Ekonomik mikroalgal lipid üretiminin optimizasyonu ve biyoyakıt potansiyelinin incelenmesi

Fossil fuels are approaching the point of depletion. Therefore, the interest in renewable energy sources is increasing. Biofuels produced from various biological sources are popular energy alternatives. Biodiesel production from microalgae has been an interesting field of study. In this study, lipid production was carried out under different nutritional and environmental conditions using a green algae, Haematococcus pluvialis, and a blue-green algae, Spirulina platensis. H. pluvialis had the highest lipid production in mixotrophic medium containing two point five millimolar crude glycerol and twelve times higher production was achieved than in photoautotrophic medium. S. platensis produced the highest lipid production in medium containing ten millimolar crude glycerol, with approximately nineteen percent more production than in photoautotrophic medium. The fatty acid profile of the produced lipid was determined by gas chromatography and its biodiesel potential was investigated. The lipid produced is in compliance with European and American standards in terms of parameters such as iodine value, cetane number and oxidation stability, which are indicators of fuel quality. Evaluation of waste in obtaining value-added products emphasizes the economic and ecological aspects of the study. The residue formed at the end of lipid extraction from the cell has the potential to be utilized in different areas due to its protein and carbohydrate content. This approach also supports zero waste studies. Additionaly, the potential of two different microalgae species, which have not been adequately studied in terms of biodiesel production, has been revealed in terms of quality biodiesel production.