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Chemical–structural properties of South African

15-10-2015  The chemical–structural properties of four South African bituminous coals were investigated using wide angle X-ray diffraction–carbon fraction analysis (WAXRD–CFA), attenuated total reflection Fourier transform infra-red spectroscopy (ATR–FTIR), solid state 13 C nuclear magnetic resonance spectroscopy (ss 13 C NMR), and high resolution transmission electron microscopy

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Chemical-structural properties of South African

For CO 2 storage in coal seams, this is necessary to determine the suitability of the coal seams and the stability of the adsorbed CO 2 in the geological disposal site.In this paper, the chemical-structural properties of four South African bituminous coals determined from WAXRD-CFA, ATR-FTIR, solid state 13 C NMR, and HRTEM techniques are reported.

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Chemical-structural properties of South African

The chemical-structural properties of four South African bituminous coals were investigated using wide angle X-ray diffraction-carbon fraction analysis (WAXRD-CFA), attenuated total reflection Fourier transform infra-red spectroscopy (ATR-FTIR), solid state 13 C nuclear magnetic resonance spectroscopy (ss 13 C NMR), and high resolution transmission electron microscopy (HRTEM).

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Chemical–structural properties of South African

Chemical–structural properties of South African bituminous coals: Insights from wide angle XRD–carbon fraction analysis, ATR–FTIR, solid state 13C NMR, and HRTEM techniques

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Adsorption properties of South African bituminous

Show simple item record. Adsorption properties of South African bituminous coals relevant to carbon dioxide storage

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properties of bituminous coal of south africa -

Properties of Coal – Productivity Portal. Properties of Coal The common coals used in Indian industry are bituminous and sub-bituminous coal. South African Coal; GCV (kcal/kg) 4,500 *

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Adsorption properties of South African

Show simple item record. Adsorption properties of South African bituminous coals relevant to carbon dioxide storage

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Adsorption properties of South African

An investigation was undertaken to determine the sorption properties of South African bituminous coals relevant to carbon dioxide storage in unmineable coal seams. Four bituminous coal samples from underground coal seams of Witbank, Highveld, and Tshipise-Pafuri coalfields were selected for this study. Detailed sample characterisation was conducted on the coal samples using both standard and

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repository.nwu.ac.za

Declaration vii Declaration I, Gregory Nworah Okolo , hereby declare that this thesis title: “Adsorption properties of South African bituminous coals relevant to carbon dioxide

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Mineralogy and Geochemistry of Sub-Bituminous Coal and Its ...

The coal we use is combustible sedimentary rock composed of carbon, hydrogen, oxygen, nitrogen, sulphur, and various trace elements (it has a carbonaceous content of more than 50 % by weight and more than 70 % by volume).

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Coal 101: An Overview of Bituminous Coal INN

In South Africa, Anglo owns and operates nine mines, six of which produce 23 million tonnes per year of thermal coal for the local market and for export purposes, as per the company’s website.

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COAL RESOURCES OF SOUTH AFRICA AND THEIR UNIQUE QUALITIES

Inherent Moisture 3,7 2,4 Volatile Matter %ad 30,5 28,9 Ash Content %ad 11,1 12,2 Fixed carbon 54,7 56,5. Combustion efficiency 83,0 66,0. C in ash% 4,4 15,5.

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Changes in chemical and physical properties of South ...

Background. •Coal is currently South Africa’s primary energy source and provides approximately 79% of the total energy needs[1]. •Coal will remain the primary energy source despite alternative energy generation methods such as nuclear power, wind and solar energy[2]. •Higher grade coals will last up to

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South Africa Bituminous Coal, South African

Made in South Africa Bituminous Coal Directory - Offering Wholesale South African Bituminous Coal from South Africa Bituminous Coal Manufacturers, Suppliers and Distributors at TradeKey

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Bituminous Coal Characteristics and Applications

29-01-2020  Characteristics of Bituminous Coal Bituminous coal contains moisture of up to approximately 17%. About 0.5 to 2 percent of the weight of bituminous coal is nitrogen. Its fixed carbon content ranges up to approximately 85 percent, with ash content up to 12% by weight.

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Chemical Analyses and Physical Properties of 12 Coal ...

elemental oxides. The five coal beds sampled from the Lower Pennsylvanian span the medium-volatile bituminous coal rank class. The rank and metamorphic grade of the coals are postulated to increase because of high pressure and temperature gradients associated with two processes: depth of burial through geologic time and structural deformation.

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Elucidation of the Structural and Molecular

Coals from the Witbank region (INY, UMZ, and G#5) have similar carbon contents (79.2–83.8 wt % d.a.f.), in contrast to a carbon content of 90.8 wt % (d.a.b.) for coal TSH. The free swelling index (FSI) indicated that the Witbank coals were noncoking while TSH was strongly coking.

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Dataset on the carbon dioxide, methane and

Data in Brief (2019-08-01) . Dataset on the carbon dioxide, methane and nitrogen high-pressure sorption properties of South African bituminous coals

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MINING ECONOMIC GEOGRAPHY: COAL MINING IN SOUTH AFRICA

• Bituminous coal is a dense sedimentary rock, usually black, but sometimes dark brown.

