Potensi Coal Bed Methane (CBM) Batubara HL-01, Formasi Tanjung, Cekungan Barito, Kabupaten Kapuas

Muhtadun, Amirul (2023) Potensi Coal Bed Methane (CBM) Batubara HL-01, Formasi Tanjung, Cekungan Barito, Kabupaten Kapuas. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Analisis biomarka fraksi hidrokarbon alifatik dilakukan untuk mengetahui potensi Coal Bed Methane (CBM) sampel Batubara HL-01, Formasi Tanjung, Cekungan Barito, Kabupaten Kapuas melalui kajian karakteristik geokimia organik. Analisis dilakukan dengan metode ekstraksi soklet, fraksinasi dengan kromatografi lapis tipis (KLT), lalu dilanjutkan dengan analisis menggunakan instrumen kromatografi gas-spektrometer massa (KG-SM). Identifikasi spektrum massa senyawa temuan dilakukan dengan pembandingan pola waktu retensi dan data spektrum massa penelitian sebelumnya. Hasil identifikasi fragmentogram m/z 57 menunjukkan pola distribusi unimodal dengan kelimpahan tertinggi berada pada puncak n-C27 yang berasal dari tanaman tingkat tinggi terestrial. Nilai rasio TAR, ACL, dan AlkTerr serta teridentifikasinya senyawa trans-kadinana, 8ꞵ(H)-homodrimana, dan senyawa hopanoid menunjukkan masukan bahan organik didominasi oleh tanaman tingkat tinggi terestrial dengan sebagian bahan organik berasal dari tanaman makrofita dan bakteri. Tingkat kematangan termal Batubara HL-01 berada pada tingkat kematangan rendah-awal kematangan tinggi (transisi kematangan rendah ke tinggi) dibuktikan dengan nilai rasio CPI dan OEP serta C31αβ22S/(22S+22R) dan C32αβ22S/(22S+22R) telah memasuki rentang nilai kesetimbangan (equilibrium). Nilai Pr/Ph dan plot diagram Hunt dari rasio Pr/C17 dan Ph/C18 menunjukkan Batubara HL-01 terendapkan pada lingkungan oksik serta merupakan kerogen tipe III (gas prone) sehingga Formasi Tanjung berpotensi sebagai sumber Coal Bed Methane (CBM).
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Biomarker analysis of hydrocarbon aliphatic fraction was conducted to study Coal Bed Methane (CBM) potential of HL-01 coal sample from Tanjung Formation, Barito Basin, Kapuas Regency through organic geochemistry characteristics research. Sample was extracted using Soxhlet extraction method, fractionated using thin-layer chromatography (TLC), then analyzed through gas chromatography-mass spectrometer (GC-MS). Mass spectrum identification was carried out by comparing it to retention time pattern and mass spectrum data from past studies. Identification of fragmentogram m/z 57 showed that it has the distribution pattern of unimodal with the highest abundance at n-C27 which derived from terrestrial higher plants. Value of TAR, ACL, and AlkTerr ratio as well as identified sesquiterpenoid compound such as trans-cadinene, 8ꞵ(H)-homodrimane and hopanoids compound indicates that input of organic matter is dominated by terrestrial higher plants with some organic matters are derived from macrophytes and bacteria. CPI and OEP ratio as well as C31αβ22S/(22S+22R) and C32αβ22S/(22S+22R) ratio showed that HL-01 coal sample have reached equilibrium hence thermal maturity of the sample is at the stage of immature-early mature (transition from immature to mature). Ratio of Pr/Ph and Hunt’s diagram cross plot of Pr/C17 and Ph/C18 showed that the coal sample is deposited in an oxic environment and is a type III kerogen which tend to produce gas. Therefore, Tanjung Formation is potential to produce Coal Bed Methane (CBM).

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Biomarka Hidrokarbon Alifatik, Formasi Tanjung, Cekungan Barito, Coal Bed Methane (CBM); Aliphatic Hydrocarbon Biomarker, Tanjung Formation, Barito Basin, Coal Bed Methane (CBM).
Subjects:	Q Science > QD Chemistry > QD251.2 Chemistry, Organic. Biochemistry
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Amirul Muhtadun
Date Deposited:	04 Oct 2023 01:10
Last Modified:	04 Oct 2023 01:10
URI:	http://repository.its.ac.id/id/eprint/103672

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