Effects of Transesterification Process Times in the Biodiesel Production of Used Cooking Oil Using the Adsorbent of Activated Charcoal

Umi, Atika (2011) Effects of Transesterification Process Times in the Biodiesel Production of Used Cooking Oil Using the Adsorbent of Activated Charcoal. S1 thesis, UNY.

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EFFECTS_OF_DURATION_OF_TRANSESTERIFICATION_PROCESS_OF_BIODIESEL_PRODUCTION_OF_USED_COOKING_OIL_USING_ADSORBENT_OF_ACTIVATED_CHARCOAL.doc

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Abstract

This study aims at determining effects of transesterification process times in the biodiesel production of used cooking oil bleached using activated charcoal and determining characters of the biodiesel based on SNI specifications namely density, viscosity, pour point, flash point, and heat of combustion. Biodiesel production of used cooking oil was done through two stages. The first stage was the purification process that aimed at reducing total fatty acids in the oil. Purification process consisted of three stages, namely despicing or flavour omission, neutralization using NaOH solution of 16%, and bleaching using activated charcoal. The second phase was the process of transesterification. Transesterification process was reaction between purified oil and methanol with the ratio of oil volume: methanol volume of 5:1 using NaOH catalyst. The process was conducted by using time variations of 30, 45, 50, 65 minutes; and then, biodiesels produced were called biodiesel A, biodiesel B, biodiesel C, and biodiesel D. Density, viscosity, pour point, flash point, and the calorific value of combustion of biodiesel A, B, C, and D gained were tested based on SNI. Then, they were analyzed using FTIR spectrophotometer. Analysis of FTIR spectra in each biodiesel showed a typical peak for Group C-O ester appeared (1750-1740 cm-1), C-O ester (1300-1000 cm-1) and C-H aliphatic (3006-2850 cm-1). The test results of biodiesel A, B, C, and D showed values in accordance with the provisions of SNI. Therefore, the transesterification process times did not affect density, pour point, flash point, and the combustion heat, however, they affected viscosity. Keywords: used cooking oil, transesterification times, biodiesel

Item Type: Thesis (S1)
Subjects: Matematika dan Ilmu Pengetahuan Alam > Kimia
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam > Jurusan Pendidikan Kimia > Kimia
Depositing User: Eprints
Date Deposited: 07 Aug 2012 03:36
Last Modified: 29 Jan 2019 15:27
URI: http://eprints.uny.ac.id/id/eprint/3077

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