"Penelitian ini bertujuan memanfaatkan kalsium oksida (CaO) dari pasir kuarsa Lombok sebagai katalis pada sintesis aviation fuel melalui proses pirolisis limbah ban. Tiga variasi utama dilakukan, yaitu variasi persen berat katalis (1 wt%, 3 wt%, dan 5 wt%), proses treatment terhadap pasir Pantai Pink, serta perbandingan sumber pasir (Pantai Pink, Tanjung Aan, Kuta Mandalika, dan CaO analitik). Penelitian ini menguji beberapa parameter, termasuk uji GC-MS, uji FTIR, uji XRD, uji BET, uji XRF, uji SEM-EDX, densitas, dan viskositas. Hasil menunjukkan bahwa katalis CaO dari pasir pantai Lombok berhasil berpengaruh terhadap perubahan sifat fisik dan kimia aviation fuel yang dibuktikan dengan uji BET dimana luas permukaan spesifik tinggi (368,927 m²/g), uji SEM-EDX dimana permukaan partikel yang tidak beraturan dan berpori yang menujukkan luas permukaan katalis besar dan dapat mengidentifikasi Ca (42,1% weight) dan O (57,4% weight) sebagai unsur dominan, uji XRF yang mendapatkan kandungan (CaO) dengan konsentrasi sangat tinggi yaitu 89,919%. dan XRD yang menunjukkan puncak khas CaO pada 2θ = 37,37°, yang sesuai dengan karakteristik kristal kalsium oksida (CaO). Meski demikian, aviation fuel yang dihasilkan masih belum memenuhi standar Jet A/A-1 karena densitas yang didapatkan aviation fuel sekitar 892–909,38 kg/m³ dan viskositas sekitar 2,406–2,804 mm²/s masih di tidak sesuai standar, yaitu pada densitas (775–840 kg/m³) dan viskositas (idealnya 1,3–1,9 mm²/s pada 40 °C). Temuan ini menunjukkan bahwa pasir pantai Lombok memiliki potensi kuat sebagai katalis pada proses pirolisis limbah ban, namun masih perlu dilakukannya proses upgrading lanjutan terhadap aviation fuel hasil pirolisis, guna menurunkan densitas dan viskositas agar sesuai dengan standar Jet A/Jet A-1. Penelitian ini diharapkan memberikan hasil yang komprehensif dalam skala laboratorium dan berkontribusi pada pengembangan teknologi pembuatan aviation fuel dari limbah ban menggunakan katalis kalsium oksida.
This study aims to utilize calcium oxide (CaO) from Lombok quartz sand as a catalyst in the synthesis of aviation fuel through the pyrolysis process of waste tires. Three main variations were conducted, namely the weight percent variation of the catalyst (1 wt%, 3 wt%, and 5 wt%), the treatment process of Pink Beach sand, and the comparison of sand sources (Pink Beach, Tanjung Aan, Kuta Mandalika, and analytical CaO). This study tested several parameters, including GC-MS test, FTIR test, XRD test, BET test, XRF test, SEM-EDX test, density, and viscosity. The results showed that the CaO catalyst from Lombok beach sand successfully influenced the changes in the physical and chemical properties of aviation fuel as evidenced by BET test where the specific surface area was high (368.927 m²/g), SEM-EDX test where the irregular and porous particle surface indicated a large catalyst surface area and could identify Ca (42.1% weight) and O (57.4% weight) as the dominant elements, XRF test which obtained a very high concentration of (CaO) of 89.919%. and XRD which showed a typical CaO peak at 2θ = 37.37°, which is consistent with the crystalline characteristics of calcium oxide (CaO). However, the aviation fuel produced still does not meet the Jet A/A-1 standard because the density obtained by the aviation fuel is around 892-909.38 kg/m³ and the viscosity is around 2.406-2.804 mm²/s which is still not in accordance with the standard, which is in density (775-840 kg/m³) and viscosity (ideally 1.3-1.9 mm²/s at 40 °C). These findings indicate that Lombok beach sand has strong potential as a catalyst in the pyrolysis process of waste tires, but there is still a need for further upgrading of the pyrolyzed aviation fuel, in order to reduce density and viscosity to comply with Jet A/Jet A-1 standards. This research is expected to provide comprehensive results on a laboratory scale and contribute to the development of aviation fuel production technology from waste tires using calcium oxide catalyst."
