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. 2015 May;22(3):332-9.
doi: 10.1016/j.sjbs.2014.11.017. Epub 2014 Nov 24.

Synthesis, spectroscopic and chromatographic studies of sunflower oil biodiesel using optimized base catalyzed methanolysis

Rizwana Naureen  1 , Muhammad Tariq  2 , Ismail Yusoff  1 , Ahmed Jalal Khan Chowdhury  3 , Muhammad Aqeel Ashraf  1
Affiliations

Synthesis, spectroscopic and chromatographic studies of sunflower oil biodiesel using optimized base catalyzed methanolysis

Rizwana Naureen et al. Saudi J Biol Sci. 2015 May.

Abstract

Methyl esters from vegetable oils have attracted a great deal of interest as substitute for petrodiesel to reduce dependence on imported petroleum and provide an alternate and sustainable source for fuel with more benign environmental properties. In the present study biodiesel was prepared from sunflower seed oil by transesterification by alkali-catalyzed methanolysis. The fuel properties of sunflower oil biodiesel were determined and discussed in the light of ASTM D6751 standards for biodiesel. The sunflower oil biodiesel was chemically characterized with analytical techniques like FT-IR, and NMR ((1)H and (13)C). The chemical composition of sunflower oil biodiesel was determined by GC-MS. Various fatty acid methyl esters (FAMEs) were identified by retention time data and verified by mass fragmentation patterns. The percentage conversion of triglycerides to the corresponding methyl esters determined by (1)H NMR was 87.33% which was quite in good agreement with the practically observed yield of 85.1%.

Keywords: Mass fragmentation; Methanolysis; Retention time; Sunflower; Transesterification.

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Figures

Fig. 1
Fig. 1
FT-IR spectrum of triglycerides in Helianthus annuus oil.
Fig. 2
Fig. 2
FT-IR spectrum of methyl esters in Helianthus annuus oil biodiesel.
Fig. 3
Fig. 3
1H NMR spectrum of sunflower biodiesel B100.
Fig. 4
Fig. 4
Total ion chromatogram of sunflower biodiesel showing composition of fatty acid methyl ester.
None
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