Analisis Karakteristik Fisik Piroil Polypropylene Melalui Studi Korelasi Temperatur dan Konsentrasi Katalis γ-Al₂O₃Terhadap Nilai Density dan Color ASTM

Muhammad Vitto Ramadhani; David Bahrin; Selpiana Selpiana

doi:10.55681/armada.v4i5.2054

Authors

Muhammad Vitto Ramadhani Mahasiswa Pascasarjana Teknik Kimia, Fakultas Teknik, Universitas Sriwijaya, Sumatera Selatan, Indonesia
David Bahrin Teknik Kimia, Fakultas Teknik, Universitas Sriwijaya, Sumatera Selatan, Indonesia
Selpiana Selpiana Teknik Kimia, Fakultas Teknik, Universitas Sriwijaya, Sumatera Selatan, Indonesia

DOI:

https://doi.org/10.55681/armada.v4i5.2054

Keywords:

Pirolisis, polypropylene, γ-Al₂O₃, Densitas, ASTM Color

Abstract

Penelitian ini menganalisis pengaruh temperatur dan konsentrasi katalis terhadap karakteristik fisik piroil hasil pirolisis limbah plastik Polypropylene (PP) dari Perusahaan X dalam kondisi vakum menggunakan katalis γ-Al₂O₃ dan ukuran material 1,7 mm. Variabel penelitian meliputi temperatur operasi 350°C dan 400°C dengan variasi konsentrasi katalis 0%, 2,5%, 5%, serta 10%, di mana parameter kualitas fisik diuji menggunakan standar ASTM D4052 untuk densitas dan ASTM D1500 untuk warna. Hasil menunjukkan bahwa densitas terendah sebesar 0,7705 g/cm³ dicapai pada kondisi 400°C dengan katalis 10%, yang mengindikasikan terjadinya perengkahan rantai polimer secara optimal menjadi fraksi hidrokarbon ringan. Namun, dari aspek visual, temperatur 350°C menghasilkan minyak yang lebih jernih dengan nilai Color ASTM terendah sebesar 1,5 pada konsentrasi katalis 10%, sedangkan pada temperatur 400°C terjadi kecenderungan penggelapan warna hingga mencapai skala 2,5. Dapat disimpulkan bahwa terdapat hubungan timbal balik antara densitas dan kejernihan warna, di mana penggunaan katalis 10% pada suhu 400°C paling efektif untuk meminimalkan massa jenis, sementara suhu 350°C dengan katalis 10% memberikan hasil terbaik untuk kualitas visual produk.

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