Elemental Composition Of Nigerian Coals

Elemental composition of Nigerian coals - ScienceDirect

The results show that Nigerian coals are of weak or noncoking grades with low sulphur (0.52-2.04%) and high hydrogen (3.7-6.60%) contents. The coals possess properties which make them suitable feedstocks in gasification processes. They may also be used as …

The Types of Coal: Composition, Usage, and Energy Value

Coking vs. Steam: Coking coal, also known as metallurgical coal, has low sulfur and phosphorus content and can withstand high heat.Coking coal is fed into ovens and subjected to oxygen-free pyrolysis, a process that heats the coal to approximately 1,100 degrees Celsius, melting it and driving off any volatile compounds and impurities to leave pure carbon.

Evaluation of Elemental and Chemical Compositions of Some ...

Fuelwood species are a crucial part of the ecosystem; they provide energy for cooking, heating, and lightening for both domestic and industrial uses. As a result of their value, there is a need for frequent evaluation of elemental and chemical compositions for management and conservation purposes. Since fuelwood is the most common and cheapest source of energy in both rural and urban areas in ...

Results and Discussion

(WKP) coal from Benue State in Nigeria. The results showed that WKP contains high compositions of combustible elements and heating value but low pollutant elements. Furthermore, thermal degradation revealed high conversion efficiencies particularly under oxidative conditions as required for electric power generation through combustion. Keywords ...

Trace elemental composition of Nigerian coal measured by ...

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 certified values. The ...

(PDF) Mineral and trace element composition of the ...

Mineral and trace element composition of the Lokpanta oil shales in the Lower Benue Trough, Nigeria. Fuel, 2011. Dorrit Jacob. Download PDF. Download Full PDF Package. This paper. ... Coal-petrography and mineralogical studies of the Çardak coal deposit (SW Turkey) ...

Coal Properties, Sampling & Ash Characteristics

Coal Properties, Sampling & Ash Characteristics by Rod Hatt Coal Combustion, Inc . Versailles, KY 859-873-0188 Introduction The Powder River Coal is classified as sub -bituminous ranked coal. Coal rank is an indication of how much transformation the orig inal plant material has under gone. The American Society for Testing and

Elemental composition of Nigerian coals - ScienceDirect

Three analytical techniques (ASTM, FNAA and INAA) have been used to determine the major elemental composition, the percentage concentrations of Si, Fe, Al, as well as the concentrations of the trace elements Ca, K, Cl, Mg, Na and Ti of coals from seven major deposits in Nigeria. The results show that Nigerian coals are of weak or noncoking ...

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

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 fractions; it contains variable amounts of almost all the elements included in the periodic table (Christanis et al.,, 1998 ...

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

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 …

Elemental composition of Columbian coal ...

@misc{etde_5180743, title = {Elemental composition of Columbian coal. Elementsamenstelling van Columbiaanse steenkool} author = {Meij, R, and Krijt, G D} abstractNote = {Samples of coal from Columbia, which was combusted in 1986 and 1987, were analyzed in the laboratories of KEMA and the Netherlands Energy Research Foundation (ECN), Petten, Netherlands.

[PDF] Mineralogical and Physicochemical Assessment of ...

The physicochemical characterization of coal samples from deposits provides mineral distribution and composition data for utilization by scientists and policy makers. The characterization of coal samples of Ihioma coal deposits in Imo state, Nigeria was performed using proximate and ultimate analyses. XRD and ICP-AES were used to characterize the coal samples for potential energy utilization.

Determination Of Elemental Composition and Trace …

the major elemental composition and trace elements presents in of significant to its utility, also the impurities present in it can as well hindered its usage as industrial raw material. Limestone is one of the solid mineral resources in Nigeria and it is located in various parts of …

Main Analytical Techniques Used for Elemental Analysis in ...

of elemental analysis. This article provides an overview of the most sensitive techniques of elemental analysis such as atomic absorption/emission spectrometry, mass spectrometry, x-ray fluorescence, voltametry, and nuclear techniques. In addition, the article addresses some applications in a range of sample matrices.

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.

Physical and Plastic Properties of Three Nigerian Coals

The present global concern for new sources of energy has kindled a renewed interest in coal. In the option for maximizing the use of low grade coals in the production of metallurgical grade coke and various coal conversion processes, the qualities of three Nigerian coal samples, Onyeama, Garin Maiganga and Lafia-Obi, were assessed for their potential utilization in a blast furnace.

Elemental Composition of PM2.5 in Shiprock, New Mexico, a ...

Elemental Composition of PM2.5 in Shiprock, New Mexico, a Rural Community Located Near Coal-Burning Power Plants and Abandoned Uranium Mine Tailings Sites Description Fine particulate matter (PM 2.5 ) was collected in Shiprock, New Mexico, a small community located near two coal–fired power plants and numerous abandoned uranium mine tailing ...

Rare earth elements study of cretaceous coals from benue ...

Rare earth elements study of cretaceous coals from benue trough basin, Nigeria: modes of occurrence for greater sustainability of mining

Rare earth elements study of Cretaceous coals from Benue ...

Elemental relationships (such as Al2O3/TiO2, Cr/Th vs. Sc/Th, and Co/Th vs. La/Sc) suggest sediment-source regions with mafic, intermediate or felsic compositions. REE are either strongly fractionated or characterized by light-enrichment along with outlook coefficient (Coutl) values that suggest the coals are prospective substitute sources for ...

(PDF) Determination of trace elements in Nigerian coals by ...

Elemental composition of Nigerian coals. January 1985 · Energy. A. B. Borishade; L. O. Kehinde ... FNAA and INAA) have been used to determine the major elemental composition, the percentage ...

Coal Sampling and Analysis Standards

Coal Centre – Coal sampling and analysis standards 4 Abstract Each year, billions of tonnes of coal are traded in regional and international market for use in power generation, steel and cement making, and many other purposes. In commercial operations, the price of coal

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 ...

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.

CHARACTERISATION OF SOME NIGERIAN COALS FOR …

CHARACTERISATION OF SOME NIGERIAN COALS FOR POWER GENERATION BY Michael CHUKWU, B. ENG. (FUTO) 1997, PGDM (ABU) 2008 ... elemental carbon, volatile matter and hydrogen contents in decreasing order. ... Results of Ash Composition of the Five Coal Samples -----67 Table 4.2: Results of Ash Fusion Temperatures (in Oxidising Atmosphere) ----- 68 ...

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

The elemental composition and elemental ratios of the coal sample used in this study are listed in Table 5. The obtained values for C, N and H contents are within the range observed for various types of coal [66, 62]. The C/N ratios of coal sample used in this study are higher than those reported for two south Brazilian coals .

CHAPTER 4 RESULTS AND DISCUSSION - COAL ANALYSIS

4.3.2 Coal Quality Predictor model results for six coals and their density fractions from the different Highveld coal mines The van Alphen Consultancy Coal Quality Predictor model, which is also based on the chemical analysis (proximate, ultimate and elemental analyses) of the mineral matter and

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