CD Tesis

optimasi proses pirolisis biomassa kulit kayu a. cRASSICARPA menggunakan katalis nImO/nza dengan pendekatan rsm central composite design

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The depletion of fossil energy sources and their environmental impacts have encouraged the use of renewable energy based on biomass. Acacia crassicarpa bark is a lignocellulosic waste from the forestry industry with significant potential as a feedstock for bio-oil production through pyrolysis. This study aims to optimize the bio-oil yield from the pyrolysis of A. crassicarpa bark using a NiMo/NZA catalyst through the Response Surface Methodology (RSM) with a Central Composite Design (CCD). The parameters analyzed include pyrolysis temperature (400–500°C), catalyst concentration (2–6%), and reaction time (30–90 minutes). The results showed that temperature and catalyst concentration had a significant effect on the bio-oil characteristics, while time did not show a statistically significant effect. The RSM mathematical model obtained was: YBio-oil = 44.30 + 3.12A + 3.19B + 0.4562C + 0.5313AB – 0.0862AC + 0.2813BC – 3.18A² + 0.019B² – 1.16C², which demonstrated high predictive accuracy with an Adjusted R² of 0.9212 and a Predicted R² of 0.8650. Based on the optimization results, the optimal conditions were achieved at a temperature of 500°C, catalyst concentration of 5.1%, and residence time of 69 minutes, yielding 48.65% bio-oil with a desirability value of 0.861. The physical characterization under optimal conditions showed a viscosity of 19.06 cSt, density of 1.26 g/cm³, and calorific value of 22.89 MJ/kg. GC-MS analysis revealed that the dominant components in the bio-oil were acetone (26.26%) and acetic acid (23.24%), which are volatile compounds resulting from the decomposition of hemicellulose and lignin fractions. This study demonstrates that the NiMo/NZA catalyst is effective in enhancing the yield and quality of bio-oil and presents a promising green technology approach for the sustainable utilization of biomass waste.
Keywords: A. crassicarpa, Bio-oil, GC-MS, Pyrolysis, RSM

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2310246312

Penerbit

Pekanbaru : UNRI – PASCA – Magister Teknik Kimia., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2310246312

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

Magister Teknik Kimia

Info Detail Spesifik

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Pernyataan Tanggungjawab

Rahmat

Versi lain/terkait

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