal sulfur: coal cleaning, in-bed desulfurization, and flue gas desulfurization. Coal cleaning includes physical, chemical,

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Use of chemically modified enzymes in organic solvents

Apr 21, 1994  Reductive enzymes can be used to enhance the conversion of coal to liquids. This can be carried out in both aqueous and organic media, but, in the lat

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"New Reagents and Reactions for Desulfurization of Coal ...

Searching for new reagents and reactions for pre-combustion desulfurization of coal was the goal of this work. In this study, modifications of mild desulfurization reactions, which were found to work with organosulfur model compounds, have been investigated systemetically for improvements in sulfur removal and reduction of reagent cost. The screening of reagents and new reactions utilized ...

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Optimized lysis buffer reagents for solubilization and ...

Reagents that facilitate solubilization of cells and tissues while preserving the biological activity of their constituents play a major role in various applications including drug delivery. Such reagents are necessary for the accurate determination of cellular and tissue concentrations of proteins,

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Optimized lysis buffer reagents for solubilization and ...

Abstract Reagents that facilitate solubilization of cells and tissues while preserving the biological activity of their con-stituents play a major role in various applications including drug delivery.

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Solubilization of coal with olefins, supplementary ...

Apr 01, 1986  Degrees of solubilization were estimated on the basis of weights of pyridine-insoluble components of the treated coals [ 1, 2]. It is not at all a straightforward task to determine the evidence of alkylation of coal with olefin by using trifluoromethanesulfonic acid (TFMS). Figure 1 shows FT-IR spectra of the treated coal samples.

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US9528061B2 - Solubilization of coal or lignocellulose ...

US9528061B2 US13/229,504 US201113229504A US9528061B2 US 9528061 B2 US9528061 B2 US 9528061B2 US 201113229504 A US201113229504 A US 201113229504A US 9528061 B2 US9528061 B2 US 9528061B2 Authority US United States Prior art keywords coal pyrophosphate hypochlorite permanganate sodium Prior art date 2010-09-10 Legal status (The legal status is an assumption and

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Isolation and Characterization of Coal Solubilizing ...

Microbial solubilization of coal has been considered as a promising to convert raw coal into valuable products. In the present study, initially a total of 50 different aerobic bacterial and fungal isolates have been isolated from soil, coal and water samples of Dulmial Coal Mines, Chakwal, Pakistan, but on the basis of solubilization potential, only four isolates were selected for ...

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Detergents for Protein Solubilization Thermo Fisher ...

Detergents are amphipathic molecules containing both a nonpolar "tail" having aliphatic or aromatic character, and a polar "head." The ionic character of the polar head group forms the basis for broad classification of detergents; they may be ionic (charged, either anionic or cationic), nonionic (uncharged) or zwitterionic (having both positively and negatively charged groups, but with a net ...

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Protein Solubilization LSR Bio-Rad

Protein solubilization is the process of breaking interactions involved in protein aggregation, which include disulfide bonds, hydrogen bonds, van der Waals forces, ionic interactions, and hydrophobic interactions. If these interactions are not prevented, proteins can aggregate or precipitate, resulting in artifacts or sample loss.

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Role of Infrared Spectroscopy in Coal Analysis—An ...

3.2. Vibrational Mode Analysis of Carboxylic Acid Leached Coal. The vibrational spectroscopy is a pre-requisite for the analysis of functional groups in a complex material, which triggered the identification of prominent bands in virgin and leached bituminous coal (and Figure 3).Intense bands observed at 540 cm −1, 3618 cm −1 and 3696 cm −1 are attributed to clay, silicate, kalonite and ...

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Steam pretreatment for coal liquefaction (Journal Article ...

Dec 31, 1996  Steam pretreatment is the reaction of coal with steam at temperatures well below those usually used for solubilization. The objective of the proposed work is to test the application of steam pretreatment to coal liquefaction. A 300 ml stirred autoclave for liquefaction tests is being installed.

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Upgrading difficult-to-float coal using microemulsion ...

May 01, 2012  Oxidized coals are difficult to float. Therefore, in this paper, a special flotation procedure was investigated for upgrading this type of coal. The procedure is called direct contact flotation. It relies on mixing dry coal either with pure (anhydrous) flotation reagent(s) or microemulsion. By applying the new direct contact flotation procedure, a coal yield reaching > 95% using anhydrous ...

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Exploratory Research on Novel Coal Liquefaction Concept ...

8 Selected Coal Solubilization Tests, 45 mL Microautoclave Scale 73 9 Coal Conversion as a Function of Reaction Temperature, Hydride Ion Reagent/Dry Coal Ratio, and Residence Time - Freedom Mine North Dakota Lignite (Low Ash) 74 10 Coal Conversion as a

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Method for converting coal to biogenic methane ...

