Ferdinand, Jodi Adam (2022) Analisa Pengaruh Pengondisian Kelembaban Ruang Tangki Bahan Bakar Modifikasi Menggunakan Adsorben Silica Gel Terhadap Degradasi Biodiesel B-50 Oleh Bakteri Berbasis Eskeperimen. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Bahan bakar biodiesel sangat rentan dengan terjadinya degradasi seiring lamanya penyimpanan. Degradasi pada bahan bakar biodiesel dapat merusak kualitas sifat-sifat atau properties bahan bakar, dan performa mesin. Degradasi ini dapat terjadi melalui empat mekanisme, yaitu hidrolisis, Oksidasi, penguraian thermal, dan kontaminasi bakteri. Sifat higroskopis biodiesel dapat memicu reaksi hidrolisis sehingga membentuk asam-asam lemak bebas yang dapat menyebabkan korosi. Keberadaan kandungan air juga memicu pertumbuhan bakteri pada biodiesel yang dapat membentuk endapan. Penelitian ini bertujuan untuk menganalisis pengaruh perlakukan sistem dehumidifier dengan media adsorben silica gel pada tangki bahan bakar. Parameter laju degradasi adalah bilangan asam (total acid number) dan parameter pertumbuhan bakteri adalah jumlah koloni bakteri. Penelitian dilakukan dengan percobaan menggunakan model tangki selama 8 minggu dengan 2 pengkondisian. Penggunaan sistem dehumidifier dengan media adsorben silica gel pada tangki bahan bakar modifikasi dapat mengurangi laju degradasi dengan parameter perubahan bilangan asam biodiesel sebesar 10.684% pada minggu ke 8. Terjadi penurunan perbedaan koloni bakteri sebesar 83.33% minggu ke 6.
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Biodiesel fuel is very susceptible to degradation over time of storage. Degradation of biodiesel fuel can damage the quality of the properties or properties of the fuel, and engine performance. This degradation can occur through four mechanisms, namely hydrolysis, oxidation, thermal decomposition, and bacterial contamination. The hygroscopic nature of biodiesel can trigger a hydrolysis reaction to form free fatty acids that can cause corrosion. The presence of water content also triggers the growth of bacteria in biodiesel which can form deposits. This study aims to analyze the effect of treating the dehumidifier system with silica gel as adsorbent media on the fuel tank. The degradation rate parameter is the total acid number and the bacterial growth parameter is the number of bacterial colonies. The research has been carried out with experiments using a tank model for 8 weeks with 2 conditions. The use of a dehumidifier system with silica gel as adsorbent media in the modified fuel tank can reduce the rate of degradation with the parameter changes in the biodiesel acid number of 10.684% at week 8. There is a decrease in bacterial colony differences of 83.33% at week 6.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Bakteri, Biodiesel, Silica Gel, Laju Degradasi, Bilangan Asam, Koloni Bakteri, Bacteria, Biodiesel, Silica Gel, Degradation Rate, Acid Number, Bacterial Colonies |
| Subjects: | T Technology > TP Chemical technology > TP359.B46 Biodiesel fuels. V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 23 Feb 2026 03:53 |
| Last Modified: | 23 Feb 2026 03:53 |
| URI: | http://repository.its.ac.id/id/eprint/132575 |
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