Produksi Bio-oil dari Co-pyrolysis Pelepah Kelapa Sawit dan Plastik Polyethylene Terephthalate Menggunakan Katalis Fly Ash Batu Bara

Nadya Cahaya Putri (Universitas Riau)
Suci Rahmadini (Universitas Riau)
Nurfatihayati Nurfatihayati (Universitas Riau)
Sunarno Sunarno (Universitas Riau)
Panca Setia Utama (Universitas Riau)
Anisa Mutamima (Universitas Riau RMIT University, Australia)

Jurnal Teknik Kimia USU
Vol. 15 No. 2 (2026): Jurnal Teknik Kimia USU

This study investigates bio-oil production via the co-pyrolysis of oil palm fronds (OPF) and polyethylene terephthalate (PET) plastics using a coal fly ash catalyst. The process was conducted in a fixed-bed reactor at 350°C for 60 minutes. Results showed that an optimum OPF to PET ratio of 75:25 yielded 20.48% bio-oil. The addition of 10% fly ash maximized the yield to 27.04%, whereas a 15% catalyst concentration triggered over-cracking reactions, thereby decreasing the yield. Conversely, the highest heating value of 31.46 MJ/kg (meeting the ASTM D7544-12 standard) was achieved at the 15% catalyst concentration. This highlights a trade-off between the optimum conditions for bio-oil quantity (10% catalyst) and quality (15% catalyst). GC-MS analysis confirmed the dominance of phenolic compounds, furans, and carboxylic acids, affirming the potential of this mixture as a renewable energy alternative.