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Solubilization of coal with olefins - ScienceDirect

Figure 2 shows time course of the coal solubilization with l~lecene at 150. The results well demonstrate that the solubilization mainly took place within a few minutes and then proceeded gradually. This interesting phenomenon suggests that coal consists essentially of two portions, differ- ent in reactivity.

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Cell-Free Solubilization of Coal by Polyporus versicolor

Solubilization of coal was demonstrated with filtrates (0.45-μm-pore-size filters) obtained from the broth in which Polyporus versicolor had grown. The rate and extent of solubilization were dependent on the age of the fungal cultures, the particle size of the coal, the pH of the filtrates, and the ...

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SOLUBILIZATION OF HUMIC ACIDS, LIGNITES AND COALS

Oct 24, 1972 · This invention relates to the solubilization of water-insoluble humic acids, lignites, and certain coals or water-insoluble coal derivatives. The coal derivatives, such as humic acids, are characterized by their alkali solubility due to the presence in their molecule of acidic functional groups but they are water-insoluble.

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Production of humic substances through coal-solubilizing ...

There is another procedure for solubilizing coal that does not rely on fungi: coal solubilization through bacteria. This process uses non-enzymatic mechanisms such as the production of surfactants, chelators, and alkaline substances (Hofrichter and Fakoussa, 2004).

  • Published in: Brazilian Journal of Microbiology · 2014Authors: Nelson Valero Valero · Liliana Cecilia Gomez Gomez · Manuel Pantoja · Ramiro RamirezAffiliation: National University of ColombiaAbout: BioinformaticsGet Price
Coal energy consumption in the U.S. 2018 | Statista

The statistic shows the consumption of coal energy for electricity generation in the United States between 1950 and 2018. In 2018, U.S. energy consumption derived from coal came to approximately ...

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Production of humic substances through coal-solubilizing ...

Oct 09, 2014 · There is another procedure for solubilizing coal that does not rely on fungi: coal solubilization through bacteria. This process uses non-enzymatic mechanisms such as the production of surfactants, chelators, and alkaline substances (Hofrichter and Fakoussa, 2004).

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

Materials and Methods. In the initial stage, 50 g of coal sample was mixed with 100 ml dil. HNO 3 (5%) solution in a 500 ml teflon beaker and stirred for an hour at 30˚C. In the next stage of leaching, 10 g of filtrate was further treated with 100 ml concentrated HF (10% and 40%) for one hour.

  • Published in: American Journal of Analytical Chemistry · 2014Authors: Manoj BalachandranAffiliation: Christ UniversityAbout: Leaching · Organic acid · Bioleaching · Coal · Fourier transform infrared spectroscopy[PDF]Get Price
Production of humic substances through coal-solubilizing ...

There is another procedure for solubilizing coal that does not rely on fungi: coal solubilization through bacteria. This process uses non-enzymatic mechanisms such as the production of surfactants, chelators, and alkaline sub-stances (Hofrichter and Fakoussa, 2004). Therefore this may be an alternative to prevent the depolymerization of the HS produced.

  • Published in: Brazilian Journal of Microbiology · 2014Authors: Nelson Valero Valero · Liliana Cecilia Gomez Gomez · Manuel PantojaAffiliation: National University of ColombiaAbout: Bioinformatics[PDF]Get Price
Solubilization ofLeonardite by Extracellular Fraction ...

The degree of leonardite solubilization by several sur-factants was determined. The surfactants tested included sodiumdodecylsulfate, Tween80(polyoxyethylenesorbitan monooleate), and cetylpyridinium chloride, each in 0.1 M sodium phosphate buffer (pH 5.2). Noneofthe surfactants tested solubilized leonardite significantly. Therefore, bio-

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WO2012034087A1 - Solubilization of coal or lignocellulose ...

The present methods deal with the solubilization of coal and lignocellulose biomass using pyrophosphates, polyphosphates, or derivatives thereof. WO2012034087A1 - Solubilization of coal or lignocellulose biomass - Google Patents

Liquefaction and solubilization of coals by microorganisms.

Studies on the microbial transformation of lignite and bituminous coals to low-MW compounds which would facilitate technical handling are described and discussed. During incubation with hard coals Pseudomonas strs released biosurfactants including lipopeptide and a glycolipid.

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The biosolubilization of lignite by Bacillus sp. Y7 and ...

Our results were similar to those reported for other coal-solubilizing microorganisms that could increase the pH of the growth medium to over 6 (and usually over 8) during the coal-solubilization process,, ; these organisms include Streptomyces and other bacteria, as well as fungi, and support the hypothesis that the microbial solubilization of coal is mediated by the production of alkali materials, .

Recent progress in cell-free solubilization of coal ...

Research programs on bioconversion of coal are presented. Research areas include: Microbial solubilization and desulfurization, recent progress in coal bioprocessing in the USA, recent progress in Europe, a research plan for biogasification, and biological conversion of synthesis gas into liquid fuels.

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Degradation of low rank coal by Rhizopus oryzae isolated ...

The AD-1 mediated coal degradation was optimized and showed a substantial release of organics at 1.5% glucose and 0.5% coal loading ratio within 11 days. The GC–MS analysis of the black liquid from coal solubilization showed a variety of organic compounds including aromatic acids, fatty acids, alkanes, amines, and amides.

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How much coal is left - U.S. Energy Information ...

Estimated recoverable reserves include only the coal that can be mined with today's mining technology after considering accessibility constraints and recovery factors. EIA estimates U.S. recoverable coal reserves at about 253 billion short tons, of which about 58% is underground mineable coal.

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Solubilization of Taiheiyo coal under mild ... - DeepDyve

Read "Solubilization of Taiheiyo coal under mild conditions without gaseous hydrogen: catalysis by trifluoromethanesulfonic acid, Fuel" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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US4914024A - Microbial solubilization of coal - Google Patents

Description. The microbial solubilization process of the present invention is capable of solubilizing various kinds of coal. Coals that are preferred for use in the present invention include North Dakota lignite, Mississippi lignite, Texas lignite, and Wyoming-Dakota (Wyodak) Subbituminous coal.

COAL BASED SOLAR CELLS - isgs.illinois.edu

solubilization of coal samples increased from 55% with a short 1-bromobutane modifier to above 66% for longer 1-bromododecane modifiers. This optimal modification methodology using potassium naphthalenide was extended to include alkylbromides that contain COOH groups on the second terminus (e.g., 1-bromododecanoic acid).

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Large scale solubilization of coal and ... - Digital Library

In order to develop a system for a large scale coal solubilization and its bioconversion to utilizable fuel, we plan to clone the genes encoding Neurospora protein that facilitate depolymerization of coal. We also plan to use desulfurizing bacteria to remove the sulfur in situ and use other microorganisms to convert biosolubilized coal into utilizable energy following an approach utilizing ...

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Biological solubilization of coal in aqueous and ...

Current investigations into the biological solubilization of coal with microorganisms focus on the production of solubilizing activity in fungi. Test organisms for this work include a species of the yeast Candida previously isolated from a lignite outcrop, and P. chrysosporium, a filamentous higher fungus which has played a major role in lignin biodegradation research.

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