Abstract
Volatile displacement, which measures the difference between calculated and experimental volatile matter, is indicative of abnormality in coals which may be related to petrological or chemical parameters. The volatile displacement (δυ) values of Meghalaya coals were calculated from their chemical analyses. Correlations of volatile displacement (δυ) with parameters such as carbon, hydrogen, moisture, oxygen, oxygen plus sulphate sulphur, oxygen plus pyritic sulphur, oxygen plus organic sulphur and total sulphur were studied. An approximately linear relationship exists only between δυ and moisture, and δυ and total sulphur, and not between other parameters. Plots on Seyler’s chart indicate the coals as perhydrous to orthohydrous. The linear relationship with total sulphur indicates that the coals may have become abnormal mainly due to the marine environment of deposition and weathering.
Similar content being viewed by others
References
Behera P 1991 Geology of the Ib-valley coalfield with special reference to spontaneous combustibility of different coalseams; Unpubl. Ph.D Thesis, Indian School of Mines, Dhanbad, India.
Chandra D, Mazumdar K and Basumallick S 1983 Distribution of sulphur in the tertiary coals of Meghalaya; Int. J. Coal Geol. 3 63–75.
Chandra D and Gupta U P 1976 Volatile displacement of weathered coals; Fuel 55 84–85.
Chandra D and Srivastava G P 1980 Volatile displacement of Burnt coals, J. Geol. Soc. India 21 306–310.
Chandra D, Rajaratnam S and Handique G K 1997 Coalification trend of Oligocene coals of Northeast India; Int. J. Coal Geol. 69(3) 251–256.
Ghosh D 1976 Palaeocene reef rock complex of Meghalaya and its oil potentialities; Sci. and Cult. 43.
Niyogi C 1989 Geology of Talcher coalfield with special reference to spontaneous combustion; Unpubl Ph.D Thesis, Indian School of Mines, Dhanbad, India.
Seyler C A 1938 Petrology and the classification of coal: Pts I & II; Proc. S Wales Inst. Engrs. 53(4) 254–327.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Behera, P. Volatile displacement of Meghalaya coals — A pointer to explore low sulphur coals. J Earth Syst Sci 116, 137–142 (2007). https://doi.org/10.1007/s12040-007-0013-7
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12040-007-0013-7