Title: Investigation of gas adsorption and desorption characteristics for some Turkish lignites in terms of coal petrographic properties

Authors: Mehmet Bilen; Sait Kizgut

Addresses: Department of Mining Engineering, Zonguldak Bülent Ecevit University, 67100, Zonguldak, Turkey ' Department of Mining Engineering, Zonguldak Bülent Ecevit University, 67100, Zonguldak, Turkey

Abstract: Gas adsorption on coals, as well as identifying coal gas content of coal seams, have a vital role in terms of prediction and prevention either gas outbursts or explosions in coal mines. That is why coal samples should be characterised in terms of their adsorption capacities. Coals depending on their structural and compositional characteristics, they have different potentials of adsorption of depending on gas type and pressure. Likewise, coal desorption characteristics changes with coal properties and, in the context of this study, nitrogen, carbon dioxide and methane gases adsorption on various types of coals were investigated by plotting the corresponding isotherms. In addition to the effect of gas type and pressure on gas adsorption and desorption, the effect of coal petrography was investigated. [Received: October 14, 2022; Accepted: April 12, 2023]

Keywords: adsorption-desorption; coal; petrograhic analysis; lignite; Langmuir; vitrinite; inertinite; liptinite.

DOI: 10.1504/IJOGCT.2023.133537

International Journal of Oil, Gas and Coal Technology, 2023 Vol.34 No.1, pp.68 - 95

Received: 13 Oct 2022
Accepted: 12 Apr 2023
Published online: 19 Sep 2023 *

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