Conversion of palm oil sludge to biodiesel using alum and KOH as catalysts

Abdullah, Abdullah Conversion of palm oil sludge to biodiesel using alum and KOH as catalysts. Conversion of palm oil sludge to biodiesel using alum and KOH as catalysts.

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Abstract

Abstract Conversion of palm oil sludge was studied by esterification and transesterification which used methanol as a reactant. The esterification of palm oil sludge was performed by variation of molar ratios of methanol to palm oil sludge (5:1, 10:1, 15:1, 20:1, and 25:1) and percentages of alum catalyst (3–7 wt%) at 60 °C for 3 h with stirring rate 300 rpm. Transesterification was also carried out by variation of KOH (0.5–2.5 wt%) at 60 °C and stirring rate 300 rpm for 1 h. The optimum molar ratio of methanol to palm oil sludge was 20:1 (6% alum catalyst). Meanwhile, the optimum concentration for transesterification was 1.5% of KOH. The yield of biodiesel production was 93%, the density and kinematic viscosity were 0.864 g mL−1 and 12.8 mm2 s−1, respectively. The existence of ester compounds in the product was shown by Fourier Transform Infrared Spectrometry spectrum data of carbonyl group (CO) at 1744 cm−1 and CO of ester at 1234; 1119 and 1026 cm−1. Gas Chromatograph-Mass Spectrometry analysis showed the biodiesel product contains palmitic acid methyl ester (23.4%), trans-methyl oleate (75.5%), cis-methyl oleate (< 0.1%), and methyl stearate (1.2%).

Item Type: Article
Subjects: A General Works > AI Indexes (General)
Depositing User: Mr Arief Mirathan
Date Deposited: 06 Dec 2017 01:15
Last Modified: 06 Dec 2017 01:15
URI: http://eprints.ulm.ac.id/id/eprint/2539

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