Fuel properties and precipitate formation at low temperature in soy-, cottonseed-, and poultry fat-based biodiesel blends

被引：138

作者：

Tang, Haiying ^{[1
]}

Salley, Steven O. ^{[1
]}

Ng, K. Y. Simon ^{[1
]}

机构：

[1] Wayne State Univ, Dept Chem Engn & Mat Sci, Detroit, MI 48202 USA

来源：

FUEL | 2008年 / 87卷 / 13-14期

关键词：

biodiesel; precipitate formation; cold-flow properties;

D O I：

10.1016/j.fuel.2008.04.030

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The formation of precipitates in biodiesel blends may have serious implications for diesel engine fuel delivery systems. Precipitates were observed in Soybean oil (SBO-), cottonseed oil (CSO-), and poultry fat (PF-) based biodiesel blends after storage at 4 degrees C. CSO- and PF-based biodiesel had a lower mass of precipitates observed than the SBO-based. Moreover, different rates of precipitate formation were observed for the B20 versus the B100. These suggested that the formation of precipitate during cold temperature storage was dependent on the feedstock and blend concentration. The solvency effects of biodiesel blends were more pronounced at low temperature than at room temperature leading to a higher amount of precipitates formed. Fourier transform infrared (FTIR) spectra, and gas chromatography-flame ionization detector (GC-FID) chromatograms indicated that steryl glucosides are the major cause of precipitate formation in SBO-based biodiesel; while for PF-based biodiesel, the precipitates are due to monoglycerides. However, the precipitates from CSO-based biodiesel are due to both steryl glucosides and mono-glycerides. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3006 / 3017

页数：12