Sakinah, Yusratus (2025) Sintesis Dan Karakterisasi Komposit Natrium Silika Karbonat (NaSiCO3) Dari Sekam Padi Dengan Metode Sol Gel. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
This study aims to synthesize and characterize sodium silicate carbonate (NaSiCO₃) composites as catalysts in biodiesel transesterification by utilizing rice husk waste as a source of silica. The composites were prepared using the sol-gel method by reacting sodium silicate solution, obtained from rice husk extraction, with CO₂ gas. The parameters analyzed in the composite include XRF, SEM-EDX, and XRD to analyze the elemental content of rice husks, morphology, elemental composition, and crystal structure of the composite. XRF results show that rice husks have a silica content of 82%. SEM-EDX characterization showed that sample V-09 had an aggregate clump morphology with a needle-like structure and contained 27.66% Na, 25.06% Si, and 47.28% O. XRD analysis confirmed the presence of amorphous silica and Na₂CO₃ in the composite. The ratio of sodium silicate concentration and pH affects the composite composition, where higher concentrations and lower pH increase Na content, while higher pH increases Si content. As a catalyst, the NaSiCO₃ composite produces biodiesel with the best yield of 63.8% at pH 11 with a Na₂SiO₃ solution concentration of 1:5. Characterization of the biodiesel showed that density, viscosity, cetane number, and FAME content met SNI standards. Thus, this study demonstrates that the utilization of rice husks as raw material can serve as a sustainable solution in catalyst synthesis for biodiesel production.
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | T Technology > TP Chemical technology > TP155 Chemical engineering | ||||||||||||
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||||||
| Depositing User: | Yusratus Sakinah sakinah | ||||||||||||
| Date Deposited: | 28 Jul 2025 03:10 | ||||||||||||
| Last Modified: | 28 Jul 2025 03:10 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/41152 |
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