Pirolisis Limbah Plastik Polypropylene Dengan Katalis HZSM-5 Untuk Pembentukan Fraksi Hidrokarbon

Dianty, Arini (2026) Pirolisis Limbah Plastik Polypropylene Dengan Katalis HZSM-5 Untuk Pembentukan Fraksi Hidrokarbon. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Limbah plastik polypropylene (PP) dari kemasan sekali pakai berpotensi dikonversi menjadi produk bernilai melalui pirolisis katalitik. Penelitian ini menganalisis pengaruh variasi kadar katalis HZSM-5 (0,50; 0,75; dan 1,00 wt%) terhadap yield produk pirolisis (minyak, gas, dan residu padat), sifat fisik minyak (densitas, viskositas, dan titik nyala), komposisi hidrokarbon minyak berdasarkan GC-MS, serta nilai RON sebagai indikator ketahanan knocking. Proses pirolisis dilakukan pada 1 kg limbah PP thinwall dengan konfigurasi ex-situ (katalis ditempatkan terpisah dari lelehan PP) dalam atmosfer inert N2 pada suhu 350-370 °C selama 75 menit. Produk cair yang terkondensasi dianalisis sifat fisiknya, sedangkan produk gas dan padat ditentukan melalui neraca massa. Hasil menunjukkan kadar katalis memengaruhi distribusi produk, dengan yield minyak tertinggi diperoleh pada 0,50% sebesar 77,41%, menurun pada 0,75% menjadi 43,20%, dan meningkat kembali pada 1,00% menjadi 57,42%; produk gas meningkat hingga 40,33% pada 0,75% dan menurun menjadi 33,10% pada 1,00%, sementara produk padat tetap sangat kecil (0,13-0,19%). Peningkatan kadar katalis cenderung meningkatkan densitas (0,7780-0,7866 g/mL), viskositas kinematik (1,4799-1,6670 cSt pada 28 °C), serta titik nyala (35-38 °C). Analisis GC-MS pada sampel minyak campuran menunjukkan dominasi hidrokarbon C10-C12 dengan komponen utama C10 sebesar 59,21%. Meskipun rentang karbon berada pada area tumpang tindih gasoline-kerosin, kecenderungan sifat fisik mengarah pada fraksi setara kerosin/avtur. Uji RON pada sampel campuran menghasilkan RON 110 yang menunjukkan ketahanan knocking sangat baik. Secara keseluruhan, pirolisis katalitik PP dengan katalis HZSM-5 menghasilkan minyak yang berpotensi sebagai bahan bakar, namun pemurnian atau fraksinasi lanjutan diperlukan untuk memenuhi spesifikasi komersial.
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Plastic polypropylene (PP) waste from single-use packaging can be upgraded into value-added products through catalytic pyrolysis. This study investigates the effect of HZSM-5 catalyst loading (0.50, 0.75, and 1.00 wt%) on the yield of pyrolysis product fractions (oil, gas, and char), the physical properties of the resulting oil (density,viscosity, and flash point), the hydrocarbon composition of the oil determined by GC–MS, and the research octane number (RON) as an indicator of anti-knock performance. Pyrolysis was carried out using 1 kg of thinwall PP waste in an ex-situ configuration (catalyst placed separately from the molten PP) under an inert N₂ atmosphere at 350–370 °C for 75 minutes. The condensed liquid product was characterized for its physical properties, while gas and solid products were quantified using a mass balance approach. The results show that catalyst loading affects product distribution. The highest oil yield was obtained at 0.50 wt% (77.41%), decreasing at 0.75 wt% (43.20%) and then increasing at 1.00 wt% (57.42%). Gas yield increased to 40.33% at 0.75 wt% and decreased to 33.10% at 1.00 wt%, whereas char remained negligible (0.13–0.19%). Increasing catalyst loading tended to increase oil density (0.7780–0.7866 g/mL), kinematic viscosity (1.4799–1.6670 cSt at 28 °C), and flash point (35–38 °C). GC–MS analysis of the blended oil sample indicated a dominance of C10–C12 hydrocarbons, with C10 as the major component (59.21%). Although the carbon-number range overlaps the gasoline–kerosene region, the physical property trends suggest a kerosene/jet-fuel-like fraction. RON testing of the blended sample yielded a value of 110, indicating excellent resistance to knocking. Overall, catalytic pyrolysis of PP using HZSM-5 produces an oil with potential fuel applications; however, further purification or fractionation is required to meet commercial fuel specifications.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Pirolisis, Katalitik, Polypropylene, HZSM-5, Hidrokarbon Pyrolysis, Catalytic, Polypropylene, HZSM-5, Hydrocarbon
Subjects:	Q Science > QD Chemistry > QD281 Pyrolysis
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Arini Dianty
Date Deposited:	04 Feb 2026 09:05
Last Modified:	04 Feb 2026 09:05
URI:	http://repository.its.ac.id/id/eprint/132136

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