Yulianti, Vinanta (2025) Pengaruh Penggunaan Adsorben Jenis Logam Oksida dan Karbon Aktif Termodifikasi Garam Klorida dalam Pengurangan Angka Asam pada Bahan Bakar Diesel. S1 thesis, Universitas Jambi.
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Abstract
Fraksinasi crude oil hasil pirolisis plastik pada rentang suhu 220-360 ℃ menghasilkan bahan bakar diesel dengan kandungan Total Acid Number (TAN) yang cukup tinggi dan belum memenuhi spesifikasi bahan bakar diesel. Untuk itu metode adsorpsi dipilih untuk mengurangi TAN pada diesel dengan dua jenis adsorben berupa material berpori dan logam oksida. Karbon aktif dikenal dengan struktur berpori dengan luas permukaan yang besar. Penelitian ini memodifikasi karbon aktif menggunakan garam klorida berupa CaCl2 dan MgCl2. Di sisi lain, MgO merupakan logam oksida dengan sifat kebasaan yang tinggi untuk menetralkan senyawa asam pada bahan bakar diesel. Karakterisasi dilakukan menggunakan instrumen SEM, FTIR, BET, XRF dan CO2-TPD. Hasilnya, modifikasi karbon aktif menggunakan CaCl2 dan MgCl2 mampu meningkatkan luas permukaan, penambahan gugus fungsi Ca dan Mg serta meningkatkan persentase removal TAN hingga 47,061%. Pengaruh variasi massa, waktu kontak dan suhu dilakukan dalam proses adsorpsi. Hasilnya, MgO mampu menurunkan TAN pada diesel hingga 0,5607 mg KOH/g pada massa adsorben 5% w/v, waktu kontak 15 menit dan suhu 25 ℃. Sedangkan ACCa dan ACMg mampu menurunkan TAN pada diesel hingga 3,0842 mg KOH/g pada massa adsorben 5% w/v, waktu kontak 30 menit (ACMg) dan 60 menit (ACCa) pada suhu 80 ℃. Fractionation of Crude oil from plastic pyrolysis at a temperature range of 220-360 ℃ produces diesel fuel with a fairly high Total Acid Number (TAN) content and does not meet the specifications of diesel fuel. For this reason, the adsorption method was chosen to reduce TAN in diesel with two types of adsorbents in the form of porous materials and metal oxides. Activated carbon is known for its porous structure with a large surface area. This study modifies activated carbon using chloride salts in the form of CaCl2 and MgCl2. On the other hand, MgO is a metal oxide with high basicity properties to neutralize acidic compounds in diesel fuel. Characterization was carried out using SEM, FTIR, BET, XRF and CO2-TPD instruments. As a result, modification of activated carbon using chloride salts increased the surface area, the addition of Ca and Mg functional groups and increased the percentage of TAN removal by up to 47.061%. The effect of mass variation, contact time and temperature was carried out in the adsorption process. As a result, MgO was able to reduce TAN in diesel up to 0.5607 mg KOH/g at an adsorbent mass of 5% w/v, a contact time of 15 minutes and a temperature of 25℃. Meanwhile, ACCa and ACMg were able to reduce TAN in diesel up to 3.0842 mg KOH/g at an adsorbent mass of 5% w/v, contact time of 30 minutes (ACMg) and 60 minutes (ACCa) at a temperature of 80 ℃.
| Type: | Thesis (S1) |
|---|---|
| Uncontrolled Keywords: | Total Acid Number (TAN), Adsorpsi, Karbon Aktif, dan Magnesium Oksida (MgO). |
| Subjects: | L Education > L Education (General) |
| Divisions: | Fakultas Sains dan Teknologi > Kimia |
| Depositing User: | YULIANTI |
| Date Deposited: | 03 Jul 2025 06:33 |
| Last Modified: | 03 Jul 2025 06:33 |
| URI: | https://repository.unja.ac.id/id/eprint/81097 |
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