Azhad, Muhammad Faizur Rijal (2020) Analisis Penggunaan Gel Silika pada Model Tangki Bahan Bakar untuk Mengurangi Degradasi Biodiesel Kelapa Sawit dengan Variasi Kadar Campuran. 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. Penelitan ini bertujuan untuk menganalisis pengaruh perlakuan desikan gel silika pada tangki bahan bakar dan memberi variabel untuk kadar biodiesel. Parameter laju degradasi adalah Bilangan Asam (total acid number) dan parameter pertumbuhan bakteri adalah jumlah koloni bakteri. Penelitian akan dilakukan dengan percobaan menggunakan model tangki selama 6 minggu dengan 6 pengkondisian. Penggunaan gel silika pada tangki bahan bakar dapat mengurangi laju degradasi dengan parameter perubahan bilangan asam biodiesel sebesar 32.2% pada B30, 25.4% pada B50, namun terjadi peningkatan laju degradasi pada B40 sebesar 30.8%. Terjadi penurunan perbedaan koloni bakteri sebesar 96.6% pada B30, 39.4% pada B40, namun tidak terjadi perubahan pada B50. Dari olahan data pengujian, performa gel silika dalam mengurangi laju degradasi tidak berhubungan dengan kadar campuran biodiesel.
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Biodiesel fuel is susceptible to degradation along with storaging time. Degradation on biodiesel fuel can damage it’s properties and engine performance. This degradation can occur through four phases, that is hydrolysis, oxidation, thermal decomposition, and bacterial contamination. Hygroscopic properties of biodiesel can cause hydrolysis reactions to form free fatty acids which can cause corrosion to engine. Water content also promote bacterial growth on biodiesel which can form deposits. This research aims to analyze the usage of silica gel desiccant in fuel tank with biodiesel content variables. The degradation rate parameter is total acid number and the bacterial growth parameter is the number of bacterial colonies. The research will be carried out by experiments using tank model for 6 weeks with 6 tank conditioning. Silica Gel application in fuel tank can reduce degradation rate of biodiesel by 32.2% on B30, 25.4% on B50, but an increase in degradation rate at B40 by 30.8%. There was decrease in bacterial colony difference on B30 by 96.6%, and on B40 by 39.4%, but there was no change at B50. According calculated test results, the performance of silica gel in decreasing degradation rate is not related to biodiesel mixture levels.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSSP 623.872 36 Azh a-1 2020 |
| Uncontrolled Keywords: | Bakteri, Bilangan asam, Biodiesel, Gel Silika, Laju Degradasi, Bacteria, Degradation rate, Silica Gel, Total Acid Number |
| Subjects: | T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery > TJ324.5 Fuel systems |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Faizur Rijal Azhad |
| Date Deposited: | 12 Nov 2024 01:23 |
| Last Modified: | 12 Nov 2024 01:23 |
| URI: | http://repository.its.ac.id/id/eprint/73728 |
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