OXIDATIVE STABILITY AND COLD FILTER PLUGGING POINT OF BIODIESEL BLENDS DERIVED FROM FATS AND SOY OIL

• DOI: 10.21577/0100-4042.20170619
• Publication Date: 2020-08-21T12:45:07Z
• Authors: João Braun; Samuel Santos; Guilherme Espíndola; Gabriel de Mattos; Diego Ongaratto; Diogo de Oliveira; Marlon da Silva; Vinícius Vendrusculo; Vinícius dos Santos; Rodrigo Renner; Fabrício Naciuk; Marcelo Marques; Luiz Fontoura
• Keywords: Chemistry; biodiesel; cold filter plugging point; oxidative stability; QD1-999; 01 natural sciences; 7. Clean energy; 0105 earth and related environmental sciences

Biodiesel made from oils is rich in polyunsaturated fatty acids methyl esters, and, consequently, presents high tendency to oxidize.Biodiesel fats, on the other hand, mainly comprised by saturated chains.Although it highly stable, they easily crystalize at low temperatures.Blends both can exhibit optimized properties.In this work, oxidative stability, expressed induction period (IP), and cold filter plugging point (CFPP) of blends palm, palm kernel, babassu, tallow or lard biodiesels with soy one were measured.Biodiesel samples prepared two steps transesterification methodology KOH catalysis followed H 2 SO 4 .IP increases, as fat biodiesel content blend higher, expected.Blends 60% volume had their IP increased 1.5 (lard) times (palm kernel), compared one.At level, was found 8 h except for which 80% required.CFPP observed °C lower containing up all biodiesel, one, a 20% must not be surpassed.Palm kernel reached Brazilian specification, that is, higher than 12 CFPP 5 °C.