Gita, Amieria Citra and Haryanto, Agus and Saputra, Tri Wahyu and Telaumbanua, Marely (2018) PENENTUAN NILAI PARAMETER KINETIKA ORDE SATU PADA SINTESIS BIODIESEL DARI MINYAK JELANTAH. Jurnal Teknik Pertanian Lampung, 7 (2). pp. 72-70. ISSN 2302-559X

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Abstract

Biodiesel is one of alternative energy of diesel engine or diesel fuel from transesterification method by reacting waste cooking oil with methanol that will produce methyl ester and glycerol with the aid of basic catalyst. The aims of this research to observe the influence of temperature and reaction time to produce biodiesel and to determine the value of first order kinetics parameters on biodiesel synthesis. This research was conducted using transesterification method with molar 1: 6 ratio with reaction time of 0.25, 0.5, 1, 2, 3, 6 and 10 min and the reaction temperature of 30, 35, 40, 45, 50, and 55 °C. The materials used in this research include waste cooking oil, methanol and NaOH. Parameters analyzed were yield, density, viscosity, reaction rate constant and activation energy. The reaction kinetics is constructed with the assumption that the transesterification reaction is a first order reaction and is a function of the temperature and non-biodiesel concentration. The results showed that the yield of biodiesel ranged from 0 to 78.44%. The highest yield was at temperature of 55 °C and reaction time of 10 minutes. The resulted biodiesel has a density between 0,863-0,885 gram/ml and viscosity of 2,825-5,277 cSt meeting the SNI. The results showed that the higher the reaction temperature the greater the value of the reaction rate constant (k). The k values of 9.8 (10-4) s-1, 10,8 (10-4) s-1, 11.67 (10-4) s-1, 14,00 (10-4) s-1, 14.83 (10-4) s-1 and 21.67 (10-4) s-1 were respectively obtained for temperatures of 30, 35.40, 45.50 and 55 °C. The value of the activation energy (Ea) of the waste cooking oil transesterification reaction was 23.83 kJ/mol.

Item Type: Article
Subjects: T Technology > TP Chemical technology
Divisions: Fakultas Pertanian (FP) > Prodi Teknik Pertanian
Depositing User: Dr. Ir. AGUS HARYANTO
Date Deposited: 14 Nov 2019 09:51
Last Modified: 14 Nov 2019 09:51
URI: http://repository.lppm.unila.ac.id/id/eprint/9222

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