elemental composition of nigerian coals

elemental composition of nigerian coals

Elemental composition of Nigerian coals - ScienceDirect

Jan 01, 1985  A detailed description of the methodology and analysis, as well as results showing the concentrations of the 35 trace elements encountered in Nigerian coals, have been reported elsewhere.13 The Elemental composition of Nigerian coals 37 Table 1. Major elemental compositions of Nigerian coals (ASTM); row A represents as received coals, while row ...

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Trace elemental composition of Nigerian coal measured by ...

高达10%返现  The instrumental neutron activation analysis (INAA) technique has been used to determine 17 major, minor, and trace elements in samples of the three major sources of Nigerian coal. The NBS Standard Reference Material, Coal SRM 1632, was also analyzed, for the purpose of verifying the accuracy of the method. The results obtained with it were in good agreement with the NBS

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PROXIMATE AND ELEMENTAL ANALYSIS OF SOME NIGERIAN

PROXIMATE AND ELEMENTAL ANALYSIS OF SOME NIGERIAN COAL 34 DEPOSITS Ezeh Ernest1 and Okeke Onyeka2 1Chemical Engineering Dept., Nnamdi Azikiwe University, Awka. 2Plastic production unit, Scientific Equipment Development Institute, Enugu. ABSTRACT: Studies were carried out on the proximate and elemental contents of coal

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Ultimate Analysis of some Nigerian coal

This paper reports the elemental composition of some Nigerian coals and its application in ranking of the coals. Objectively, this will indicate the area of utilization or application. II. MATERIALS AND METHOD 2.1 Material 4 The materials used for this study include five different coal samples collected from Garin Maiganga (GMG A3 – top

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Trace elemental composition of Nigerian coal measured by ...

Jan 09, 2007  Architecture and Architectonics Biology and Life Sciences Chemistry and Chemical Engineering Materials and Applied Sciences Medical and Health Sciences Social ...

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COMPARATIVE CHEMICAL AND TRACE ELEMENT

Keywords: Nigerian coal, South African coal, Coal fly ash, Major oxides, Trace elements, Mineralogy. 1. INTRODUCTION Coal is a combustible carbonaceous rock that contains varying amounts of carbon, hydrogen, nitrogen, oxygen, sulphur and mineral matter and nearly 8 gigatonnes per year of coal is produced globally at ∼0.05 $/kg) [1]. It is an

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MINERALOGICAL COMPOSITION OF NIGERIAN COALS Semantic

ABSTRACT The results of a study aimed at evaluating the mineral constituents of four Nigerian coals (a Iignite, a subbituminous and two high volatile bituminous coals) are reported in this paper. The low temperature ash (LTA) obtained from the coals was analyzed using scanning electron microscopy (SEM) and x-ray diffraction (XRD). X-ray fluorescence spectra obtained from SEM showed the ...

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Data evaluation of trace elements determined in Nigerian ...

May 01, 2004  Finally, clustering of Nigerian coals showed that coals known to have been formed from the same geological formation (Onyeama, Enugu, Ogbete, Afikpo) need not have same elemental composition for them to remain in the same cluster. This suggests possible failure of band development in explaining coalification at the Benue-Trough.

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Nigerian Coal Corporation - Bureau of Public Enterprises - BPE

Location of the Industry – Enugu Ownership Structure – 100% Govt Owned The Nigerian Coal Corporation was established in 1950 and it is 100% owned by the FGN. The headquarter is located at No 25 Okpara Avenue, Enugu. SECTOR DATA Coal exploration in Nigeria started as far back as 1916. Available data show that coal

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Trace elemental composition of Nigerian coal measured by ...

Jan 09, 2007  Architecture and Architectonics Biology and Life Sciences Chemistry and Chemical Engineering Materials and Applied Sciences Medical and Health Sciences Social ...

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Structural characterization of Nigerian coals by X-ray ...

Dec 01, 2010  Six Nigerian coals collected from four coal fields namely; Okaba, Onyeama, Chikila and Lafia Obi, coded OK, OY, CHI and LA, respectively were analyzed. The coals range from sub-bituminous to bituminous. The samples were ground into powder (72 mesh) and analyzed for moisture, ash and elemental composition.