Because coal is a polymer, a reservoir of smaller molecular weight organic compounds exists within coal deposits. The depolymerization and solubilization of coal is the rate-limiting step for the production of secondary biogenic coal bed methane.

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indonesia coal industry book

Jual Indonesian Coal Book 2020/2021 Jakarta Utara. This full color book provides a comprehensive and easytouse reference containing detailed and uptodate information on Indonesian coal industry This edition is definitely a mustbuy reference book for not only business executives, prospective coal investors, players, but also research centers and consultants

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REAGENTS USED IN COAL PREPARATION. — Penn State

There is a broad range of chemical reagents of potential use to the coal preparation industry: flotation frothers, flotation collectors (for coal, ash minerals or pyrite) and collector-assisting (conditioning) agents, flotation depressants (for coal, ash minerals or pyrite), pH regulating agents, acid mine drainage treatment chemicals, flocculants, filtration aids, dispersants, dust ...

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"New Reagents and Reactions for Desulfurization of Coal" by

Searching for new reagents and reactions for pre-combustion desulfurization of coal was the goal of this work. In this study, modifications of mild desulfurization reactions, which were found to work with organosulfur model compounds, have been investigated systemetically for improvements in sulfur removal and reduction of reagent cost. The screening of reagents and

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Eco Friendly and Cost-Effective Reagent for Coal Flotation

[2] is a major challengein coal cleaning process when compared to other forms of fuels [3]. Modern mechanized coal mining techniques generate large amount of fine particles that have to be recovered in coal washing plants [4]. Fine coal processing has always been a problematic and costlier than the cleaning of coarse coal [5]. Froth flotation

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Choosing the correct flotation reagents for coal recovery -

Oct 11, 2010  Significantly, Ekofol which is a combination collector-frothing reagent achieved an 8% higher recovery rate in laboratory and on-site testing in South Africa than local reagents. Kottmann says that in Germany coal is extracted from depths of up to 1000 to 1200 metres below surface and, for this reason flotation reagents are highly developed to ...

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A single freeze-thawing cycle for highly efficient solubilization of

Mild solubilization of inclusion body proteins using the freeze-thawing method is simple, highly efficient and generally applicable. The method can be utilized to prepare large quantities of bioactive soluble proteins from inclusion bodies for basic research and industrial purpose.

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US5084160A - Method for solubilization of low-rank coal using

A method is provided for isolating a less than 5,000 dalton molecular weight extracellular product from Coriolus versicolor. The extracellular product is useful for biosolubilizing low-rank coals to form water-soluble products.

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Solubilization of coal with olefins, supplementary experiments: Reply to

Apr 01, 1986  Degrees of solubilization were estimated on the basis of weights of pyridine-insoluble components of the treated coals [ 1, 2]. It is not at all a straightforward task to determine the evidence of alkylation of coal with olefin by using trifluoromethanesulfonic acid (TFMS). Figure 1 shows FT-IR spectra of the treated coal samples.

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(PDF) Coal solubilization through c-alkylation - ResearchGate

C-Alkylation is an attractive process for the disruption of the intermolecular polarization forces that contribute to the binding of coal molecules in the solid state (1,2).

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US3700728A - Solubilization of humic acids, lignites and coals -

A process for the preparation of water-soluble products from humic acids, lignites and pre-oxidized coals which are reacted with a sulfonating agent to form a sulfite or a bisulfite in situ, in an alkaline medium. The water-soluble product is useable as a well-drilling fluid.

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Reducing and Denaturing Reagents Thermo Fisher Scientific - AU

Proteases and Protein-Cleaving Reagents › Reducing and Denaturing Reagents › These purified powders, convenient solutions, and solid-phase resins of disulfide reducing agents, including DTT, BME and TCEP, can be used to stabilize free sulfhydryls (cysteines) and to reduce disulfide bonds in peptides and proteins.

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Green Source Energy

A4: The proprietary reagents are recyclable, low in toxicity and volatility, and less costly compared to other known liquefaction, solubilization and/or extraction reagents for hydrocarbons. The proprietary reagent penetrates or diffuses into particles, pieces, blocks or chunks of hydrocarbon-containing

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P. Somasundaran,* Namita Deo,* and K.A. Natarajant -

Traditional flotation reagents are known to increase the flotation recovery of coal, total sulfur content, and total ash content. In contrast, bacterial conditioning produces no effect on coal flotation but decreases the total sulfur content (Botang, 1997). . Biomass can act as a flotation reagent for the beneficiation of nonsulfide minerals ...

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