1887

Abstract

Summary

This research was conducted in Muara Air Lawai, Lahat that belongs to the South Sumatera basin, which is one of major coal basins in Indonesia. To compare some samples were also collected from Air Dingin, Sawahlunto, a region in Ombilin basin which famous for its high rank coal. Coal samples were obtained from the core drilling in both areas of research. This research is aimed to determine the methane content in the coals in relation to basic coal characteristics inferred by proximate and petrographical analyses. Analysis of gas content in coal is peformed by measuring lost gas (Q1), desorbed or measured gas (Q2), and the residual gas (Q3), while the gas composition was measured by a gas chromatographer. Coal samples from Muara Air Lawai and Air Dingin are classified as lignite and bituminous coals, respectively. In general, variation of methane contents in both coals are related with moisture content, vitrinite mineral composition, and coal ranks. Methane content in Muara Air Lawai coal is around 0.001 – 0.664 m3/ton and interpreted to be biogenic, whereas that of Air Dingin coal (5.58 – 12.95 m3/ton) is suggested to be a mixture both biogenic and thermogenic methane.

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/content/papers/10.3997/2214-4609.201414101
2015-10-04
2020-04-09
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References

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