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All Journal Justek : Jurnal Sains Dan Teknologi Journal of Applied Agricultural Science and Technology
Leila Utarina
Politeknik Negeri Sriwijaya
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Education Mathematics

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Characterization of Palm Shell-Derived Bio-Oil Through Pyrolysis Leila Utarina; Rusdianasari Rusdianasari; Leila Kalsum
Journal of Applied Agricultural Science and Technology Vol. 6 No. 2 (2022): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (400.259 KB) | DOI: 10.55043/jaast.v6i2.69

Abstract

Lignocellulosic biomass is a renewable resource used to produce energy, fuels, and chemicals. This study aimed to determine the effect of pyrolysis temperature on product yield and product characterization of bio-oil. In this study, palm shells were selected and prepared as raw materials for bio-oil production. Palm shells were first soaked in 10% HCl and then pyrolyzed at temperatures of 300 oC, 350 oC, 400 oC, and 450 oC in a fixed bed reactor. Afterward, the reactor will emit smoke which later will condense into bio-oil. The experimental results show that a temperature of 450 oC will be a better choice for higher bio-oil yields (44.59%). The characteristics of the bio-oil obtained are density (905 – 1015.17 kg/m3), Kinematic Viscosity (1.21 – 1.5 mm2/s), and flash point (60 – 68.7 oC).
Life Cycle Assessment (LCA) of Biodiesel Production from Coconut Pulp Using In-Situ Transesterification with Microwave Energy Daya Wulandari; Riztamala Diana; Godlove Elioth Kiswaga; Leila Utarina; Devina Sanchia Samosir; Marisa Tri Octavia
Justek : Jurnal Sains dan Teknologi Vol 9, No 2 (2026): June
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v9i2.38010

Abstract

Coconut pulps are solid waste from coconut processing that has had its coconut milk extracted, with a remaining oil content of around 12.2–15.9%. The processing of coconut pulp is not yet optimal, and this waste has the potential to be utilized as renewable energy in the form of biodiesel. Biodiesel is produced through an in-situ transesterification process assisted by microwave energy. This study aims to identify the potential environmental impacts of biodiesel production from coconut pulp as fuel. A Life Cycle Assessment (LCA) was conducted using the cradle-to-gate approach with the SimaPro ver. 9.4.0.3 data processing application and a database similar to the eco-invent database. The environmental impact assessment was analyzed using the EF 3.0 Method (adapted) V1.03 / EF 3.0 normalization and weighting set. The results show that among the stages of the biodiesel production process, the transportation of raw materials and supporting materials has the greatest impact on climate change compared to other stages. The transportation stage contributed 78.19 kg CO₂-eq out of a total of 204.35 kg CO₂-eq in the climate change category and dominated energy resource use at 1108.14 MJ out of a total of 1742.17 MJ. In addition, the preparation stage also contributed significantly to climate change, with emissions reaching 56.21 kg CO₂-eq. The large contribution from the transportation stage was mainly caused by exhaust gas emissions from vehicles used to transport raw materials and supporting materials. Based on the LCA results, environmental performance improvements or continuous improvements that can be implemented include optimizing logistics, regulating fuel use, selecting the nearest sources of raw materials, and improving energy efficiency during the preparation stage to support more sustainable biodiesel production from coconut pulp.
Co-Authors Daya Wulandari Devina Sanchia Samosir Godlove Elioth Kiswaga Leila Kalsum Marisa Tri Octavia Riztamala Diana Rusdianasari Rusdianasari