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All Journal Transformasi: Jurnal Pengabdian Masyarakat Indonesian Mining Journal Jurnal GEOSAPTA Jurnal Bio-Geo Material Dan Energi Jurnal Karya Abdi Masyarakat Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Jurnal Pertambangan dan Lingkungan Jurnal Tiyasadarma: Jurnal Pengabdian Kepada Masyarakat JURNAL TEKNOLOGI MINERAL FT UNMUL Indonesian Mining Journal
Wiratama, Jarot
Program Studi Teknik Pertambangan, Fakultas Sains Dan Teknologi, Universitas Jambi
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Mechanical Engineering Public Health

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PENGARUH PROSES HIDROTERMAL TERHADAP PENINGKATAN NILAI KALOR DAN PENURUNAN KADAR AIR PADA BATUBARA PERINGKAT RENDAH Marlinda, Lenny; Pane, Xena Maharani; Wiratama, Jarot; Zahar, Wahyudi; Khadafi, Muhammad Reza; Rahmi
Indonesian Mining Journal Vol 28 No 1 (2025): Indoneisan Mining Journal, April 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol28.No1.2025.1539

Abstract

As a low-rank coal, brown coal is characterized to have high water content. It is required a method to improve coal quality that can be used for effective coal utilization. One of the methods is to apply thermal dewatering technology which focuses on improving the quality of low-rank coal using water medium and autoclave. The purpose of this study was to determine the effect of coal to water ratio (w/v) and the effect of particle size of a low rank-coal on water content and calorific value using the hydrothermal method. Coal was processed under hydrothermal conditions at 150 °C for 60 min. For a mixture of 100 g of 25 mesh coal and 50 mL of water, the calorific value and water content after the hydrothermal process reached 5,849 kcal/kg and 5.10% (adb), respectively. While for a mixture of 100 g of 40 mesh coal and 50 mL of water, the calorific value and water content after the hydrothermal process reached 5,789 kcal/kg and 4.94% (adb), respectively. The calorific value obtained increased from the initial value of 3,296 kcal/kg and the water content decreased from the initial value of 44.34% for the coal condition before hydrothermal process. It can be concluded that the hydrothermal process with heating without oxygen carried out by a hydrothermal reactor could increase the calorific value of low-rank coal and reduce water content.
Identification of Coal Distribution Pattern Using Well Logging Method Based on Gamma Ray Log Data and Log Density in Area X PT PMC Site Sungai Lilin: Identification of coal distribution pattern Kesumah, Puja Prana; Amin , Sarwo Sucitra; Wiratama, Jarot; Adhitya, Bagus
Jurnal Bio-Geo Material Dan Energi Vol. 3 No. 2 (2023): Journal of Bio-Geo Material and Energy (BiGME), September 2023
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/bigme.v3i2.30785

Abstract

Physiographically, the research area is included in the South Sumatra Basin, precisely in the Muara Enim Formation, a coal-bearing formation. In this study, secondary data is used in the form of LAS file data from recording well logging data as many as 7 wells which are then processed using WellCAD 5.5 software to obtain log sheet results, namely gamma ray logs and density logs which are then interpreted for subsurface lithology by reading the log curve deflection, from the results of reading the log curve, the lithology in the research area is obtained in the form of claystone, siltstone, carbonaceous claystone, and coal. Coal is characterized by low gamma ray log response (<10 CPS) and high density log response (>900 CPS). To determine the distribution of coal seams in the study area, structural correlation and stratigraphic correlation of coal seams on strike (northwest - southeast) and cross strike (southwest - northeast) were found to be 1 coal seam, namely seam A. Seam A experienced splitting into seam A1 and seam A2 due to structural influence. From the correlation results, it is found that the coal slope is towards the southwest - northeast by experiencing thickening and thinning layers.
Co-Authors Adhitya, Bagus Aditya Denny Prabawa Amin , Sarwo Sucitra Andy Yanottama Assidiqi, Afwan Bagus Adhitya Denny Prabawa, Aditya Dhinda Ayu Faizar Farid Faizar Farid Hari Wiki Utama Juventa, Juventa Kesumah, Puja Prana Khadafi, Muhammad Reza Lenny Marlinda Leta Lestari Lutfi Wahyudi Mega Aulia Megakusuma, Yosha Muhammad Agri Fnalta Muhammad Faisal Seprizal Muhammad Ikrar Lagowa Muhammad Tri Widodo Nabila, Loewina Putri Nasution, Baihaqi Pane, Xena Maharani Rahmi Rakhmatul Arafat Resta, Ichy Lucya Rosalinda Rosalinda Wahyudi Zahar Wahyudi, Lutfi Yosa Megasukma Yosha Megakusuma Yudi Arista Yulanda Yulia Morsa Said Zahar, Wahyudi Zella Navtalia