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Biofuels Volume 5, 2014 - Issue 6
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Research Articles

The production of biodiesel from used cooking oil; characterization of key fuel properties of ethyl esters and diesel-biodiesel blends

Kashif NadeemNational University of Sciences and Technology, School of Chemical and Materials Engineering, H-12Islamabad, Pakistan
,
Hassnain MahmoodNational University of Sciences and Technology, School of Chemical and Materials Engineering, H-12Islamabad, Pakistan
,
Hasan RazaNational University of Sciences and Technology, School of Chemical and Materials Engineering, H-12Islamabad, Pakistan
,
Mehwish BatoolNational University of Sciences and Technology, School of Chemical and Materials Engineering, H-12Islamabad, Pakistan;Institute of Chemical Engineering and Technology, Faculty of Engineering and Technology University of the Punjab, Lahore-54000, Pakistan
,
Shazia Naz MalikNFC Institute of Engineering and Technological Trainin, PO Fertilizer Khanewal Road Multan, Pakistan
,
Aamir IjazInstitute of Chemical Engineering and Technology, Faculty of Engineering and Technology University of the Punjab, Lahore-54000, Pakistan
&
Javeed A. AwanInstitute of Chemical Engineering and Technology, Faculty of Engineering and Technology University of the Punjab, Lahore-54000, PakistanCorrespondence[email protected]
 show all
Pages 591-596 | Published online: 27 Apr 2015
 
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Abstract

In this work, the transesterification process was adopted to convert used vegetable oil into biodiesel, while using KOH as catalyst. Ethyl ester was produced with mixed feedstock of various waste cooking oils that had a free fatty acids (FFA) content of 2.5%. The catalyst concentration of 1.25% w/w and ethanol to oil molar ratio of 6:1 were found to be optimum at a temperature of 343.15 K. The blending of petroleum diesel with produced ethyl ester was found to be more advantageous as the densities and kinematic viscosities of mixtures are slightly increased compared with the petroleum-diesel. Important fuel parameters such as viscosity, density, flash point, pour point and higher heating value (HHV) were characterized according to ASTM standards.

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