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Efficacy of specific gravity as a tool for prediction of biodiesel–petroleum diesel blend ratio

Permanent URL:
http://handle.nal.usda.gov/10113/54196
File:
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Abstract:
Prediction of volumetric biodiesel/petrodiesel blend ratio (VBD) from specific gravity (SG) data was the subject of the current investigation. Fatty acid methyl esters obtained from soybean, palm and rapeseed oils along with chicken fat (SME-1, SME-2, PME, RME and CFME) were blended (0–20vol%) with three ultra-low sulfur (<15ppm S) diesel (ULSD) fuels and SG at 15.6°C was measured. Least-squares statistical regression on SG data from each of the biodiesel/ULSD blend sets revealed highly linear relationships (R²>0.991) between SG and VBD. Blends with the highest R² values from each of the ULSD fuels were used as model systems to develop predictive equations useful for calculation of VBD from SG. The results indicated that accurate prediction of VBD from SG was most effective when applied to blends prepared from the same fuel-types as the model systems used to develop the predictive equations.
Author(s):
Bryan R. Moser
Note:
USDA Scientist Submission
Source:
Fuel 2012 September v.99
Language:
English
Publisher:
Elsevier Ltd
Year:
2012
Collection:
Journal Articles, USDA Authors, Peer-Reviewed