Sintesis 2-Hidroksietil Ester Dari Minyak Jelantah Dan Etilen Glikol Sebagai Bioaditif Pada Bahan Bakar Biodiesel

Firdhausya, Talitha Fitra (2025) Sintesis 2-Hidroksietil Ester Dari Minyak Jelantah Dan Etilen Glikol Sebagai Bioaditif Pada Bahan Bakar Biodiesel. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sintesis 2-Hidroksietil Ester (HEE) dari minyak jelantah dan etilen glikol berhasil dilakukan dengan perolehan konversi sebesar 91,26% dan rendemen sebesar 70,7%. HEE dianalisis menggunakan Kromatografi Gas – Spektrometer Massa (KG-SM) diperoleh kelimpahan HEE sebesar 97,11%. Produk HEE dicampurkan dengan co-solvent n-heksana dengan konsentrasi HEE 75% menjadi B-HEE yang selanjutnya diuji kadar air, fluiditas (titik tuang dan titik kabut), dan sifat fisik lainnya (viskositas kinematik, densitas, dan titik nyala). B-HEE dengan variasi konsentrasi 0,1; 0,3; dan 0,5% ditambahkan dalam biodiesel dan dievaluasi terhadap kadar air biodiesel. Kadar air biodiesel meningkat dengan bertambahnya konsentrasi bioaditf. Kadar air biodiesel pada konsentrasi B-HEE 0,5% sebesar 362,5 ppm melebihi kadar air maksimum dalam Standar Indonesia No.189 K/10/DJE/2019, sehingga evaluasi pada fluiditas dan sifat fisik lainnya dilanjutkan dengan konsentrasi 0,3%. Penambahan 0,3% B-HEE efektif dalam meningkatkan fluiditas biodiesel pada suhu rendah yang ditunjukkan dengan turunnya titik tuang
dari 13°C menjadi 12°C dan titik kabut dari 14°C menjadi 13°C. Penambahan 0,3% B-HEE menurunkan densitas biodiesel dari 0,867 g/cm3 menjadi 0,863 g/cm3, viskositas kinematik biodiesel dari 4,97 cSt menjadi 4,83 cSt, serta meningkatkan
titik nyala biodiesel dari 168°C menjadi 175°C sesuai dengan Standar Indonesia No.189 K/10/DJE/2019.
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The synthesis of 2-Hydroxyethyl Ester (HEE) from waste cooking oil and ethylene glycol was successfully carried out with a conversion rate of 91.26% and a yield of 0.7%. HEE was analyzed using Gas Chromatography – Mass Spectrometry (GCMS), yielding an HEE abundance of 97.11%. The HEE product was mixed with nhexane co-solvent at a HEE concentration of 75% to form B-HEE, which was then tested for water content, fluidity (pour point and cloud point), and other physical
properties (kinematic viscosity, density, and flash point). B-HEE with varying concentrations of 0.1%, 0.3%, and 0.5% was added to biodiesel and evaluated for biodiesel moisture content. The water content of biodiesel increased with increasing bioadditive concentration. The water content of biodiesel at a B-HEE concentration of 0.5% was 362.5 ppm, exceeding the maximum water content specified in
Indonesian Standard No.189 K/10/DJE/2019, so evaluations of fluidity and other physical properties were continued at a concentration of 0.3%. The addition of 0.3% B-HEE effectively improves the fluidity of biodiesel at low temperatures, as indicated by a decrease in the pour point from 13°C to 12°C and the cloud point from 14°C to 13°C. The addition of 0.3% B-HEE reduced the density of biodiesel
from 0.867 g/cm³ to 0.863 g/cm³, the kinematic viscosity of biodiesel from 4.97 cSt to 4.83 cSt, and increased the flash point of biodiesel from 168°C to 175°C in accordance with Indonesian Standard No.189 K/10/DJE/2019.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Biodiesel, Fluidity, Water Content, 2-Hydroxyethyl Ester, Waste Cooking Oil, Biodiesel, Fluiditas, Kadar Air, 2-Hidroksietil Ester, Minyak Jelantah
Subjects:	Q Science > QD Chemistry > QD251.2 Chemistry, Organic. Biochemistry Q Science > QD Chemistry > QD305.A2 O73 Esterification
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis
Depositing User:	Talitha Fitra Firdhausya
Date Deposited:	06 Aug 2025 01:33
Last Modified:	06 Aug 2025 01:33
URI:	http://repository.its.ac.id/id/eprint/127634

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