Next Article in Journal
Effect of Temperature, Wettability and Relative Permeability on Oil Recovery from Oil-wet Chalk
Next Article in Special Issue
Biofuel Impacts on World Food Supply: Use of Fossil Fuel, Land and Water Resources
Previous Article in Journal
Distinguishability, Information and Useful Energies
Article Menu

Export Article

Open AccessArticle
Energies 2008, 1(1), 3-18;

Waste Cooking Oil as an Alternate Feedstock for Biodiesel Production

Civil and Resources Engineering, Dalhousie University, Room D510, 1360 Barrington St., Box 1000, Halifax, N.S. B3J 2X4, Canada
Process Engineering, Dalhousie University, Halifax, NS, Box 1000, Halifax, N.S. B3J 2X4, Canada
Author to whom correspondence should be addressed.
Received: 27 March 2008 / Accepted: 9 April 2008 / Published: 10 April 2008
Full-Text   |   PDF [171 KB, uploaded 17 March 2015]   |  


As crude oil price reach a new high, the need for developing alternate fuels has become acute. Alternate fuels should be economically attractive in order to compete with currently used fossil fuels. In this work, biodiesel (ethyl ester) was prepared from waste cooking oil collected from a local restaurant in Halifax, Nova Scotia, Canada. Ethyl alcohol with sodium hydroxide as a catalyst was used for the transesterification process. The fatty acid composition of the final biodiesel esters was determined by gas chromatography. The biodiesel was characterized by its physical and fuel properties including density, viscosity, acid value, flash point, cloud point, pour point, cetane index, water and sediment content, total and free glycerin content, diglycerides and monoglycerides, phosphorus content and sulfur content according to ASTM standards. The viscosity of the biodiesel ethyl ester was found to be 5.03 mm2/sec at 40oC. The viscosity of waste cooking oil measured in room temperature (at 21° C) was 72 mm2/sec. From the tests, the flash point was found to be 164oC, the phosphorous content was 2 ppm, those of calcium and magnesium were 1 ppm combined, water and sediment was 0 %, sulfur content was 2 ppm, total acid number was 0.29 mgKOH/g, cetane index was 61, cloud point was -1oC and pour point was -16oC. Production of biodiesel from waste cooking oils for diesel substitute is particularly important because of the decreasing trend of economical oil reserves, environmental problems caused due to fossil fuel use and the high price of petroleum products in the international market. View Full-Text
Keywords: Waste cooking oil; alternate energy; biodiesel; feedstock; fuel characterization Waste cooking oil; alternate energy; biodiesel; feedstock; fuel characterization

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Chhetri, A.B.; Watts, K.C.; Islam, M.R. Waste Cooking Oil as an Alternate Feedstock for Biodiesel Production. Energies 2008, 1, 3-18.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top