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The amenability of some Witbank bituminous ultra fine ...

cCentre for Applied Materials, Department of Chemistry, University of Pretoria, Pretoria 0001, South Africa Accepted 1 December 2003 Abstract Five ultra fine bituminous coals from the Witbank coalfield were studied. Selected chemical and physical properties, coal petrographic characteristics and mineralogical compositions of the coals were measured.

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Co-pyrolysis of South African bituminous coal and ...

Bituminous coal has a two stage, slow decomposition process that occurs at temperature ranges of 400–700 C and above 750 C with an activation energy of 81.8 and 649.3 kJ/mol, respectively.

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Coal 101: An Overview of Bituminous Coal INN

Bituminous coal is a relatively soft, black coal that is formed by the diagenetic and submetamorphic compression of peat bog material. Compared with other types of coal, it is of a higher quality...

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Mineralogy and Geochemistry of Sub-Bituminous

The coal we use is combustible sedimentary rock composed of carbon, hydrogen, oxygen, nitrogen, sulphur, and various trace elements (it has a carbonaceous content of more than 50 % by weight and more than 70 % by volume).

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South Africa Bituminous Coal, South African

Made in South Africa Bituminous Coal Directory - Offering Wholesale South African Bituminous Coal from South Africa Bituminous Coal Manufacturers, Suppliers and Distributors at TradeKey

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Carbon dioxide, methane and nitrogen high pressure ...

Figure 3: Distribution of large-scale industrial CO2 emissions in South Africa-2009 (MtonCO2 per annum)[10] Of the 440 Million tonnesof CO2 emitted per annum in South Africa: qAbout 320 MtonCO2 (72.7%) is sequestrable üAbout 32 Mton(7.2%) is capture-ready: does not require concentration prior to capture qOthers (about 92 Mton(21%))

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Chemical Analyses and Physical Properties of 12 Coal ...

elemental oxides. The five coal beds sampled from the Lower Pennsylvanian span the medium-volatile bituminous coal rank class. The rank and metamorphic grade of the coals are postulated to increase because of high pressure and temperature gradients associated with two processes: depth of burial through geologic time and structural deformation.

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Dataset on the carbon dioxide, methane and

Data in Brief (2019-08-01) . Dataset on the carbon dioxide, methane and nitrogen high-pressure sorption properties of South African bituminous coals

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CSIRO Research Publications Repository - Chemical ...

The chemical-structural properties of four South African bituminous coals were investigated using wide angle X-ray diffraction-carbon fraction analysis (WAXRD-CFA), attenuated total reflection Fourier transform infra-red spectroscopy (ATR-FTIR), solid state 13C nuclear magnetic resonance spectroscopy (ss 13C NMR), and high resolution transmission electron microscopy (HRTEM).

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MINING ECONOMIC GEOGRAPHY: COAL MINING IN SOUTH AFRICA

SOUTH AFRICAN COAL MINING TODAY In 2018, South Africa produced 252.6 million tonnes (Mt) of coal. Sales of coal were valued at R139.4 billion. The country’s coal mining industry employs over 86,900 people, who earn some R24.7 billion. Some 70% of the coal mined in South Africa is consumed domestically, with some 81% of electricity being generated

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Chemical and mineralogical characterization of a

Sasol utilizes a low-rank bituminous coal for steam and synthetic gas production. The ash produced is transported by water for further processing. Understanding the chemistry of coal and the resulting ash properties would allow a better understanding of the origin of high pH of water used during ash handling or transport. A main objective of this study was to identify the species responsible ...

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South Africa Reserves of anthracite and

In terms of U.S. coal classification, the international classification of brown coal includes lignite and lower-ranked subbituminous coal, whereas hard coal includes all higher rank coals. South Africa Reserves of anthracite and bituminous coal, 1965-2020

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Release of Nitrogenous Volatile Species from

The influence of typical South African coal attributes on the release of nitrogen into the volatile stream during pyrolysis was studied by utilizing three bituminous coals. The majority of South African coals are characterized by high mineral matter and are rich in inertinite maceral.

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RESEARCH ARTICLES Low-high temperature flue gas direct ...

in south African bituminous and anthracite coals: sorption capacity assessment Major Mabuza1,*, Kasturie Premlall2, Maurice Onyango2 and Michael O. Daramola3 1Department of Chemical Engineering, Vaal University of Technology, P.O. Box 3595, Secunda, 2302, Republic of South Africa

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South Africa Bituminous Coal, South African

Made in South Africa Bituminous Coal Directory - Offering Wholesale South African Bituminous Coal from South Africa Bituminous Coal Manufacturers, Suppliers and Distributors at TradeKey

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Elucidation of the Structural and Molecular

Advanced analytical techniques were performed on four South African coals, three noncoking and one coking, containing different maceral contributions (vitrinite contents ranging between 24 and 66 vol %, m.m.f.b.). Inertinite-rich (INY, UMZ) and vitrinite-rich (G#5 and TSH) coals were investigated to quantify differences and similarities in structural properties. Coals from the Witbank region ...

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PRB ASME PWR2009-81038

PRB coals differ in many properties from those of the commonly burned bituminous coals, including low heating value, low fusion temperature, and high ... SA DENOTES SOUTH AFRICA Coal Content Typical SA coal PRB GF PRB SF PRB CF Total moisture, % 7.3 29 24.5 25.7

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