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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Physics Education Research Journal
Enda Rasilta Tarigan
Politeknik Teknologi Kimia Industri Medan
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Physics

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Penentuan Massa Jenis Oli secara Sederhana dengan Hukum Archimedes Samuel Gideon; Enda Rasilta Tarigan
Physics Education Research Journal Vol 2, No 1 (2020)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/perj.2020.2.1.5058

Abstract

The most commonly used method for measuring the density of liquids is based on Archimedes' law. Lubricating oil generally has a defined density standard to show the quality of the oil. The purpose of this study is to determine oil density simply by applying Archimedes' law. This research was conducted in three steps. First, the measurement of the empty pycnometer. Second, the measurement of the pycnometer mass containing distilled water and oil. Third, measurement of copper mass in the medium of air, distilled water and oil. From the results of measurements and calculations, the obtained density of distilled water is (0.995 ± 3,582 x 10-4) gr/cm3 whose value is very close to the value of 1 gr/cm3 so that the distilled water used in this study is suitable as a reference/standard in finding volume copper; oil density is (0.868 ± 2.14 x 10-3) gr/cm3 whose value is very close to the value of oil density measured and calculated with a pycnometer of (0.875 ± 4.637 x 10-4) gr/cm3.
Thermal Characterization and Heat Conductivity of Palm Kernel Shell-Based Briquettes Enda Rasilta Tarigan; Abdul Azis Rahmansyah; Muhammad Khatami
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 23, No 2 (2026): July 2026
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Palm kernel shell (PKS), a major by-product of the palm oil industry, has emerged as a promising sustainable feedstock for solid biofuel briquette production. This study presents a systematic review of PKS briquettes, emphasizing their thermal properties, briquetting technologies, pretreatment methods, environmental and economic impacts, and future prospects of PKS briquettes. A PRISMA-based methodology was applied to ensure the transparent identification, screening, and synthesis of relevant peer-reviewed studies on PKS briquette production and performance. The review indicates that PKS briquettes generally possess a high calorific value, substantial fixed carbon content, and competitive combustion performance compared with other biomass fuels. Advances in densification techniques and pretreatment processes have improved the fuel quality, durability, and energy efficiency. Despite these strengths, several research gaps remain. Standardized data on thermal conductivity and heat transfer are limited, and comparative assessments with conventional fuels, such as coal and firewood, are insufficient. Moreover, inconsistencies in the experimental conditions hinder cross-study evaluation, and emission characteristics and large-scale industrial feasibility are underreported. By consolidating current findings and identifying critical knowledge gaps, this review offers a structured foundation for future research and informed policymaking, supporting the integration of PKS briquettes into sustainable energy and circular economy strategies in palm oil–producing regions
Co-Authors Abdul Azis Rahmansyah Muhammad Khatami Samuel Gideon