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Physicochemical characterization of low rank Nigerian coals

This study is aimed at investigating the physicochemical properties of low rank Nigerian coals. The coal samples were examined using bomb calorimetry, ultimate and proximate analyses to determine the heating value, elemental composition and physicochemical properties. The calorific values of the coals were; 23.74 MJ/kg for GMG; 27.34 MJ/kg for SKJ and 30.52 MJ/kg for AFZ.

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Data evaluation of trace elements determined in Nigerian ...

May 01, 2004  Finally, clustering of Nigerian coals showed that coals known to have been formed from the same geological formation (Onyeama, Enugu, Ogbete, Afikpo) need not have same elemental composition for them to remain in the same cluster. This suggests possible failure of band development in explaining coalification at the Benue-Trough.

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CHEMICAL AND PYROLYTIC THERMOGRAVIMETRIC

Basically, the elemental contents of the coals were observed to be within the limits typically observed for coals in literature [18]. Furthermore, the higher values of HHV, C, and lower H, M, and O in the AFZ coal indicates a higher maturity and rank compared to the SKJ coal. Tab. 1 Chemical Fuel Properties of Bituminous Nigerian Coals

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Characterization of Some Nigerian Coals for Power Generation

May 12, 2016  3.2. Ultimate Analysis. Results obtained from the ultimate analysis carried out on the five coal samples were evaluated on air-dried basis. Oxygen was calculated by difference on an air-dried basis using ().The elemental composition of carbon, hydrogen, nitrogen, sulphur, and oxygen in the coal samples is shown in Table 2.The percentages of the elemental carbon of Odagbo, Owukpa,

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Physicochemical characterization of low rank Nigerian coals

Abstract. This study is aimed at investigating the physicochemical properties of low rank Nigerian coals. The coal samples were examined using bomb calorimetry, ultimate and proximate analyses to determine the heating value, elemental composition and physicochemical properties.

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v116n2a8 Determination of mineral matter and elemental ...

Determination of mineral matter and elemental composition of individual macerals 170 The inorganic elements within the organic structure of coal macerals may react in a different way to the same elements occurring in the discrete mineral particles (Falcone et

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What is coal made of? what is the chemical formula of coal ...

They can be up to half the mass of this type of coal. The elemental composition minus inorganic and volatile substances is as follows: Carbon 50-75%. Oxygen 26-37%. Hydrogen 3-5%. Nitrogen 0-2%. Sulfur 0.5-3%. Coal. By the time of formation of this type of coal is as follows after the brown. It has a black or gray-black color, as well as a ...

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(PDF) Physico-Chemical Characterization and Speciation of ...

ABSTRACT Studies of physico-chemical characterization, and chemical speciation of sulphur of seven Nigerian coal samples have been undertaken. The seven coal samples originated from South-east, North-central and North-east of Nigeria where there are

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Chemical Analyses and Physical Properties of 12 Coal ...

5. Average abundance of chemical elements and oxides in 12 whole coal and ash samples from Virginia and West Virginia compared with 331 Appalachian region and 509 bituminous coal samples_____ 18 6. Major-, minor-, and trace-element composition of 12 coal samples from Virginia and West Virginia on a whole-coal basis_____ 20

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Structural Characterization of Selected Indian Coals by X ...

Both parameters measure the degree of maturity in coals. The Elemental carbon contents for the coals are plotted against their fa, d 002, rank and Lc values in Fig. 9. There is good correlation between the elemental carbon content and structural parameters (R 2 = 0.97, 0.92, 0.95 and 0.95) of the coal

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Elemental composition of vegetables cultivated over coal ...

The differences in the elemental composition of the soils and vegetable species between the two sites (farming organic and coal-mining area) as well as in the livers of mice exposed to vegetable juice from the coal-mining area and organic farming area were evaluated by Student’s t test (P ≤ 0.05) in the GraphPad Prism software package ...

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Assessment of Some Nigerian Coals for Metallurgical ...

Assessment of Some Nigerian Coals for Metallurgical Application I. O. Akpabio 1, ... reducing the iron ore to its elemental form. ... and in the blast furnace, the ash influences slag volume and composition. An ash content of less than 10% is recommended for a good coking coal [8]. Industrial

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Elemental composition and molecular structure of ...

Botryococcus-derived alginites from the Westphalian Skyline, No. 5 Block, Leatherwood (eastern Kentucky) and Breckinridge (western Kentucky) coal beds have been analyzed for elemental composition and functional group distribution using an electron microprobe and micro-FTIR, respectively. The alginites from Kentucky show a carbon range of 81.6 to 92% and oxygen content of

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An Assessment of the Major Elemental Composition and ...

