Purifikasi Biodiesel Menggunakan Deep Eutectic Solvent

Niawanti, Helda (2017) Purifikasi Biodiesel Menggunakan Deep Eutectic Solvent. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Purifikasi merupakan langkah penting dalam produksi biodiesel untuk memenuhi
standar biodiesel. Biodiesel pada penelitian ini dipurifikasi menggunakan Deep
Eutectic Solvent (DES). DES digunakan untuk mengurangi unreacted oil dan
unsaponifiable matter pada biodiesel berbahan baku minyak dedak padi. Tujuan
dari penelitian ini adalah untuk mempelajari pengaruh waktu ekstraksi, temperatur
ekstraksi dan rasio molar crude biodiesel/DES terhadap kadar FAME dan
biodiesel recovery. Minyak dedak padi yang digunakan dalam penelitian ini
mengandung 16,49% dengan free fatty acid (FFA) sebesar 44,75%. Acid
catalyzed methanolysis digunakan untuk mengkonversi minyak dedak padi
menjadi biodiesel dengan kondisi operasi: T = 60 °C, t = 8 jam, rasio molar
minyak terhadap metanol = 1/10, H2SO4 = 1% w/w minyak. Biodiesel yang
diperoleh mengandung 89,05 % FAME dengan konten FFA sangat rendah
(0,05%). DES dibuat dari campuran kolin klorida dan etilena glikol dengan rasio
molar 1/2. Rasio molar crude biodiesel/DES adalah 1/2, 1/4 dan 1/8. Waktu
ekstraksi divariasi dari 15 menit sampai 240 menit dengan temperatur ekstraksi
30, 45 dan 60 °C. Kandungan FAME tertinggi pada studi ini diperoleh setelah
ekstraksi selama 240 menit pada suhu 60 °C dan rasio molar crude biodiesel/DES
adalah 96,87 %, biodiesel recovery sebesar 89,13 % ± 0,0001 dan FFA 0,01 %.
Biodiesel setelah purifikasi lebih stabil dalam penyimpanan, diamati dari
rendahnya penurunan iodine value dibandingkan pada crude biodiesel setelah
waktu penyimpanan 1 bulan. Penelitian ini menunjukkan bahwa DES memiliki
potensi untuk memurnikan biodiesel dari bahan baku non edible oil, seperti
minyak dedak padi.
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Purification is a crucial step in biodiesel production to meet the biodiesel
standard. This study purified biodiesel using deep eutectic solvent (DES). DES
was used to reduce unreacted oil and unsaponifiable matter in rice bran oil
based biodiesel. The objectives of this work were to study the effect of
extraction time, extraction temperature and molar rasio biodiesel/DES on the
content and recovery of fatty acid methyl ester (FAME). Rice bran used in this
work contains 16.49% of oil with initial free fatty acids (FFA) of 44.75%. Acid
catalyzed methanolysis was employed to convert rice bran oil (RBO) into
biodiesel under following operation conditions: T = 60 oC, t = 8 h, molar ratio
of oil to methanol = 1/10, H2SO4 = 1% w/w of oil. Rice bran oil based
biodiesel obtained contain 89.05 % of FAME with very low FFA content (0.05
%). DES was made from a mixture of choline chloride and ethylene glycol
with molar ratio of 1/2. Molar ratio of crude biodiesel to DES were 1/2, 1/4 and
1/8. Extraction time was varied from 15 minutes to 240 minutes at 30, 45 and
60 oC. The highest FAME content were obtained after purification for 240 min.
at 60 oC and molar ratio crude biodiesel to DES 1/8 was 96.87%, biodiesel
recovery and FFA at this condition were 89.13 % ± 0.0001 and 0.01 %,
respectively. Purified biodiesel was more stable than crude biodiesel during
storage, it can be seen from iodine value, purified biodiesel had lower iodine
value decreasing than crude biodiesel. This work shows that DES has potential
to purify biodiesel from non-edible raw material, such as RBO.

Item Type:	Thesis (Masters)
Additional Information:	RTK 660.284 2 Nia p
Uncontrolled Keywords:	Biodiesel; Deep Eutectic Solvent; FAME; Purifikasi; minyak dedak padi
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Industrial Technology > Chemical Engineering > 24101-(S2) Master Thesis
Depositing User:	Users 13 not found.
Date Deposited:	16 May 2017 03:48
Last Modified:	28 Dec 2017 08:27
URI:	http://repository.its.ac.id/id/eprint/41278

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