Improving cold flow properties of canola-based biodiesel

摘要: Methods for improving the cold flow properties of canola-based biodiesel are described. Freezing point depression via dilution is evaluated through controlled studies methyl stearate freezing in seven different solvents, and palmitate three solvents. Without accounting solute activity, Hildebrand equation can predict impact an alkane solvent (pentane) to within 4 °C. However, there wide deviation other solutions, indicating ranging activities these Dilution toluene results greatest depression. In addition, several polymeric additives screened their effectiveness as pour depressants. After examining more than 13 polymers, including alkyl methacrylate homo- copolymers, it shown that poly(lauryl methacrylate) homopolymer most effectively improves properties. At 1% loading, lowers by much 30 °C low temperature filterability (LTFP) 28 When evaluating polymer concentration, concentrations 0.14% perform poorly, whereas 0.5% has only a slightly lower 1%. Concentrations above exhibit no improvement. Finally, limited amount mixing notably reduce LTFP samples.