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Biomass and Bioenergy
Volume 22, Issue 3, March 2002, Pages 205-211
Volatility and boiling points of biodiesel from vegetable oils and tallow
Purchase
$ 35.95
References and further reading may be available for this article. To view references and further reading you must purchase this article.
J. W. GoodrumCorresponding Author Contact Information, E-mail The Corresponding Author
Department of Biological and Agricultural Engineering, University of Georgia, Athens, GA 30602, USA
Received 21 August 2001;
accepted 24 September 2001.
Available online 20 December 2001.
Abstract
Quality control of fuel-related properties of Biodiesel, such as volatility, is needed to obtain consistent engine performance by fuel users. The vapor pressures and boiling points of selected methyl esters and vegetable oils are proposed as quality control metrics for Biodiesel. This type of data was obtained by a rapid new method using thermogravimetric analysis (TGA). One atmosphere boiling points (bps) and temperature-dependent vapor pressures from 1 atm down to 5.332 kPa (40 mmHg) were measured for methyl and ethyl esters of rapeseed oil, canola oil, soybean oil, and tallow. Boiling points (1 atm) ranged from 340°C to 375°C. Methyl and ethyl esters of a given oil differ by ca. 5°C in bps. These results are discussed in terms of the fatty acid composition of the esters and oils. Calibrations showed that the TGA/laser orifice capsule method gave accuracy of ±5%.
Biomass and Bioenergy
Volume 22, Issue 3, March 2002, Pages 205-211
Volatility and boiling points of biodiesel from vegetable oils and tallow
Purchase
$ 35.95
References and further reading may be available for this article. To view references and further reading you must purchase this article.
J. W. GoodrumCorresponding Author Contact Information, E-mail The Corresponding Author
Department of Biological and Agricultural Engineering, University of Georgia, Athens, GA 30602, USA
Received 21 August 2001;
accepted 24 September 2001.
Available online 20 December 2001.
Abstract
Quality control of fuel-related properties of Biodiesel, such as volatility, is needed to obtain consistent engine performance by fuel users. The vapor pressures and boiling points of selected methyl esters and vegetable oils are proposed as quality control metrics for Biodiesel. This type of data was obtained by a rapid new method using thermogravimetric analysis (TGA). One atmosphere boiling points (bps) and temperature-dependent vapor pressures from 1 atm down to 5.332 kPa (40 mmHg) were measured for methyl and ethyl esters of rapeseed oil, canola oil, soybean oil, and tallow. Boiling points (1 atm) ranged from 340°C to 375°C. Methyl and ethyl esters of a given oil differ by ca. 5°C in bps. These results are discussed in terms of the fatty acid composition of the esters and oils. Calibrations showed that the TGA/laser orifice capsule method gave accuracy of ±5%.
Sandra
