Petrological and organic geochemical properties of lignite from the Kolubara and Kostolac basins, Serbia: Implication on Grindability Index
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2014
Authors
Životić, DraganaBechtel, Achim
Sachsenhofer, Rainhard
Gratzer, Rainhard
Radić, Dejan
Obradović, Marko
Stojanović, Ksenija
Article (Published version)
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The influence of different coal lithotypes on grindability has been investigated using lignite from two of the most important Upper Miocene lignite basins in Serbia (Kolubara and Kostolac). Yellow xylite-rich types demonstrated the most negative impact on Hardgrove Grindability Index (HGI). All different types of xylite-rich coal, as well as total xylite-rich coal from the Kolubara basin have a negative influence on the grindability properties, while only the yellow type of xylite-rich coal from the Kostolac showed a negative impact on HGI. Matrix coal does not show a clear effect on HGI. A negative correlation between textinite content and HGI is observed in both basins, whereas contents of other macerals do not show influence on grindability properties. Content of total organic carbon demonstrated the negative impact on HGI. Correlation analysis indicates that the negative impact of the yellow type of xylite-rich coal and the sum of total xylite-rich coal on the grindability properti...es partly can be related to content of total organic carbon and high amount of soluble organic matter. Matrix lithotype does not show any significant correlation with bulk geochemical parameters in both basins. The peat-forming vegetation of all samples from both basins were dominated by decay-resistant gymnosperm (coniferous) plants, belonging to one or several of the families Taxodiaceae, Podocarpaceae, Cupressaceae, Araucariaceae, Phyllocladaceae and Pinaceae. Lignite from the Kolubara basin is characterized by a higher contribution of angiosperm vegetation than coal from the Kostolac basin. Peatification of the Kolubara coal occurred under more oxic conditions than the Kostolac one. Analysis of biomarkers indicated that the negative impact of all types of xylite-rich coal from the Kolubara on HGI can be related to the higher proportion of angiosperms, abundance of mid-chain n-alkanes and sesquiterpenoids, aromatization of non-hopanoid triterpenoids and hopanoids, and intense degradation of wood tissues in a more oxic environment. The positive impact of matrix coal on HGI in the Kolubara samples can be attributed to elevated content of non-aromatic hopanoids and low amounts of aromatic non-hopanoid triterpenoids and sesquiterpenoids, which seems to hinder the grindability properties.
Keywords:
Xylite-rich coal / Organic matter / Matrix coal / Lignite / Grindability / BiomarkerSource:
International Journal of Coal Geology, 2014, 131, 344-362Publisher:
- Elsevier, Amsterdam
Funding / projects:
- Earth-Science Studies in Central and South-Eastern Europe (CEEPUS)
- Geochemical investigations of sedimentary rocks - fossil fuels and environmental pollutants (RS-MESTD-Basic Research (BR or ON)-176006)
- Pollution Reduction from Thermal Power Plants of the Public Enterprise “Electric Power Industry of Serbia” (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-42010)
DOI: 10.1016/j.coal.2014.07.004
ISSN: 0166-5162
WoS: 000343842800029
Scopus: 2-s2.0-84904664378
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Mašinski fakultetTY - JOUR AU - Životić, Dragana AU - Bechtel, Achim AU - Sachsenhofer, Rainhard AU - Gratzer, Rainhard AU - Radić, Dejan AU - Obradović, Marko AU - Stojanović, Ksenija PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/1924 AB - The influence of different coal lithotypes on grindability has been investigated using lignite from two of the most important Upper Miocene lignite basins in Serbia (Kolubara and Kostolac). Yellow xylite-rich types demonstrated the most negative impact on Hardgrove Grindability Index (HGI). All different types of xylite-rich coal, as well as total xylite-rich coal from the Kolubara basin have a negative influence on the grindability properties, while only the yellow type of xylite-rich coal from the Kostolac showed a negative impact on HGI. Matrix coal does not show a clear effect on HGI. A negative correlation between textinite content and HGI is observed in both basins, whereas contents of other macerals do not show influence on grindability properties. Content of total organic carbon demonstrated the negative impact on HGI. Correlation analysis indicates that the negative impact of the yellow type of xylite-rich coal and the sum of total xylite-rich coal on the grindability properties partly can be related to content of total organic carbon and high amount of soluble organic matter. Matrix lithotype does not show any significant correlation with bulk geochemical parameters in both basins. The peat-forming vegetation of all samples from both basins were dominated by decay-resistant gymnosperm (coniferous) plants, belonging to one or several of the families