Publication: Influence of pyrolysis temperature on crude palm pyrolysis oil from fresh palm fruit bunches in a double-inclined screw reactor
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Issued Date
2025-11-01
Resource Type
ISSN
01652370
Scopus ID
2-s2.0-105009416678
Journal Title
Journal of Analytical and Applied Pyrolysis
Volume
192
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Analytical and Applied Pyrolysis Vol.192 (2025)
Suggested Citation
Unsomsri N., Wiriyasart S., Tawkaew S., Kaewluan S. Influence of pyrolysis temperature on crude palm pyrolysis oil from fresh palm fruit bunches in a double-inclined screw reactor. Journal of Analytical and Applied Pyrolysis Vol.192 (2025). doi:10.1016/j.jaap.2025.107250 Retrieved from: https://hdl.handle.net/20.500.14740/21162
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Abstract
Thailand, one of the world's largest crude palm oil producers, faces increasing energy demands and dependence on fossil fuel imports. This study presents a novel application of a double-inclined screw reactor for the slow pyrolysis of fresh palm fruit bunches (FFB). The effects of temperature variation (400°C, 500°C, and 600°C) on product yields and pyrolysis oil properties were systematically analyzed. The results showed that higher temperatures increased pyrolysis gas production (27.3 % at 400°C to 31.95 % at 600°C) while reducing pyrolysis oil yield (25.2 % to 16.4 %) due to enhanced thermal cracking. Biochar yield slightly declined, whereas wood vinegar increased from 37.8 % to 42.5 %, indicating greater decomposition of cellulose and hemicellulose. The physicochemical analysis of pyrolysis oil revealed a lower heating value ranging from 38.2 to 39.2 MJ/kg. While 400°C provided the highest oil yield, it contained a higher proportion of oxygenated compounds, reducing stability. 500°C was identified as the optimal pyrolysis temperature, offering a balance between oil yield (21.9 %) and quality, with lower oxygen content, improved stability, and better combustion properties. These findings highlight the potential of FFB-derived crude pyrolysis oil as a promising alternative fuel. Furthermore, the use of a double-inclined screw reactor proved effective for producing high-quality bio-oil from palm-based biomass, offering a novel approach to sustainable energy production for continuous industrial applications.