Effect of Media on Algae Growth for Bio-Fuel Production
Bio-fuels are commonly produced from oleaginous crops, such as rapeseed, soybean, sunflower and oil palm. However, microalgae can be an attractive alternative feedstock for future biofuels because some of the species contain very high amounts of oil, which can be used to extract and be processed into transportation fuels. Their growth rate is very high and faster, can be cultivated in non-agricultural land and waste water. In addition, production of microalgae is not seasonal and they can be harvested routinely as needed. Two strains of Scenedesmus dimorphus (fresh water microalgae) were tested for their growth in proteose medium and Modified Bold 3N medium with different levels of nitrogen and glycerol and growth rates were measured using cell count, fresh and dry weight. The growth of S. dimorphus was better in proteose medium with half of the nitrogen source recommended by the UTEX) than other media tested. ANOVA table showed significant differences between days, between media, and day × media interaction. When compared to dry weight of S. dimorphus in all media, the growth was better in proteose medium with 10 mL/L glycerol.
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