Relationships among flash point, carbon residue, viscosity and some impurities in biodiesel after ethanolysis of rapeseed oil
Language English Country Great Britain, England Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
20537532
DOI
10.1016/j.biortech.2010.05.003
PII: S0960-8524(10)00814-X
Knihovny.cz E-resources
- MeSH
- Biomechanical Phenomena MeSH
- Biofuels analysis MeSH
- Potassium analysis MeSH
- Ethanol chemistry MeSH
- Glycerol analysis MeSH
- Hydrolysis MeSH
- Fatty Acids, Monounsaturated MeSH
- Rapeseed Oil MeSH
- Plant Oils chemistry MeSH
- Temperature MeSH
- Triglycerides analysis MeSH
- Carbon analysis MeSH
- Viscosity MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Biofuels MeSH
- Potassium MeSH
- Ethanol MeSH
- Glycerol MeSH
- Fatty Acids, Monounsaturated MeSH
- Rapeseed Oil MeSH
- Plant Oils MeSH
- Triglycerides MeSH
- Carbon MeSH
Many samples of rapeseed oil ethyl ester were prepared by alkaline-catalyzed transesterification at various conditions (reaction time, temperature, amount of catalyst, the molar ratio of ethanol to oil, the rotations of a disperser and the purification by water). The concentrations of the key impurities for biodiesel quality (the concentrations of monoglycerides, diglycerides, triglycerides, free glycerol, ethanol, free fatty acids, water) and some qualitative parameters (flash point, carbon residue, kinematics viscosity at 40 degrees C) were determined and then the relationships among them were found out. The relationships were characterized by the linear or non-linear statistical models. The found models enable the better understanding of the significance of the qualitative parameters and estimate them from the concentrations of impurities. The temperature dependence was also measured in the case of the viscosity of ethyl ester and used rapeseed oil.
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