Agus Haris Widayat, Komang Anggayana, Nurulhuda Halim, Abrar Muslim, Aisyah Al Hamda, Mirza Dian Rifaldi, Mulyono Dwiantoro, Sundek Hariyadi
Four coal samples from the Upper Kutai, South Sumatra, and Meulaboh basins were analyzed using chemical, petrographic, and thermogravimetric–mass spectrometry (TG-MS) methods to characterize their composition and thermal behavior during pyrolysis and gasification. Chemical and petrographic analyses revealed that the samples vary in rank, ranging from sub-bituminous C to high-volatile A bituminous coal (vitrinite reflectance, Rr, between 0.34% and 0.86%). Vitrinite is the predominant maceral, comprising 71.90% to 86.30% by volume. Thermal decomposition during both pyrolysis and gasification was found to be more strongly influenced by coal rank than by maceral composition. During pyrolysis, higher-rank coals exhibited lower thermal decomposition rates. CO₂ was the first gas released during thermal cracking, followed sequentially by CH4, H₂O, and H₂. The latter becoming the dominant gas in the later stages of pyrolysis. In CO₂-driven gasification, the sub-bituminous C coal exhibited a maximum char reactivity of 0.61 mg/min, compared to just 0.01 mg/min for the high-volatile A bituminous coal. Carbon monoxide (CO) was the primary syngas produced during the gasification process. © 2025 Taylor & Francis Group, LLC.
Research Group of Earth Resources Exploration, Mining and Petroleum Engineering Faculty, Institut Teknologi Bandung, Bandung, Indonesia; Research Group of Metallurgical Engineering, Mining and Petroleum Engineering Faculty, Institut Teknologi Bandung, Bandung, Indonesia; Department of Chemical Engineering, Engineering Faculty, Universitas Syiah Kuala, Darussalam, Indonesia; Graduate Program of Mining Engineering, Mining and Petroleum Engineering Faculty, Institut Teknologi Bandung, Bandung, Indonesia; Engineering Faculty, Universitas Kutai Kartanegara, Kalimantan Timur, Tenggarong, Indonesia
Research at a Glance
Register to unlock
Topics & SDG Alignment
Register to unlock
Collaboration
Register to unlock
Author Profile (Selected)
Register to unlock
References Overview
Register to unlock
Journal & Source
Register to unlock
Metadata & Integrity
Register to unlock