Abstract
Coal is liberally accessible energy resource utilized by mankind for its comfort. Though economical it still has unfavorable impact on the environment. Presently underground coal a source of methane gas confined within the seams known as coal bed methane (CBM) attracts due to its purity and environment friendly. FTIR, UV visible spectroscopy, XRD, solid state NMR are well known spectroscopic instruments used to analyze complex coals chemical structures and its consequences on methane gas source. In the present research virgin coal samples from Barail Formation are examined by FTIR and XRD to assign various functional groups and minerals present separately. Proximate and ultimate analyses are correspondingly conducted to know its organic and inorganic constituents. Results reflect the low moisture content and moderate fixed carbon quantity progresses with depth. FTIR studies uncover presence of aromatic and aliphatic functional sets; prerequisite of hydrocarbons generation. Coal seam at depths of 740–846 m is favorable for economic methane gas production. These are promising pre-requisites of coal to be an unconventional resource. There is abundance of quartz, kaolinite and montmorillonite; traces of pyrite and siderite too are observed from XRD spectral investigation.
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Acknowledgments
The authors acknowledged the assistance provided by the OIL and Dart Energy for providing samples of the study area. The authors would like to acknowledge the Department of Pharmaceutical Science and the Central Instrumentation Facility, Dibrugarh University, India for facilitating the instruments to carry out experiments. The authors are thankful to Prof S.K. Ghosh and Miss Nayana Adhikari for the guidane and assistance provided during FTIR experiments. Financial assistance was provided by All India Council for Technical Education (AICTE) [File No. 8-128/RIFD/RPS-NER/Policy No. 1/2018-19].
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Banik, P., Phukan, R., Sarmah, R.K. et al. Investigation on Barail Formation Coals of Upper Assam with Reference of Coal Bed Methane (CBM). J Geol Soc India 99, 99–104 (2023). https://doi.org/10.1007/s12594-023-2271-7
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DOI: https://doi.org/10.1007/s12594-023-2271-7