Potential of Microalgae Scenedesmus obliquus Grown in Brewery Wastewater for Biodiesel Production

This work aims to analyze the possibility of growing microalgae Scenedesmus obliquus (S.obliquus) in a brewery wastewater as a potential candidate Fish Oils for biodiesel production.For this purpose S.obliquus was cultivated in a synthetic brewery wastewater at 12,000 Lux of light intensity, with a 12 h period of daily light and aeration.

Under these conditions, results revealed an average lipid content of 27 % of dry-weight (dwt) biomass and average biomass and lipid concentrations of respectively, 0.90 and 0.24 g/L (of dwt biomass).The fatty acid methyl esters (FAME) transesterified from the lipids are mainly composed of saturated esters (56.

4 %) among which, palmitate (C16:0) is the most significant with a relative percentage of 47.8 % (wt).With regard to Umbrella the unsaturated esters, the percentage of 10.6 % (wt) obtained for linolenate (C18:3) is below the maximum limit imposed by the EN 14214:2003 standard for this ester in biodiesel.

The average molecular mass of these lipids and FAME are respectively 845.2 and 283.1 g/mol.

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