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Sugeng
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Journal : Journal of Geoscience, Engineering, Environment, and Technology

 1 
The Role of Inertinite Characteristics and Coal Porosity of Seam A-1 of Muara Enim Formation in West Merapi, Lahat, South Sumatera, Indonesia Basuki Rahmad; Budi Prayitno; Susilawati S.S.R; Sugeng; Ediyanto
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 2 (2022): JGEET Vol 07 No 02 : June (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.2.8986

Abstract

Coal contains a complex network of nano-, meso-, and a macro-pore can store fluids and allow fluids to flow through it. Nanoporosity in coal is primarily a result of molecules that have aromatic molecular structures and have been preserved in coal. Most adsorbate compounds, including gases, are stored here. The study area is located in South Sumatera, West Merapi Area, Lahat Regency. Geologically, the area in South Sumatra Basin belongs to the Middle-Late Miocene Muara Enim Formation. Using the ply-by-ply method, coal samples were taken directly from Seam-A in the coal mine walls outcrop, based on macroscopically determinable lithotype information. During laboratory analyses, coal is microscopically analyzed to determine the amount of porosity, permeability, and vitrinite reflectance. The purpose of this study is to investigate the change in composition and characteristics of inertinite macerals when the porosity value is varied.. Vitrinite content is between 91.00-92.80 %; liptinite 0.90-3.40%; inertinite 3.70-4.80%; mineral matter 0.7%-1.8%. Withh a vitrinite reflectance average of 0.34-0.36%, the variation in composition is an indication of changes in plant communities or coal facies. It is generally classified as sub-bituminous coal (ASTM). Porosity value of seam A upper is 1.9% and seam A lower 1.51%, permeability value seam A upper is 70.1 mD and seam A lower 27.1%. Composition of mineral matter in seam A upper is 0.8% and seam A lower 1.7%. The increasing number of inertinite pore is followed by lower porosity value. The inertinite maceral is predominantly aromatic with a high level of cross-linking, and exhibits a high level of aromatization and condensation. They have the highest carbon and the lowest oxygen hydrogen content. A coal maceral's porosity is composed of void spaces, such as open cell lumens preserved in semifusinite and sclerotinite. The porosity of cleats is the percentage of volume in relation to volume of coal, and the porosity of permeability. In coal, semifusinite has extensive interconnected pores that can form significant conduits for fluid flow.
Co-Authors Abby Gina Boang Manalu Adhalia Septia Saputri Adi Nur Rohman Aidy, Widya Romasindah Aidy, Widya Romsindah Akbar, M. Hafid Alfandani Aldini, Vega Alexia Xandra Amin Tohari Anas Rahmad Hidayat Andini Safitri Anggraini, Dian Ayu Tria Anis Malik Toha Atmoko, Dwi Aura Azzara Ram Ardyanti Avini, Tertia Azainil Azainil Azzara Ram Ardyanti, Aura Badrus Zaman Baihaki, Ahmad Bambang Suhada Basuki Rahmad Bima Sumbika Karwita Rahmana Budi Prayitno Bupu, Maria Goreti Dafosta, Maria Theresiana Dewi, Citra Cerya Mulya Diah Nurdiawaty Diah Nurdiwaty Dian Herawati Dian Novita Sari, Dian Novita Dwi Atmoko Dzulkarnain, Ariefin Ediyanto Eko Prasetyo Erwin Owan Hermansyah Esther Masri Fachry Abda El Rahman Faisol Fauzan Ramadhan Fitri Hidayati Fitriana, Diana Fitriani Hanif Maulaniam Sholah Harinto Nur Seha Hasibuan, Mhd Amin HERU SISWANTO Hukmiyah, Mas'adatul Hunny, Aura Tria Indah Kurnia Indra L. Nainggolan Indra Lorenly Nainggolan Insani, Salsabila Robbani Jati Imantoro Jr., Andre Cardenas Julianda, Rindy Juniati, Puput Aulia KATNI KATNI Khaerani, Fatih Khafabi, Ian Rafi Kharisma Sakin Kintan R. Virdauzy Laksana, Prangga Budi Lindri Purbowati M. Hutagalung, Jantarda Marissa Kemala Dirgantini Marko Ferdian Salim, Marko Ferdian Meilya Nur Prianjani Mevi Auriel Sefianing Putri Mila Wijayanti Muh. Ihsan Muhammad Yamin Muhtadin, Achmad Nainggolan, Indra L Nani Septiana Naupal Ni Putu Indah Permata Sari Nova Aulia Rahma Nasution Noviriska Nuri, Ahmad Nuriyah, Sitta Nurul Iman Nuryanto Praminiarto, Hendri Pramudita, Tito Puji Astuti Puput Rustianne Febri Hadi Puspita, Erna Putra, Lintang Andika Putra, Wahyu Ananda Putri, LG. Saraswati Rahma, Zulfiana Ayu Rara Amalia Cendhayanie Ratni Sirait Rio Septian Riswandhita, Yanuar Riyanto Rohman, Adi Nur Romasindah Aidy, Widya Rosadi, Khumaini Rosid, Andiana Rosita Ruslan Abdul Gani Russell Ong Sanubari, Febrian Septian Dwi Arinda Shagti, Ruhita Silalahi, Ronaldo Saputra Sjamsir, Hasbi Solikah, Mar’atus Sri Retnaning Rahayu Sri Wahyuni Sukeriyadi, Mutmainnah Susilawati S.S.R Suwarto Suwarto Syahrani, Abd. Wahab Syahruddin, Erwin Tundo, Tundo Tyas Ayuningrum ur Seha, Harinto N Vianda, Tisa Reta Widiawati, Hestin Sri Windi Ikhsa Velani Yohana Ika Daniati Yuliana, Chelda Yulida, Rina Zainab, Nina Zaman , Badrus Zurqoni