Taxodiaceae, Podocarpaceae, Cupressaceae, Araucariaceae, Phyllocladaceae and Pinaceae. Lignite from the Kolubara basin is characterized by a higher contribution of angiosperm vegetation than coal from the Kostolac basin. Peatification of the Kolubara coal occurred under more oxic conditions than the Kostolac one. Analysis of biomarkers indicated that the negative impact of all types of xylite-rich coal from the Kolubara on HGI can be related to the higher proportion of angiosperms, abundance of mid-chain n-alkanes and sesquiterpenoids, aromatization of non-hopanoid triterpenoids and hopanoids, and intense degradation of wood tissues in a more oxic environment. The positive impact of matrix coal on HGI in the Kolubara samples can be attributed to elevated content of non-aromatic hopanoids and low amounts of aromatic non-hopanoid triterpenoids and sesquiterpenoids, which seems to hinder the grindability properties. PB - Elsevier, Amsterdam T2 - International Journal of Coal Geology T1 - Petrological and organic geochemical properties of lignite from the Kolubara and Kostolac basins, Serbia: Implication on Grindability Index EP - 362 SP - 344 VL - 131 DO - 10.1016/j.coal.2014.07.004 ER -
@article{ author = "Životić, Dragana and Bechtel, Achim and Sachsenhofer, Rainhard and Gratzer, Rainhard and Radić, Dejan and Obradović, Marko and Stojanović, Ksenija", year = "2014", abstract = "The influence of different coal lithotypes on grindability has been investigated using lignite from two of the most important Upper Miocene lignite basins in Serbia (Kolubara and Kostolac). Yellow xylite-rich types demonstrated the most negative impact on Hardgrove Grindability Index (HGI). All different types of xylite-rich coal, as well as total xylite-rich coal from the Kolubara basin have a negative influence on the grindability properties, while only the yellow type of xylite-rich coal from the Kostolac showed a negative impact on HGI. Matrix coal does not show a clear effect on HGI. A negative correlation between textinite content and HGI is observed in both basins, whereas contents of other macerals do not show influence on grindability properties. Content of total organic carbon demonstrated the negative impact on HGI. Correlation analysis indicates that the negative impact of the yellow type of xylite-rich coal and the sum of total xylite-rich coal on the grindability properties partly can be related to content of total organic carbon and high amount of soluble organic matter. Matrix lithotype does not show any significant correlation with bulk geochemical parameters in both basins. The peat-forming vegetation of all samples from both basins were dominated by decay-resistant gymnosperm (coniferous) plants, belonging to one or several of the families Taxodiaceae, Podocarpaceae, Cupressaceae, Araucariaceae, Phyllocladaceae and Pinaceae. Lignite from the Kolubara basin is characterized by a higher contribution of angiosperm vegetation than coal from the Kostolac basin. Peatification of the Kolubara coal occurred under more oxic conditions than the Kostolac one. Analysis of biomarkers indicated that the negative impact of all types of xylite-rich coal from the Kolubara on HGI can be related to the higher proportion of angiosperms, abundance of mid-chain n-alkanes and sesquiterpenoids, aromatization of non-hopanoid triterpenoids and hopanoids, and intense degradation of wood tissues in a more oxic environment. The positive impact of matrix coal on HGI in the Kolubara samples can be attributed to elevated content of non-aromatic hopanoids and low amounts of aromatic non-hopanoid triterpenoids and sesquiterpenoids, which seems to hinder the grindability properties.", publisher = "Elsevier, Amsterdam", journal = "International Journal of Coal Geology", title = "Petrological and organic geochemical properties of lignite from the Kolubara and Kostolac basins, Serbia: Implication on Grindability Index", pages = "362-344", volume = "131", doi = "10.1016/j.coal.2014.07.004" }
Životić, D., Bechtel, A., Sachsenhofer, R., Gratzer, R., Radić, D., Obradović, M.,& Stojanović, K.. (2014). Petrological and organic geochemical properties of lignite from the Kolubara and Kostolac basins, Serbia: Implication on Grindability Index. in International Journal of Coal Geology Elsevier, Amsterdam., 131, 344-362. https://doi.org/10.1016/j.coal.2014.07.004
Životić D, Bechtel A, Sachsenhofer R, Gratzer R, Radić D, Obradović M, Stojanović K. Petrological and organic geochemical properties of lignite from the Kolubara and Kostolac basins, Serbia: Implication on Grindability Index. in International Journal of Coal Geology. 2014;131:344-362. doi:10.1016/j.coal.2014.07.004 .
Životić, Dragana, Bechtel, Achim, Sachsenhofer, Rainhard, Gratzer, Rainhard, Radić, Dejan, Obradović, Marko, Stojanović, Ksenija, "Petrological and organic geochemical properties of lignite from the Kolubara and Kostolac basins, Serbia: Implication on Grindability Index" in International Journal of Coal Geology, 131 (2014):344-362, https://doi.org/10.1016/j.coal.2014.07.004 . .