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. 2013 Jul 4;11(7):2365-81.
doi: 10.3390/md11072365.

Assessment of chemical and physico-chemical properties of cyanobacterial lipids for biodiesel production

Patrícia C M Da Rós  1 , Caroline S P Silva, Maria E Silva-Stenico, Marli F Fiore, Heizir F De Castro
Affiliations

Assessment of chemical and physico-chemical properties of cyanobacterial lipids for biodiesel production

Patrícia C M Da Rós et al. Mar Drugs. .

Abstract

Five non-toxin producing cyanobacterial isolates from the genera Synechococcus, Trichormus, Microcystis, Leptolyngbya and Chlorogloea were examined in terms of quantity and quality as lipid feedstock for biofuel production. Under the conditions used in this study, the biomass productivity ranged from 3.7 to 52.7 mg·L-1·day-1 in relation to dry biomass, while the lipid productivity varied between 0.8 and 14.2 mg·L-1·day-1. All cyanobacterial strains evaluated yielded lipids with similar fatty acid composition to those present in the seed oils successfully used for biodiesel synthesis. However, by combining biomass and lipid productivity parameters, the greatest potential was found for Synechococcus sp. PCC7942, M. aeruginosa NPCD-1 and Trichormus sp. CENA77. The chosen lipid samples were further characterized using Fourier Transform Infrared spectroscopy (FTIR), viscosity and thermogravimetry and used as lipid feedstock for biodiesel synthesis by heterogeneous catalysis.

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Figures

Figure 1
Figure 1
Absolute viscosity as function of shear rate for cyanobacterial lipid from M. aeruginosa NPCD-1 (a), Trichormus sp. CENA77 (b) and Synechococcus sp. PCC7942 (c).
Figure 2
Figure 2
Thermal study (TGA) for cyanobacterial lipid from M. aeruginosa NPCD-1 (a), Trichormus sp. CENA77 (b) and Synechococcus sp. PCC7942 (c).
Figure 3
Figure 3
Infrared spectra for cyanobacterial lipid from M. aeruginosa NPCD-1 (a), Trichormus sp. CENA77 (b) and Synechococcus sp. PCC7942 (c).
Figure 4
Figure 4
1H NMR spectra for purified biodiesel from M. aeruginosa NPCD-1 (a), Synechococcus sp. PCC7942 (b) and Trichormus sp. CENA77 (c).
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