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Biodiesel from rapeseed oil, methanol and KOH. 3. Analysis of composition of actual reaction mixture
Author(s) -
Komers Karel,
Stloukal Radek,
Machek Jaroslav,
Skopal František
Publication year - 2001
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/1438-9312(200106)103:6<363::aid-ejlt363>3.0.co;2-3
Subject(s) - rapeseed , biodiesel , methanol , chemistry , dilution , catalysis , biodiesel production , organic chemistry , glycerol , potentiometric titration , transesterification , titration , chromatography , potassium , composition (language) , food science , ion , linguistics , physics , philosophy , thermodynamics
Detailed analysis is described of the samples taken after suitable reaction times from the actual reaction mixture during the production of biodiesel fuel using methanolysis of rapeseed oil catalyzed by KOH. Three methods for stoppage of reaction (neutralisation of catalyst, dilution by two suitable solvents) in the sample are used. The contents of mono‐, di‐ and triacylglycerols, methylesters of fatty acids (biodiesel) and potassium salts of fatty acids of rapeseed oil, glycerol (by HPLC method), basicity (by potentiometric titration) and water (by GC and Karl‐Fischer method) in the samples are determined. An example of these determinations is described.