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Simamora, Tigor
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Aerospace Engineering Control & Systems Engineering Engineering Mechanical Engineering

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Effect of corn cob particle size on oil yield and production rate in pyrolysis-based waste-to-energy conversion Simamora, Tigor; Gamayel, Adhes; Zaenudin, Mohamad
JTTM : Jurnal Terapan Teknik Mesin Vol 6 No 2 (2025): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v6i2.1678

Abstract

The global energy crisis caused by the limits of oil reserves urging the needs for alternative energy solution, including a pyrolysis-based oil energy. In this study, we investigate the pyrolysis of corn cob biomass with varying particle sizes (3 mesh, 5 mesh, 7 mesh, and 10 mesh) to evaluate its effect on product yields and physical properties. Each experiment was conducted for 90 minutes using 300 grams of feedstock, pre-dried in a microwave oven at 120°C for 2 hours. The results revealed that the bio-oil yield decreased with smaller particle sizes, from 31.52% at 3 mesh to 26.12% at 10 mesh. Conversely, bio-char yield increased from 37.48% to 46.47%, while bio-gas yield decreased from 31.00% to 27.42%. This suggests that excessively small particle sizes reduce bio-oil yield due to uncontrolled reactions despite their higher surface area. The bio-oil density ranged between 1.0235 and 1.0353 g/ml, indicating consistent physical properties across particle sizes. The inlet and outlet temperatures of the reactor (T1 and T2) and condenser (T3 and T4) remained relatively increasingly stable, indicating consistent condensation of pyrolysis gases into liquid bio-oil. This study has successfully provided an insight into the optimization of particle size of the waste processing of corn cob into energy by using the pyrolysis method.
Co-Authors Adhes Gamayel Mohamad Zaenudin