Desvitasari, Aulia Fitriani (2025) Sintesis Alumina-Silika dari Abu Sekam Padi untuk Aplikasi Katalis Produksi Biodiesel. Undergraduate thesis, UPN "Veteran" Jawa Timur.
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Abstract
Alumina-silica is a versatile material widely used in various industries. This research utilizes rice husk ash as a source of silica (SiO₂) and aluminum sulfate (Al₂(SO₄)₃) as a source of alumina. This study aims to synthesize catalyst-grade alumina-silica, determine the effect of sodium silicate concentration (dilution ratios from 1:4 to 1:8), and the effect of aluminum sulfate addition volume (50-150 mL) under various pH conditions on the material's composition and morphology. The synthesis was carried out using the precipitation method at room temperature. The synthesized material was characterized using SEM-EDX and XRD and subsequently tested for its performance as a heterogeneous catalyst in the production of biodiesel from cooking oil via a transesterification process. The results indicate that the dilution ratio and the volume of aluminum sulfate significantly affect the material's morphology, with ratios of 1:4 and 1:5 producing particles with a spherical morphology and tight interparticle spacing. The best catalyst performance was obtained at a sodium silicate dilution ratio of 1:4 with the addition of 100 mL of aluminum sulfate at pH 7, which yielded biodiesel with a yield of 69.8%, a density of 890 kg/m³, a viscosity of 5.7 cSt, and a cetane number above 62.3.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > T Technology (General) T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155 Chemical engineering |
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| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||
| Depositing User: | Ms. Aulia Fitriani Desvitasari - | ||||||||
| Date Deposited: | 12 Sep 2025 08:12 | ||||||||
| Last Modified: | 12 Sep 2025 08:12 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/42980 |
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