Bancin, Sutomo (2026) Konversi Minyak Biji Kapuk Menjadi Biodiedel Sebagai Bahan Bakar Alternatif Untuk Aplikasi Bahan Bakar Kapal Dengan Penambahan Cetane Number Improver. Bachelor thesis, Institut Teknologi Kalimantan.
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Abstract
The shipping sector continues to rely on fossil fuels, leading to resource depletion and increased environmental pollution. In line with International Maritime Organization regulations—specifically MARPOL Annex VI and the Global Sulphur Cap, which have limited fuel sulfur content to 0.50% (mass by mass) since 2020—the development of eco-friendly alternative fuels has become increasingly important. While research on biodiesel derived from vegetable oils is extensive, studies on the use of biodiesel from kapok seed oil (*Ceiba pentandra*) in marine diesel engines remain limited. Furthermore, there is a lack of research regarding the impact of adding cetane number improvers (CNI)—specifically 2-Ethylhexyl Nitrate (2-EHN)—on fuel properties, engine performance, and exhaust emissions. This study aims to investigate the conversion of kapok seed oil into biodiesel and evaluate the effects of adding CNI on fuel properties, engine performance, and exhaust emissions. The biodiesel was produced via esterification and transesterification using methanol and a KOH catalyst, then blended with Dexlite diesel fuel to create B50 and B60 blends, each supplemented with 0.3% 2-EHN. The B50 blend delivered the best performance, while the B60 blend resulted in a 43.2% reduction in emission opacity. Biodiesel derived from kapok seed oil with the addition of CNI shows potential as an alternative fuel for marine diesel engines.
| Item Type: | Thesis (Bachelor) |
|---|---|
| Subjects: | V Naval Science > V Naval Science (General) |
| Divisions: | Jurusan Sains, Teknologi Pangan, dan Kemaritiman > Teknik Perkapalan |
| Depositing User: | Sutomo Sutomo Bancin |
| Date Deposited: | 17 Jul 2026 03:00 |
| Last Modified: | 17 Jul 2026 03:00 |
| URI: | http://repository.itk.ac.id/id/eprint/27198 |
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