Polycyclic Aromatic Hydrocarbons in Permian Coals of India: Source and Significance

Naik, A. S.

doi:10.1007/s12594-019-1363-x

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…The distribution and changes in abundance of combustion-derived polycyclic aromatic hydrocarbons in sediments are widely used to trace wildfire events in geological history (Naik, 2019; Schootbrugge et al, 2009; Sun et al, 2017; Xiao et al, 2020). Combustion-derived PAHs may be alkylated during subsequent diagenesis, so that the sensitive PAHs may disappear during diagenesis.…”

Section: Discussionmentioning

confidence: 99%

Maceral and Organic Geochemical Characteristics of the No. 6 Coal Seam from the Haerwusu Surface Mine, Inner Mongolia, China

Wang

Jin

Wang

2023

Energy Exploration & Exploitation

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Haerwusu Surface Mine of the Jungar Coalfield is a large coal mine. Its coal formation environments have not been reported in detail. In order to reconstruct the paleoenvironment of the peat formation, nine samples were collected, and were analyzed using microscope, column chromatography, gas chromatography (GC), and gas chromatography–mass spectrometry (GC–MS). According to the results of the microscopic analysis, the average random vitrinite reflectance ( Rr) is 0.73%, indicating a low rank bituminous coal. Vitrinite group is the predominant macerals with an average content of 54.54%, followed by inertinite group with an average of 35.99%. The higher inertinite contents indicate widespread wildfire events during the peat formation. The distribution pattern of n-alkanes, the cross plot between Pr/ n-C17 and Ph/ n-C18, the lower saturated/aromatic hydrocarbon ratios (0.22–0.68) and the presence of cadalene, retene, simonellite indicates that the organic matter is predominantly terrestrial higher plants with a small amount of aquatic organisms. The ternary diagram of Pr/Ph, Pr/ n-C17 and Ph/ n-C18 and the relative abundance of fluorene, dibenzofuran and dibenzothiophene indicate a continental–oceanic alternative facies. The higher contents of combustion-derived PAHs are also indicative of widespread wildfire events during peat formation.

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Section: Discussionmentioning

confidence: 99%

Maceral and Organic Geochemical Characteristics of the No. 6 Coal Seam from the Haerwusu Surface Mine, Inner Mongolia, China

Wang

Jin

Wang

2023

Energy Exploration & Exploitation

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“…The study was performed in 7 open cast mines of MCL where 18 nos. of surface miners owned by MCL comprising of 3 different models (KSM 303 and KSM 19,20 . The coal seams of Talcher coalfields are dominated by vitrinite followed by inertinite and liptinite 21 .…”

Section: Methodsmentioning

confidence: 99%

Impact of In-Seam Dirt Bands on the Performance of Surface Miners in Coal Mines

Singh,

Dhekne,

Pradhan

2024

jmmf

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Surface miner was introduced for coal extraction at Lakhanpur open cast project of Mahanadi Coalfields Limited in 1999 for the first time and owing to its success and benefits it offered like elimination of drilling and blasting, smooth and stable high wall, selective mining for quality control and uniform output fragment size (-100mm) etc. it was adopted in many open cast coal mines and now has become a disruptive mass production technology for coal mining in India. In terms of coal resources in the country, Odisha stands first with 88.104 BT resources but the coal seams in Odisha are characterized by its high ash content and interlaced dirt bands (10 cm to 1.5 m) often termed as rejects. For maintaining coal quality, these dirt bands predominantly of sandstone and shale are also cut by surface miners and are segregated at the time of loading and transported to reject dumps or overburden dumps. These dirt bands have a significant impact on the performance of surface miners and must be taken into account during their selection. The authors, based on the intensive field study undertaken at different opencast coal mines in Odisha highlighted the impact of in-seam dirt bands in coal seams on the performance indicators of surface miners which are normalized production rate, diesel and pick consumption for cutting 1000te of material in this paper. Pick consumption was found to vary linearly with the quantum of abrasive material cut. Empirical relations for estimating monthly normalized production, diesel consumption, and pick consumption of surface miners operating in coal seams with intermittent dirt bands with a coefficient of determination (R2) of 0.74, 0.84, and 0.73 respectively were also developed. The developed relations were validated with the field data and the % error was found to be within +20%. This study helps the coal mining companies in the selection of suitable surface miners for achieving targeted production and also for planning inventory of picks and diesel during its operation.

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Combined electrical resistivity tomography and high-resolution shallow seismic analysis for coal exploration in Talcher Coalfield, India

Yadav,

Kumar,

Tripathi

et al. 2024

Acta Geophys.

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Polycyclic Aromatic Hydrocarbons in Permian Coals of India: Source and Significance

Cited by 4 publications

References 23 publications

Maceral and Organic Geochemical Characteristics of the No. 6 Coal Seam from the Haerwusu Surface Mine, Inner Mongolia, China

Maceral and Organic Geochemical Characteristics of the No. 6 Coal Seam from the Haerwusu Surface Mine, Inner Mongolia, China

Impact of In-Seam Dirt Bands on the Performance of Surface Miners in Coal Mines

Combined electrical resistivity tomography and high-resolution shallow seismic analysis for coal exploration in Talcher Coalfield, India

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