Analysis of direct mono, di, triacylglyceride into biodiesel by high resolution gas chromatography: the resolution ANP 42 and its extensions / Análise direta de mono, di e triacilglicerídeos em biodiesel por cromatografia gasosa de alta resolução: resolução ANP 42 e suas extensões




Biodiesel is chemically defined as fatty acid mono-alkyl esters derived of vegetable oils, animal fats or discarded greases. The process more commonly employed for biodiesel production is transesterification catalyzed by base. The quality control of the produced biodiesel is essential for its use as fuel. The National Agency of Petroleum (ANP) establishes different methods and specifications for the analysis of biodiesel. The proposed technique for determination of free and bonded glycerol is gas chromatography. This study presents the results of two reactions of transesterification of the soy oil: catalyzed by acid and catalyzed by base. The results were evaluated by high resolution gas chromatography, which demonstrated better results when basic catalysis was employed. A methodology for mono, di and triacylglicerides was also developed in this dissertation, as an extension of the resolution ANP 42. The developed methodology presented excellent results for bonded glycerol analyses in samples of oils and biodiesel.


biodiesel biodiesel acilglycerides hrgc (high resolution gas chromatography) hrgc (cromatografia gasosa de alta resolução) acilglicerídeos

Documentos Relacionados