Limestone samples from Yandev and Odukpani limestone deposits in Nigeria were subjected to elemental analysis by Proton Induced X-ray Emission (PIXE) technique with the aim of broadening any database information on their elemental composition and concentration and accessing the extent of their environmental friendliness.

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Elemental composition of vegetables cultivated over coal ...

Elemental composition was analyzed by particle-induced X-ray emission (PIXE) method. Concentrations of Mg, S, and Ca of mice subjected to one-time consumption of broccoli and concentrations of these same elements plus Si of mice receiving kale were higher in the coal-mining area. Concentrations of P, K, and Cu were increase after chronic ...

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ENERGY OUTPUT ASSESSMENT OF LAFIA-OBI COAL IN A

ENERGY OUTPUT ASSESSMENT OF LAFIA-OBI COAL IN A FLUIDIZED BED COMBUSTOR E. O Ilyas, et al Nigerian Journal of Technology Vol. 37, No. 4, October, 2018 970 Table 1: Proximate and Ultimate Analysis of Lafia-Obi coal Percentage Composition from different Authors (%)

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Humic acids from oxidized coals I. Elemental composition ...

Humic acids from oxidized coals I. Elemental composition, titration curves, heavy metals in HA samples, nuclear magnetic resonance spectra of HAs and infrared spectroscopy Chemosphere. 2004 Feb;54(8):1237-45. doi: 10.1016/j.chemosphere.2003.10.020. Authors Monika ...

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Evaluation of Pollution Potentials and Fuel Properties of ...

carried out on Nigerian coals. Sonibare et al., [3], studied the burning and volatile profiles of Nigerian coals with a view of assessing their suitability as future source of energy. The apparent activation energies of the combustion and pyrolysis reactions of the coals varied from 68.5 to 90.9 kJ mol-1 and 34.1 to 57.2 kJ mol respectively.

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Coal Ash: Characteristics, Management and Environmental

Chemical Composition . The chemical composition of coal ash is determined primarily by the chemistry of the source . coal and the combustion process. Because ash is derived from the inorganic minerals in [he coal, such as quartz, feldspars, clays, and metal oxides, the major elemental composition of coal ash is

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v116n2a8 Determination of mineral matter and elemental ...

Determination of mineral matter and elemental composition of individual macerals 170 The inorganic elements within the organic structure of coal macerals may react in a different way to the same elements occurring in the discrete mineral particles (Falcone et

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A Comprehensive Model for Predicting Elemental

•Develop set of correlations predicting the elemental composition of primary pyrolysis products (char and tar) at a variety of conditions and for a variety of coals •Introduce this in a two mixture fraction description for coal gas in large-scale simulations •Current

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The geochemistry of lignite from the Neogene Ogwashi-Asaba ...

Nigeria and is used mainly as a substitute for wood as fuel in domestic cooking. The pertinent literature on Nigerian lignite deposits’ major and trace element composition is scarce (Adedosu et al., 2007; Olobaniyi and Ogala, 2011). Coal is heterogeneous sediment having both organic and inorganic

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Determination of radionuclides and elemental composition ...

Feb 28, 2013  Radiochemical and elemental analysis of clay soils collected from different locations within Ekiti State have been performed in this study using gamma and XRF spectrometric measurements. The results of this study show that the mean concentrations of uranium ranged from 2.2 ± 1.0 mg/kg to 3.2 ± 1.1 mg/kg, that of thorium ranged from 4.0 ± 0.5 mg/kg to 5.7 ± 1.7 mg/kg, while potasium ...

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Chapter 8 PETROLEUM

The elemental composition of petroleum is much less variable than that of coal: 83-87% carbon, 11-16% hydrogen, 0-4% oxygen plus nitrogen, and 0-4% sulfur. Note that most crude oils contain substantially more hydrogen than coals. Only a brief discussion is needed here regarding the distribution of these elements among the thousands of

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Heavy Metals Concentrations in Coal and Sediments from ...

elements are detrimental to aquatic biota or human health arsenic has been found to have an effect on the liver by causing a disease called cirrhosis (Hutton, 1987). Coal contains diverse amounts of trace elements in their overall composition (Thomas, 1992). The sediments of the sea station of the Indian

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