Petrografi Dan Geokimia Batubara Di Daerah Pahirangan Dan Sekitarnya,  Kabupaten Kotawaringin Timur, Provinsi Kalimantan Tengah

Wibisono, Sigit Arso; Dwitama, Eska Putra; Prahesti, Iudhi O

doi:10.47599/bsdg.v14i1.245

Cited by 5 publications

(5 citation statements)

References 1 publication

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“…The datasets used in this study were sourced from the publication by the Ministry of Energy and Mineral Resources, Indonesia, focusing on the petrography and geochemistry of coal samples from the Barito Basin on Borneo Island [2] (refer to Figure 2). Based on the geochemical analysis conducted by Wibisono et al (2019) [2], it was determined that the majority of the samples belonged to the Lignite-Sub-bituminous class in terms of maturity (see Figure 3). The coal outcrops in the Barito Basin are associated with the Dahor Formation, which was deposited during the middle Miocene to early Pleistocene period [8].…”

Section: Geological Backgroundmentioning

confidence: 99%

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Multivariate Statistical Analysis of Coal in Dahor Formation, Borneo Island, Indonesia: A Comparative Study Utilizing Principal Component Analysis (PCA)

Putri

2023

JEMT

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This study focuses on the multivariate statistical analysis of coal samples from the Dahor Formation in Borneo Island, Indonesia, utilizing Principal Component Analysis (PCA). The objective is to discern the differences in coal samples based on their geological history and chemical properties. The Indonesian coal industry heavily relies on domestic consumption, with plans to increase coal usage for domestic purposes. Coal classification systems play a vital role in evaluating coal quality and determining its economic value. The geological background of the study area in Borneo Island is discussed, emphasizing relevant formations and sedimentation processes. The application of PCA in multivariate statistical analysis is explained, along with the generation of a correlation matrix to explore relationships between variables. The results reveal the presence of four distinct quadrants in the processed coal data, indicating the influence of volatile matter, total moisture, ash content, and fixed carbon. Further analysis demonstrates relatively insignificant differences in the proximate analysis parameters, except for ash content, which indicates the presence of impurity minerals. The concentration of volatile matter, ash, and moisture impacts the fixed carbon content, while volatile matter influences the combustion process. These findings provide valuable insights into coal quality and utilization. The utilization of PCA and multivariate analysis enhances understanding of coal characteristics and facilitates decision-making in coal-related industries. The study concludes with a call for further investigations and analyses to enhance our understanding of coal deposits, improve resource estimation, and develop more sustainable and efficient coal-based processes. Continued research in this field will contribute to advancements in coal science and the development of strategies for responsible coal utilization.

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Section: Geological Backgroundmentioning

confidence: 99%

“…While both formations are coalbearing, this report specifically focuses on the Dahor Formation. Previous investigations conducted by [2] encompassed petrography and geochemical analyses of the Dahor Formation.…”

Section: Introductionmentioning

confidence: 99%

Multivariate Statistical Analysis of Coal in Dahor Formation, Borneo Island, Indonesia: A Comparative Study Utilizing Principal Component Analysis (PCA)

Putri

2023

JEMT

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“…Sumberdaya batubara Indonesia mencapai 151,399 miliar ton dengan total cadangan sebesar 39,89 miliar ton yang sebagian besar terdistribusi di Sumatera dan Kalimantan (Wibisono, Dwitama dan Prahesti, 2019). Distribusi kualitas sumberdaya batubara Indonesia berada di kisaran 53,62% termasuk ke dalam kelompok kalori sedang, 36,02% kalori rendah, 8,70% kalori tinggi dan 1,66% kalori sangat tinggi.…”

Section: Pendahuluanunclassified

Peningkatan kualitas batubara peringkat rendah dengan cara menurunkan kadar air melalui proses evaporasi

Umar

Setiawan

2022

JTMB

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Batubara peringkat rendah umumnya memiliki kadar air yang tinggi dan nilai kalori yang rendah, sehingga batubara jenis ini disebut juga dengan batubara kalori rendah. Penggunaan batubara kalori rendah saat ini masih terbatas, karena karakteristiknya yang kurang menguntungkan jika digunakan sebagai bahan bakar langsung. Penurunan kadar air dengan metoda evaporasi melalui proses pemanasan yang diikuti dengan pelapisan menggunakan residu minyak bumi, merupakan salah satu cara untuk menigkatkan kualitas batubara kalori rendah. Percobaan dilakukan pada skala laboratorium menggunakan oven dan otoklav pada suhu 100, 125 dan 150°C selama 30, 60 dan 90 menit. Pemanasan dengan oven batubara dipanaskan tanpa tekanan, sedangkan pemanasan dengan otoklav batubara dicampur dengan kerosin dan residu pada tekanan maksimal 3 Bar. Hasil menunjukkan bahwa pemanasan menggunakan oven mampu menurunkan kadar air total (air bawaan + air bebas) sebear 95,16% sedangkan dengan menggunakan otoklav sebesar 95,12% pada suhu dan waktu yang sama, yaitu suhu 150°C selama 90 menit. Pemanasan dengan otoklav memberikan hasil yang lebih baik dibandingkan dengan pemanasan menggunakan oven pada kondisi suhu dan waktu yang sama. Pada suhu 125°C selama 60 menit, batubara kalori rendah (<5.100 kkal/kg) yang dipanaskan dalam oven naik menjadi batubara dengan peringkat kalori sedang (5.100-6.100 kkal/kg), sedangkan pemanasan dengan menggunakan otoklav batubara tersebut naik menjadi batubara kalori tinggi (> 6.100 kkal/kg) dalam air direid basis (adb).

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“…Indonesia has 143.7 billion tons of coal resources, with total reserves of 38.84 billion tons (Wibisono et al, 2019). Currently, coal is used most extensively in Indonesia, about 80% is used as fuel for coal-fired power plants (CFPPs), and the rest is distributed to the cement, metallurgical, paper, textile, and other industries.…”

Section: Introductionmentioning

confidence: 99%

Two-Stage Palm Kernel Shell Washing With Water and Acetic Acid as Preparation of Co-Firing System With Coal

Umar,

Zulfahmi,

Suganal

et al. 2024

MGPB

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Palm kernel shells (PKS) were washed with water and glacial acetic acid (CH3COOH) gradually to prepare them for co-firing with coal. They were then torrefied at 450ºC for one hour. Washing was done to reduce the concentration of ash and alkaline oxides, which would reduce the chance of slagging and fouling. The research was conducted considering that information about washing the PKS with acetic acid and then having them torrefied is very limited and unclear. The results showed that washed and torrefied PKS had better characteristics than those of raw PKS or PKS washed with water. PKS that is washed with acid, torrefied and then blended with coal has low slagging and medium fouling tendencies. However, based on ash fusion temperature, the inclination towards slagging and fouling is high under reducing conditions and medium under oxidation conditions.

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Petrografi Dan Geokimia Batubara Di Daerah Pahirangan Dan Sekitarnya, Kabupaten Kotawaringin Timur, Provinsi Kalimantan Tengah

Cited by 5 publications

References 1 publication

Multivariate Statistical Analysis of Coal in Dahor Formation, Borneo Island, Indonesia: A Comparative Study Utilizing Principal Component Analysis (PCA)

Multivariate Statistical Analysis of Coal in Dahor Formation, Borneo Island, Indonesia: A Comparative Study Utilizing Principal Component Analysis (PCA)

Peningkatan kualitas batubara peringkat rendah dengan cara menurunkan kadar air melalui proses evaporasi

Two-Stage Palm Kernel Shell Washing With Water and Acetic Acid as Preparation of Co-Firing System With Coal

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