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All Journal Komunikasi Fisika Indonesia TAMBANG Jurnal Ilmiah MTG Jurnal IPTEK Journal of Geoscience, Engineering, Environment, and Technology Jurnal Penelitian Sains Jurnal Geomine Jurnal Ilmiah Universitas Batanghari Jambi PROMINE Jurnal Mineral, Energi dan Lingkungan Jambura Geoscience Review Jurnal Mineral, Energi dan Lingkungan Journal of Earth and Marine Technology (JEMT) Prosiding Seminar Nasional Teknologi Industri Berkelanjutan Berita Sedimentologi Jurnal Ilmiah Geologi pangea Journal of Geology Sriwijaya

Idarwati Idarwati

Teknik Geologi, Fakultas Teknik, Universitas Sriwijaya, Sumatera Selatan 30862, Indonesia

Author-ID : 3974311

Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation

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Impact of Sulphur Content on Coal Quality at Delta Plain Depositional Environment: Case study in Geramat District, Lahat Regency, South Sumatra Sari, Siska Linda; Rahmawati, Mutia Armilia; Triyoga, Alan; Wati, Idar
Journal of Geoscience, Engineering, Environment, and Technology Vol 2 No 3 (2017): JGEET Vol 02 No 03 : September (2017)
Publisher : UIR PRESS

The research was conducted in Geramat District of Lahat Regency, South Sumatra. An evaluation of the geological condition of the research area shown that the coal deposits were found in Muara Enim Formation as a coal-bearing formation. The method used was literature study, field observation and the laboratory work includes proximate and petrography analysis. The aim of this research is to determine the environmental condition of coal based on the change of total sulphur content and to know the relation between ash content to calorific value.  As the result of proximate analysis conducted on five samples of coal, the research area obtained total sulphur (0,21-1,54% adb), ash content (3,16 - 71,11% adb) and gross calorific value (953 - 5676 cal/g. adb). Based on the result of maceral analysis showed the maceral percentage of coal in research area composed by vitrinite (77,8-87,4 %), liptinite (0,6 %), inertinite (8,0 – 17,6 %) and mineral matter concentration in the form of pyrite (1,6-4,6 %). The average reflectance value of vitrinite (Rv) of coal in the research area (0.54%). the results analysis shows that the coal in Muara Enim Formation on the research area is in the transitional lower delta plain depositional environment phase. Any changes in the sedimentary environment affected by sea water will be followed by changes in total sulphur and the higher ash content, on the contrary, the lower calorific value of the coal.

Impact of Sulphur Content on Coal Quality at Delta Plain Depositional Environment: Case study in Geramat District, Lahat Regency, South Sumatra Siska Linda Sari; Mutia Armilia Rahmawati; Alan Triyoga; Idar Wati
Journal of Geoscience, Engineering, Environment, and Technology Vol. 2 No. 3 (2017): JGEET Vol 02 No 03 : September (2017)
Publisher : UIR PRESS

The research was conducted in Geramat District of Lahat Regency, South Sumatra. An evaluation of the geological condition of the research area shown that the coal deposits were found in Muara Enim Formation as a coal-bearing formation. The method used was literature study, field observation and the laboratory work includes proximate and petrography analysis. The aim of this research is to determine the environmental condition of coal based on the change of total sulphur content and to know the relation between ash content to calorific value. As the result of proximate analysis conducted on five samples of coal, the research area obtained total sulphur (0,21-1,54% adb), ash content (3,16 - 71,11% adb) and gross calorific value (953 - 5676 cal/g. adb). Based on the result of maceral analysis showed the maceral percentage of coal in research area composed by vitrinite (77,8-87,4 %), liptinite (0,6 %), inertinite (8,0 – 17,6 %) and mineral matter concentration in the form of pyrite (1,6-4,6 %). The average reflectance value of vitrinite (Rv) of coal in the research area (0.54%). the results analysis shows that the coal in Muara Enim Formation on the research area is in the transitional lower delta plain depositional environment phase. Any changes in the sedimentary environment affected by sea water will be followed by changes in total sulphur and the higher ash content, on the contrary, the lower calorific value of the coal.

Characteristics of Coal and Cleat Attributes in Ulak Lebar and Surroundings Area, Lahat Regency, South Sumatra Mutia Armilia Rahmawati; Siska Linda Sari; Alan Triyoga; Idar wati
Journal of Geoscience, Engineering, Environment, and Technology Vol. 3 No. 2 (2018): JGEET Vol 03 No 02 : June (2018)
Publisher : UIR PRESS

The research conducted in Ulak Lebar Area, Lahat Regency, South Sumatra. The focus of this study is on the Muara Enim Formation as it is known as the main coal-bearing formation in South Sumatra Basin. The research is aimed to determine the characteristics of coal based on its physical properties, also knowing the cleat development at the coal seam in the research area. The methods used such as literature study, field observation and laboratory test. Field observations included the observations of coal megascopic appearance and cleat attributes analysis such as the measurements of cleat orientation, aperture, spacing and length. The analysis result of cleat at LP 2A and LP 2B shows a relatively similar such as spacing value ranged between 6 - 9 cm and 5.5 – 8.6 cm while the aperture value ranged from 0.05 - 0.2 cm, and 0.05 - 0.25 cm, whereas at LP 67 the spacing value ranged from 1.5 to 3.3 cm and the aperture valued between 0.1 - 0.3 cm. A rather significant difference between the cleat spacing values of LP 67 towards both previous observation stations is indicated by the geological processes occurred during the coalification process thus affected the development of cleats in coal, the geology structure control is characterized by a relatively large aperture and smaller spacing values. The laboratory test conducted is maceral analysis, shows the coal in the research area is dominantly composed of vitrinite (74,8%) and the vitrinite reflectance value is 0,40 indicating the coal classified as sub-bituminous rank.

Co-Authors Aditya N.P.H Afrilita, Afrilita Afrilta Afrilita Alan Triyoga Alan Triyoga Alan Triyoga, Alan Daryono, Sapto Kis Dian Rahma Yoni, S.T., M.T. Dita Maulia Dyah Hastuti, Endang Wiwik Elisabet D. Mayasari Elisabet Dwi Mayasari Febrian, Muhammad Rizky Harnani Harnani Harnani, Harnani Hibatullah, Muhammad Ariq Intan Paramita Haty M. Ridho Naufalwan Maharani, Widyana Maulia, Dita Mayasari, Elisabet Dwi mega puspita Mifturrahma, Rizkiya Mutia Armilia Rahmawati Mutia Armilia Rahmawati Mutia Armilia Rahmawati, Mutia Armilia Oke Aflatun Pranata, Ridho Prasetya, Dyo Pratomo, Septyo Uji Rahmadani, Gea Fanny Rahmanita, Dwie Saputra, Pirdaus Setia Pambudi Siska Linda Sari Siska Linda Sari Siska Linda Sari, Siska Linda Stevanus Nalendra Stevanus Nalendra Jati Syaharani, Puan Rahima Yogie Zulkurnia Rochmana Yusar, Adri Taufiqurrahman

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