Elemental composition of Nigerian coals - ScienceDirect
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 B represents dry coals.
Elemental characterization of Nigerian coals and their ...
Mean elemental summation (%) of the coals and ashes were 8.4 and 39.0, respectively, while average % ash content was 29.6, indicating that they were rich in potential toxic elements which could be emitted into the environment during coal combustion. This was corroborated by t-test results. It is found that pollution index (PI) values for V, Co, Mn, Ni, Cu, and Zn in the coal ash are greater than 1.0.
Trace elemental composition of Nigerian coal measured by ...
Mar 01, 1983 · 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.
PROXIMATE AND ELEMENTAL ANALYSIS OF SOME NIGERIAN …
The mean concentrations of the trace elements in the coal samples shows that Benue and Enugu coals are in the rank of sub- bituminous coal while Delta coal belong to the lignite or brown coal. This elemental analysis shows that Enugu and Benue coal deposits are of higher economic value that Delta coal …
(PDF) Comparative stone and Trace Element Composition ...
Nigerian coals are of cretaceous or early tertia ry age and are mostly located in the eastern part of the country. They They are mostly lignite and sub-bituminous, with some dep osits of high ...
Ultimate Analysis of some Nigerian coal
elemental composition of some Nigerian coal samples viz: Garin Maiganga (GMGA3 – top layer and GMGB – base layer), Chikila (CHK), Lamza (LMZ) and Afuzie (AFZ); in order to ascertain their ranks for appropriate utilization. Carbon, hydrogen and oxygen were theoretically (numerically)
Physicochemical characterization of low rank Nigerian coals
The results for the elemental composition and the calorific value of the coals are presented in Table 1 with all values reported in as received basis (a.r). Table 1: Ultimate analysis of low rank Nigerian Coals. Property Symbol GMG (wt. %) SKJ (wt. %) AFZ (wt. %) Carbon C 61.96 71.46 72.46 Hydrogen H …
COMPARATIVE stone AND TRACE ELEMENT …
Nigerian coals are of cretaceous or early tertiary age and are mostly located in the eastern part of the country. They are mostly lignite and sub-bituminous, with some deposits of high volatile bituminous coal …
Structural characterization of Nigerian coals by X-ray ...
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.
(PDF) Determination of trace elements in Nigerian coals by ...
Determination of trace elements in Nigerian coals by neutron activation analysis Article (PDF Available) in Journal of Radioanalytical and Nuclear Chemistry 87(1):67-67 · August 1984 with 29 Reads
COAL CHARACTERISTICS - Purdue University
Geologists also classify coal types according to the organic debris, called macerals, from which the coal is formed. Macerals (microscopic organic constituents found in coal) are identified (microscopically) by reflected light - the reflective or translucent properties of the coal …
Proximate and Ultimate Analysis | Mining | SGS
SGS uses the results from ultimate analysis tests to determine the elemental composition of the coal including moisture, ash, carbon, hydrogen, nitrogen, sulfur, and oxygen (by difference). We determine each element through stone analysis and express it as a percentage of the total mass of the original coal or coke sample.
Proximate analysis, rheological properties and ...
Jan 16, 2013 · Nigeria is endowed with large coal deposits, but some of them are yet to be explored. A combination of proximate analysis and rheological properties were used in characterizing the newly discovered Tai, Garin Maiganga and Shankodi-Jangwa coals in order to determine their suitable applications. Tai, Garin Maiganga and Shankodi-Jangwa coals were found to have moisture contents …
Characterization of Some Nigerian Coals for Power Generation
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, Ezimo ...
Chemical Analyses and Physical Properties of 12 Coal ...
5. Average abundance of stone 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
Ultimate Analysis of some Nigerian coal: Ranking and ...
Abstract. Ultimate analysis was carried out to determine the elemental composition of some Nigerian coal samples viz: Garin Maiganga (GMGA3 ndash top layer and GMGB ndash base layer), Chikila (CHK), Lamza (LMZ) and Afuzie (AFZ) in order to ascertain their ranks for appropriate utilization.
What are the stone & mineral composition (including ...
Coals are classified into three main ranks, or types: lignite, bituminous coal, and anthracite. These classifications are based on the amount of carbon, oxygen, and hydrogen present in the coal. Coal is defined as a readily combustible rock containing more than 50% by weight of carbon.
Elemental analysis of some Nigerian coal (Conference ...
@article{osti_199846, title = {Elemental analysis of some Nigerian coal}, author = {Balogun, F A and Nwankpa, A C and Owolabi, S A}, abstractNote = {Fast Neutron Activation Analysis (FNAA) by a 14 MeV Neutron generator and Energy Dispersive X-ray Fluorescence analysis (EDXRF) are used as complementary techniques to analyse samples from four different coal mines situated along the south …